/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_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:09:11,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:09:11,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:09:11,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:09:11,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:09:11,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:09:11,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:09:11,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:09:11,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:09:11,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:09:11,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:09:11,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:09:11,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:09:11,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:09:11,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:09:11,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:09:11,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:09:12,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:09:12,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:09:12,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:09:12,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:09:12,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:09:12,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:09:12,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:09:12,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:09:12,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:09:12,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:09:12,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:09:12,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:09:12,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:09:12,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:09:12,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:09:12,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:09:12,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:09:12,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:09:12,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:09:12,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:09:12,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:09:12,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:09:12,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:09:12,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:09:12,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:09:12,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:09:12,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:09:12,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:09:12,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:09:12,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:09:12,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:09:12,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:09:12,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:09:12,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:09:12,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:09:12,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:09:12,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:09:12,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:09:12,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:09:12,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:09:12,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:09:12,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:09:12,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:09:12,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:09:12,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:09:12,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:09:12,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:09:12,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:09:12,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:09:12,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:09:12,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:09:12,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:09:12,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:09:12,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:09:12,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:09:12,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:09:12,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:09:12,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:09:12,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:09:12,644 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:09:12,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-28 00:09:12,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78292924c/6d6e6d8145054520a7cb5fdc8849eebb/FLAG3a99e7050 [2020-10-28 00:09:13,489 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:09:13,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-28 00:09:13,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78292924c/6d6e6d8145054520a7cb5fdc8849eebb/FLAG3a99e7050 [2020-10-28 00:09:13,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78292924c/6d6e6d8145054520a7cb5fdc8849eebb [2020-10-28 00:09:13,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:09:13,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:09:13,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:09:13,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:09:13,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:09:13,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:09:13" (1/1) ... [2020-10-28 00:09:13,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e04a4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:13, skipping insertion in model container [2020-10-28 00:09:13,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:09:13" (1/1) ... [2020-10-28 00:09:13,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:09:13,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:09:14,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:09:14,348 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:09:14,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:09:14,819 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:09:14,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14 WrapperNode [2020-10-28 00:09:14,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:09:14,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:09:14,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:09:14,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:09:14,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... [2020-10-28 00:09:14,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... [2020-10-28 00:09:14,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... [2020-10-28 00:09:14,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... [2020-10-28 00:09:14,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... [2020-10-28 00:09:14,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... [2020-10-28 00:09:14,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... [2020-10-28 00:09:14,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:09:14,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:09:14,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:09:14,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:09:14,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:09:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:09:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:09:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:09:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:09:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:09:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:09:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:09:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:09:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:09:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:09:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:09:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:09:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:09:17,073 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:09:17,073 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:09:17,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:09:17 BoogieIcfgContainer [2020-10-28 00:09:17,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:09:17,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:09:17,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:09:17,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:09:17,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:09:13" (1/3) ... [2020-10-28 00:09:17,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d0fd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:09:17, skipping insertion in model container [2020-10-28 00:09:17,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:09:14" (2/3) ... [2020-10-28 00:09:17,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d0fd17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:09:17, skipping insertion in model container [2020-10-28 00:09:17,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:09:17" (3/3) ... [2020-10-28 00:09:17,085 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-28 00:09:17,099 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:09:17,105 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:09:17,120 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:09:17,153 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:09:17,153 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:09:17,153 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:09:17,153 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:09:17,153 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:09:17,153 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:09:17,154 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:09:17,154 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:09:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states. [2020-10-28 00:09:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 00:09:17,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:17,204 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] [2020-10-28 00:09:17,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:17,211 INFO L82 PathProgramCache]: Analyzing trace with hash -502581709, now seen corresponding path program 1 times [2020-10-28 00:09:17,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:17,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399711249] [2020-10-28 00:09:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:19,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:19,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:22,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:22,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 00:09:22,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:09:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 00:09:22,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:09:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 00:09:22,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:09:22,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:09:23,115 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:09:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:23,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:23,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:23,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:09:23,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:23,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:23,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:23,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399711249] [2020-10-28 00:09:23,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:23,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:09:23,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607918281] [2020-10-28 00:09:23,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:09:23,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:23,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:09:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:09:23,227 INFO L87 Difference]: Start difference. First operand 433 states. Second operand 5 states. [2020-10-28 00:09:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:25,688 INFO L93 Difference]: Finished difference Result 681 states and 1098 transitions. [2020-10-28 00:09:25,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:09:25,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-28 00:09:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:25,707 INFO L225 Difference]: With dead ends: 681 [2020-10-28 00:09:25,707 INFO L226 Difference]: Without dead ends: 426 [2020-10-28 00:09:25,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:09:25,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-28 00:09:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2020-10-28 00:09:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-28 00:09:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 683 transitions. [2020-10-28 00:09:25,821 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 683 transitions. Word has length 112 [2020-10-28 00:09:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:25,825 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 683 transitions. [2020-10-28 00:09:25,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:09:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 683 transitions. [2020-10-28 00:09:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 00:09:25,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:25,835 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] [2020-10-28 00:09:25,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:09:25,835 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:25,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1512004026, now seen corresponding path program 1 times [2020-10-28 00:09:25,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:25,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982062931] [2020-10-28 00:09:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:26,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:26,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:30,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:30,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 00:09:30,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:09:30,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:09:30,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:09:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 00:09:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:09:30,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:09:31,281 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:09:31,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:31,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:31,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:31,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:31,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:09:31,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:31,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982062931] [2020-10-28 00:09:31,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:31,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:09:31,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290276165] [2020-10-28 00:09:31,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:09:31,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:31,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:09:31,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:09:31,374 INFO L87 Difference]: Start difference. First operand 426 states and 683 transitions. Second operand 4 states. [2020-10-28 00:09:31,722 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:09:33,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:33,857 INFO L93 Difference]: Finished difference Result 977 states and 1553 transitions. [2020-10-28 00:09:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:09:33,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-28 00:09:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:33,865 INFO L225 Difference]: With dead ends: 977 [2020-10-28 00:09:33,865 INFO L226 Difference]: Without dead ends: 728 [2020-10-28 00:09:33,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:09:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-28 00:09:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 681. [2020-10-28 00:09:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-28 00:09:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1084 transitions. [2020-10-28 00:09:33,923 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1084 transitions. Word has length 113 [2020-10-28 00:09:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:33,924 INFO L481 AbstractCegarLoop]: Abstraction has 681 states and 1084 transitions. [2020-10-28 00:09:33,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:09:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1084 transitions. [2020-10-28 00:09:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 00:09:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:33,929 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] [2020-10-28 00:09:33,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:09:33,929 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash -991845782, now seen corresponding path program 1 times [2020-10-28 00:09:33,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:33,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373541777] [2020-10-28 00:09:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:34,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:38,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:38,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 00:09:38,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:09:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:09:38,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:09:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 00:09:38,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:09:38,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:39,298 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:09:39,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:39,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:39,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:09:39,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:39,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:39,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:39,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373541777] [2020-10-28 00:09:39,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:39,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:09:39,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155739175] [2020-10-28 00:09:39,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:09:39,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:39,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:09:39,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:09:39,362 INFO L87 Difference]: Start difference. First operand 681 states and 1084 transitions. Second operand 5 states. [2020-10-28 00:09:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:41,240 INFO L93 Difference]: Finished difference Result 970 states and 1540 transitions. [2020-10-28 00:09:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:09:41,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-28 00:09:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:41,248 INFO L225 Difference]: With dead ends: 970 [2020-10-28 00:09:41,248 INFO L226 Difference]: Without dead ends: 681 [2020-10-28 00:09:41,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:09:41,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-10-28 00:09:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2020-10-28 00:09:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-28 00:09:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1080 transitions. [2020-10-28 00:09:41,317 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1080 transitions. Word has length 115 [2020-10-28 00:09:41,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:41,319 INFO L481 AbstractCegarLoop]: Abstraction has 681 states and 1080 transitions. [2020-10-28 00:09:41,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:09:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1080 transitions. [2020-10-28 00:09:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 00:09:41,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:41,325 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] [2020-10-28 00:09:41,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:09:41,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1584022441, now seen corresponding path program 1 times [2020-10-28 00:09:41,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:41,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268885766] [2020-10-28 00:09:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:41,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:46,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:46,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 00:09:46,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:09:46,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:09:46,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:09:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 00:09:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:09:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:09:46,774 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:09:46,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:46,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:46,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:46,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:09:46,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:09:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:46,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268885766] [2020-10-28 00:09:46,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:46,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:09:46,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394116310] [2020-10-28 00:09:46,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:09:46,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:46,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:09:46,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:09:46,860 INFO L87 Difference]: Start difference. First operand 681 states and 1080 transitions. Second operand 4 states. [2020-10-28 00:09:47,188 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:09:49,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:49,396 INFO L93 Difference]: Finished difference Result 1811 states and 2853 transitions. [2020-10-28 00:09:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:09:49,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-28 00:09:49,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:49,405 INFO L225 Difference]: With dead ends: 1811 [2020-10-28 00:09:49,405 INFO L226 Difference]: Without dead ends: 1272 [2020-10-28 00:09:49,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:09:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-10-28 00:09:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1181. [2020-10-28 00:09:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-10-28 00:09:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1857 transitions. [2020-10-28 00:09:49,479 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1857 transitions. Word has length 116 [2020-10-28 00:09:49,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:49,479 INFO L481 AbstractCegarLoop]: Abstraction has 1181 states and 1857 transitions. [2020-10-28 00:09:49,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:09:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1857 transitions. [2020-10-28 00:09:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 00:09:49,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:49,484 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, 1] [2020-10-28 00:09:49,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:09:49,485 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:49,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:49,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1894268773, now seen corresponding path program 1 times [2020-10-28 00:09:49,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:49,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37559981] [2020-10-28 00:09:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:49,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:54,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:54,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 00:09:54,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:09:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:09:54,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:09:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 00:09:54,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:09:54,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:54,891 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:09:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:09:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:54,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:09:54,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:09:54,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:09:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 00:09:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:09:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:09:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:09:54,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:09:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:09:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:09:54,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37559981] [2020-10-28 00:09:54,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:09:54,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:09:54,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319922240] [2020-10-28 00:09:54,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:09:54,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:09:54,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:09:54,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:09:54,993 INFO L87 Difference]: Start difference. First operand 1181 states and 1857 transitions. Second operand 4 states. [2020-10-28 00:09:55,403 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:09:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:57,508 INFO L93 Difference]: Finished difference Result 2995 states and 4673 transitions. [2020-10-28 00:09:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:09:57,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-28 00:09:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:57,525 INFO L225 Difference]: With dead ends: 2995 [2020-10-28 00:09:57,525 INFO L226 Difference]: Without dead ends: 2160 [2020-10-28 00:09:57,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:09:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2020-10-28 00:09:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 1981. [2020-10-28 00:09:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-10-28 00:09:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3079 transitions. [2020-10-28 00:09:57,653 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3079 transitions. Word has length 118 [2020-10-28 00:09:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:09:57,653 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3079 transitions. [2020-10-28 00:09:57,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:09:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3079 transitions. [2020-10-28 00:09:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 00:09:57,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:09:57,663 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, 1, 1, 1] [2020-10-28 00:09:57,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:09:57,663 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:09:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:09:57,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1989582079, now seen corresponding path program 1 times [2020-10-28 00:09:57,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:09:57,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014797591] [2020-10-28 00:09:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:09:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:09:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:57,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:57,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:57,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:09:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:02,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:02,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 00:10:02,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:10:02,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:10:02,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:02,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:10:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 00:10:02,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:10:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:03,077 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:03,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:03,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:03,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:10:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:03,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014797591] [2020-10-28 00:10:03,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:03,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:10:03,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468218938] [2020-10-28 00:10:03,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:10:03,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:10:03,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:03,142 INFO L87 Difference]: Start difference. First operand 1981 states and 3079 transitions. Second operand 5 states. [2020-10-28 00:10:05,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:05,186 INFO L93 Difference]: Finished difference Result 2440 states and 3789 transitions. [2020-10-28 00:10:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:10:05,188 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-28 00:10:05,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:05,201 INFO L225 Difference]: With dead ends: 2440 [2020-10-28 00:10:05,201 INFO L226 Difference]: Without dead ends: 1981 [2020-10-28 00:10:05,203 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 [2020-10-28 00:10:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-28 00:10:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1981. [2020-10-28 00:10:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-10-28 00:10:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3063 transitions. [2020-10-28 00:10:05,309 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3063 transitions. Word has length 120 [2020-10-28 00:10:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:05,310 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3063 transitions. [2020-10-28 00:10:05,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:10:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3063 transitions. [2020-10-28 00:10:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 00:10:05,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:05,317 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, 1, 1, 1, 1] [2020-10-28 00:10:05,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:10:05,317 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:05,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash -680960650, now seen corresponding path program 1 times [2020-10-28 00:10:05,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:05,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255065168] [2020-10-28 00:10:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:10,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:10,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 00:10:10,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:10:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 00:10:10,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:10:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 00:10:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:10:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:10,742 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:10,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:10,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:10,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:10,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:10:10,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:10,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:10,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:10,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:10,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255065168] [2020-10-28 00:10:10,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:10,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:10:10,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265728626] [2020-10-28 00:10:10,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:10:10,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:10,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:10:10,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:10:10,837 INFO L87 Difference]: Start difference. First operand 1981 states and 3063 transitions. Second operand 4 states. [2020-10-28 00:10:11,233 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:10:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:13,850 INFO L93 Difference]: Finished difference Result 5271 states and 8085 transitions. [2020-10-28 00:10:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:10:13,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-28 00:10:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:13,871 INFO L225 Difference]: With dead ends: 5271 [2020-10-28 00:10:13,871 INFO L226 Difference]: Without dead ends: 3716 [2020-10-28 00:10:13,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2020-10-28 00:10:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3361. [2020-10-28 00:10:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3361 states. [2020-10-28 00:10:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3361 states to 3361 states and 5117 transitions. [2020-10-28 00:10:14,067 INFO L78 Accepts]: Start accepts. Automaton has 3361 states and 5117 transitions. Word has length 121 [2020-10-28 00:10:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:14,067 INFO L481 AbstractCegarLoop]: Abstraction has 3361 states and 5117 transitions. [2020-10-28 00:10:14,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:10:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3361 states and 5117 transitions. [2020-10-28 00:10:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 00:10:14,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:14,078 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:14,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:10:14,078 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash -338560672, now seen corresponding path program 1 times [2020-10-28 00:10:14,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:14,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584625310] [2020-10-28 00:10:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:14,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:14,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:15,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:15,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 00:10:15,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:10:15,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1502 [2020-10-28 00:10:15,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:10:15,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 00:10:15,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:10:15,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:15,885 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:15,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:15,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:15,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:15,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:10:15,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:15,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:15,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:15,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584625310] [2020-10-28 00:10:15,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:15,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:10:15,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983215593] [2020-10-28 00:10:15,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:10:15,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:15,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:10:15,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:10:15,948 INFO L87 Difference]: Start difference. First operand 3361 states and 5117 transitions. Second operand 4 states. [2020-10-28 00:10:16,236 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 00:10:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:18,613 INFO L93 Difference]: Finished difference Result 6313 states and 9593 transitions. [2020-10-28 00:10:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:10:18,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-28 00:10:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:18,642 INFO L225 Difference]: With dead ends: 6313 [2020-10-28 00:10:18,642 INFO L226 Difference]: Without dead ends: 5558 [2020-10-28 00:10:18,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:18,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2020-10-28 00:10:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 4081. [2020-10-28 00:10:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4081 states. [2020-10-28 00:10:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6205 transitions. [2020-10-28 00:10:18,899 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6205 transitions. Word has length 123 [2020-10-28 00:10:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:18,899 INFO L481 AbstractCegarLoop]: Abstraction has 4081 states and 6205 transitions. [2020-10-28 00:10:18,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:10:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6205 transitions. [2020-10-28 00:10:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:10:18,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:18,911 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:18,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:10:18,912 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1813928525, now seen corresponding path program 1 times [2020-10-28 00:10:18,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:18,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912477226] [2020-10-28 00:10:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:19,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1908 [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:10:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:21,153 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:21,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:21,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:10:21,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:21,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912477226] [2020-10-28 00:10:21,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:21,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:10:21,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685306981] [2020-10-28 00:10:21,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:10:21,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:21,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:10:21,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:21,199 INFO L87 Difference]: Start difference. First operand 4081 states and 6205 transitions. Second operand 5 states. [2020-10-28 00:10:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:23,596 INFO L93 Difference]: Finished difference Result 5268 states and 7993 transitions. [2020-10-28 00:10:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:10:23,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-28 00:10:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:23,624 INFO L225 Difference]: With dead ends: 5268 [2020-10-28 00:10:23,624 INFO L226 Difference]: Without dead ends: 5265 [2020-10-28 00:10:23,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:10:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5265 states. [2020-10-28 00:10:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5265 to 4113. [2020-10-28 00:10:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4113 states. [2020-10-28 00:10:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 6237 transitions. [2020-10-28 00:10:23,893 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 6237 transitions. Word has length 124 [2020-10-28 00:10:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:23,893 INFO L481 AbstractCegarLoop]: Abstraction has 4113 states and 6237 transitions. [2020-10-28 00:10:23,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:10:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 6237 transitions. [2020-10-28 00:10:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 00:10:23,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:23,905 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:23,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:10:23,905 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:23,906 INFO L82 PathProgramCache]: Analyzing trace with hash 694344241, now seen corresponding path program 1 times [2020-10-28 00:10:23,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:23,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740078257] [2020-10-28 00:10:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:23,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:24,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:25,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:25,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 00:10:25,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:10:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-28 00:10:25,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:10:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:10:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:10:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:25,280 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:25,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:25,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:25,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:25,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:10:25,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:25,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740078257] [2020-10-28 00:10:25,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:25,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:10:25,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653694253] [2020-10-28 00:10:25,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:10:25,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:25,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:10:25,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:10:25,332 INFO L87 Difference]: Start difference. First operand 4113 states and 6237 transitions. Second operand 4 states. [2020-10-28 00:10:27,658 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-28 00:10:28,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:28,022 INFO L93 Difference]: Finished difference Result 8248 states and 12460 transitions. [2020-10-28 00:10:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:10:28,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-28 00:10:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:28,047 INFO L225 Difference]: With dead ends: 8248 [2020-10-28 00:10:28,047 INFO L226 Difference]: Without dead ends: 4961 [2020-10-28 00:10:28,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4961 states. [2020-10-28 00:10:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4961 to 4958. [2020-10-28 00:10:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4958 states. [2020-10-28 00:10:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4958 states to 4958 states and 7454 transitions. [2020-10-28 00:10:28,317 INFO L78 Accepts]: Start accepts. Automaton has 4958 states and 7454 transitions. Word has length 125 [2020-10-28 00:10:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:28,318 INFO L481 AbstractCegarLoop]: Abstraction has 4958 states and 7454 transitions. [2020-10-28 00:10:28,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:10:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4958 states and 7454 transitions. [2020-10-28 00:10:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 00:10:28,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:28,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:28,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:10:28,330 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:28,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:28,331 INFO L82 PathProgramCache]: Analyzing trace with hash -517893896, now seen corresponding path program 1 times [2020-10-28 00:10:28,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:28,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780987971] [2020-10-28 00:10:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:28,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:28,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 00:10:28,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-28 00:10:28,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:10:28,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:10:28,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:10:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:28,861 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:28,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:28,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:28,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:28,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:10:28,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:28,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:28,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:28,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780987971] [2020-10-28 00:10:28,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:28,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:10:28,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412558839] [2020-10-28 00:10:28,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:10:28,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:28,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:10:28,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:28,905 INFO L87 Difference]: Start difference. First operand 4958 states and 7454 transitions. Second operand 5 states. [2020-10-28 00:10:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:31,016 INFO L93 Difference]: Finished difference Result 9886 states and 14854 transitions. [2020-10-28 00:10:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:10:31,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-28 00:10:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:31,032 INFO L225 Difference]: With dead ends: 9886 [2020-10-28 00:10:31,032 INFO L226 Difference]: Without dead ends: 4958 [2020-10-28 00:10:31,045 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 [2020-10-28 00:10:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2020-10-28 00:10:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4958. [2020-10-28 00:10:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4958 states. [2020-10-28 00:10:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4958 states to 4958 states and 7430 transitions. [2020-10-28 00:10:31,260 INFO L78 Accepts]: Start accepts. Automaton has 4958 states and 7430 transitions. Word has length 126 [2020-10-28 00:10:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:31,260 INFO L481 AbstractCegarLoop]: Abstraction has 4958 states and 7430 transitions. [2020-10-28 00:10:31,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:10:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4958 states and 7430 transitions. [2020-10-28 00:10:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 00:10:31,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:31,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:31,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:10:31,273 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:31,274 INFO L82 PathProgramCache]: Analyzing trace with hash -858005730, now seen corresponding path program 1 times [2020-10-28 00:10:31,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:31,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31085462] [2020-10-28 00:10:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:31,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:31,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:31,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:32,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:33,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:10:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:36,608 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:36,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:10:36,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:36,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31085462] [2020-10-28 00:10:36,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:36,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:10:36,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285941456] [2020-10-28 00:10:36,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:10:36,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:36,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:10:36,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:10:36,652 INFO L87 Difference]: Start difference. First operand 4958 states and 7430 transitions. Second operand 4 states. [2020-10-28 00:10:36,957 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:10:39,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:39,045 INFO L93 Difference]: Finished difference Result 8205 states and 12305 transitions. [2020-10-28 00:10:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:10:39,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-28 00:10:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:39,065 INFO L225 Difference]: With dead ends: 8205 [2020-10-28 00:10:39,065 INFO L226 Difference]: Without dead ends: 4461 [2020-10-28 00:10:39,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4461 states. [2020-10-28 00:10:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4461 to 4458. [2020-10-28 00:10:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4458 states. [2020-10-28 00:10:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 6680 transitions. [2020-10-28 00:10:39,272 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 6680 transitions. Word has length 149 [2020-10-28 00:10:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:39,273 INFO L481 AbstractCegarLoop]: Abstraction has 4458 states and 6680 transitions. [2020-10-28 00:10:39,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:10:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 6680 transitions. [2020-10-28 00:10:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 00:10:39,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:39,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:39,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:10:39,284 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1550201746, now seen corresponding path program 1 times [2020-10-28 00:10:39,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:39,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477624887] [2020-10-28 00:10:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:40,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:42,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:44,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:44,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 00:10:44,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-28 00:10:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 00:10:44,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:10:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 00:10:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:10:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:44,646 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:44,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:44,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:44,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:44,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:44,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:10:44,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:44,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477624887] [2020-10-28 00:10:44,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:44,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:10:44,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772974427] [2020-10-28 00:10:44,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:10:44,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:44,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:10:44,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:10:44,689 INFO L87 Difference]: Start difference. First operand 4458 states and 6680 transitions. Second operand 4 states. [2020-10-28 00:10:46,836 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:10:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:47,212 INFO L93 Difference]: Finished difference Result 6833 states and 10259 transitions. [2020-10-28 00:10:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:10:47,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-28 00:10:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:47,220 INFO L225 Difference]: With dead ends: 6833 [2020-10-28 00:10:47,220 INFO L226 Difference]: Without dead ends: 3589 [2020-10-28 00:10:47,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2020-10-28 00:10:47,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3586. [2020-10-28 00:10:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3586 states. [2020-10-28 00:10:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5345 transitions. [2020-10-28 00:10:47,438 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5345 transitions. Word has length 150 [2020-10-28 00:10:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:47,438 INFO L481 AbstractCegarLoop]: Abstraction has 3586 states and 5345 transitions. [2020-10-28 00:10:47,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:10:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5345 transitions. [2020-10-28 00:10:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 00:10:47,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:47,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:47,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:10:47,445 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:47,446 INFO L82 PathProgramCache]: Analyzing trace with hash 536627794, now seen corresponding path program 1 times [2020-10-28 00:10:47,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:47,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582756297] [2020-10-28 00:10:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:52,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:52,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 00:10:52,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 00:10:52,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:10:52,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:10:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 00:10:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:10:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:52,786 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:10:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:10:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:52,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:10:52,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:10:52,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:10:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:10:52,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:10:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:10:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:10:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:10:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:10:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:10:52,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582756297] [2020-10-28 00:10:52,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:10:52,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:10:52,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052615923] [2020-10-28 00:10:52,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:10:52,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:10:52,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:10:52,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:10:52,825 INFO L87 Difference]: Start difference. First operand 3586 states and 5345 transitions. Second operand 4 states. [2020-10-28 00:10:53,146 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:10:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:10:55,171 INFO L93 Difference]: Finished difference Result 6293 states and 9381 transitions. [2020-10-28 00:10:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:10:55,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-28 00:10:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:10:55,180 INFO L225 Difference]: With dead ends: 6293 [2020-10-28 00:10:55,181 INFO L226 Difference]: Without dead ends: 3309 [2020-10-28 00:10:55,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:10:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2020-10-28 00:10:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 3306. [2020-10-28 00:10:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3306 states. [2020-10-28 00:10:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 4921 transitions. [2020-10-28 00:10:55,400 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 4921 transitions. Word has length 150 [2020-10-28 00:10:55,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:10:55,400 INFO L481 AbstractCegarLoop]: Abstraction has 3306 states and 4921 transitions. [2020-10-28 00:10:55,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:10:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 4921 transitions. [2020-10-28 00:10:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 00:10:55,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:10:55,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:10:55,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:10:55,406 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:10:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:10:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash -618444257, now seen corresponding path program 1 times [2020-10-28 00:10:55,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:10:55,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892673434] [2020-10-28 00:10:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:10:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:10:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:55,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:55,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:10:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:00,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:00,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 00:11:00,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-28 00:11:00,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:11:00,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:11:00,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 00:11:00,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:11:00,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:00,740 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:00,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:00,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892673434] [2020-10-28 00:11:00,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:00,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:11:00,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277760167] [2020-10-28 00:11:00,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:11:00,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:00,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:11:00,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:11:00,779 INFO L87 Difference]: Start difference. First operand 3306 states and 4921 transitions. Second operand 4 states. [2020-10-28 00:11:02,720 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:11:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:03,012 INFO L93 Difference]: Finished difference Result 4532 states and 6753 transitions. [2020-10-28 00:11:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:11:03,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-28 00:11:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:03,017 INFO L225 Difference]: With dead ends: 4532 [2020-10-28 00:11:03,017 INFO L226 Difference]: Without dead ends: 1828 [2020-10-28 00:11:03,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:11:03,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-10-28 00:11:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1825. [2020-10-28 00:11:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2020-10-28 00:11:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2694 transitions. [2020-10-28 00:11:03,153 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2694 transitions. Word has length 151 [2020-10-28 00:11:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:03,153 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2694 transitions. [2020-10-28 00:11:03,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:11:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2694 transitions. [2020-10-28 00:11:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 00:11:03,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:03,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:03,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:11:03,157 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 776753477, now seen corresponding path program 1 times [2020-10-28 00:11:03,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:03,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800008464] [2020-10-28 00:11:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:03,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:03,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:03,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:04,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:07,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:08,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:08,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 00:11:08,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-28 00:11:08,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:11:08,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:08,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:11:08,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 00:11:08,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:11:08,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:08,482 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:08,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:08,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:11:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:08,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800008464] [2020-10-28 00:11:08,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:08,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:11:08,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25804991] [2020-10-28 00:11:08,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:11:08,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:08,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:11:08,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:11:08,574 INFO L87 Difference]: Start difference. First operand 1825 states and 2694 transitions. Second operand 4 states. [2020-10-28 00:11:08,890 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:11:10,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:10,658 INFO L93 Difference]: Finished difference Result 3225 states and 4768 transitions. [2020-10-28 00:11:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:11:10,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-28 00:11:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:10,662 INFO L225 Difference]: With dead ends: 3225 [2020-10-28 00:11:10,662 INFO L226 Difference]: Without dead ends: 1702 [2020-10-28 00:11:10,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:11:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2020-10-28 00:11:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1699. [2020-10-28 00:11:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-10-28 00:11:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2506 transitions. [2020-10-28 00:11:10,777 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2506 transitions. Word has length 151 [2020-10-28 00:11:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:10,778 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2506 transitions. [2020-10-28 00:11:10,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:11:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2506 transitions. [2020-10-28 00:11:10,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 00:11:10,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:10,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:10,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:11:10,781 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:10,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1076270971, now seen corresponding path program 1 times [2020-10-28 00:11:10,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:10,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261111999] [2020-10-28 00:11:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:11,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:14,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:14,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:15,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:15,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:11:15,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:16,162 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:11:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:16,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:16,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261111999] [2020-10-28 00:11:16,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:16,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:11:16,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611648134] [2020-10-28 00:11:16,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:11:16,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:16,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:11:16,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:11:16,204 INFO L87 Difference]: Start difference. First operand 1699 states and 2506 transitions. Second operand 4 states. [2020-10-28 00:11:17,961 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:11:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:18,165 INFO L93 Difference]: Finished difference Result 2324 states and 3432 transitions. [2020-10-28 00:11:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:11:18,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 00:11:18,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:18,168 INFO L225 Difference]: With dead ends: 2324 [2020-10-28 00:11:18,168 INFO L226 Difference]: Without dead ends: 927 [2020-10-28 00:11:18,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:11:18,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-10-28 00:11:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 924. [2020-10-28 00:11:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-10-28 00:11:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1347 transitions. [2020-10-28 00:11:18,235 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1347 transitions. Word has length 152 [2020-10-28 00:11:18,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:18,236 INFO L481 AbstractCegarLoop]: Abstraction has 924 states and 1347 transitions. [2020-10-28 00:11:18,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:11:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1347 transitions. [2020-10-28 00:11:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 00:11:18,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:18,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:18,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:11:18,238 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:18,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1241190889, now seen corresponding path program 1 times [2020-10-28 00:11:18,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:18,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340388646] [2020-10-28 00:11:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:19,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:19,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:22,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:22,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:23,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 00:11:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-28 00:11:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:11:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:11:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 00:11:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:11:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:23,558 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:23,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:23,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:23,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:11:23,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:23,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340388646] [2020-10-28 00:11:23,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:23,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:11:23,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877270369] [2020-10-28 00:11:23,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:11:23,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:23,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:11:23,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:11:23,613 INFO L87 Difference]: Start difference. First operand 924 states and 1347 transitions. Second operand 4 states. [2020-10-28 00:11:23,938 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:11:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:25,565 INFO L93 Difference]: Finished difference Result 1640 states and 2401 transitions. [2020-10-28 00:11:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:11:25,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 00:11:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:25,567 INFO L225 Difference]: With dead ends: 1640 [2020-10-28 00:11:25,567 INFO L226 Difference]: Without dead ends: 871 [2020-10-28 00:11:25,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:11:25,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-10-28 00:11:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 868. [2020-10-28 00:11:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2020-10-28 00:11:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1265 transitions. [2020-10-28 00:11:25,613 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1265 transitions. Word has length 152 [2020-10-28 00:11:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:25,613 INFO L481 AbstractCegarLoop]: Abstraction has 868 states and 1265 transitions. [2020-10-28 00:11:25,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:11:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1265 transitions. [2020-10-28 00:11:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 00:11:25,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:25,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:25,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 00:11:25,615 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:25,616 INFO L82 PathProgramCache]: Analyzing trace with hash -496657102, now seen corresponding path program 1 times [2020-10-28 00:11:25,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:25,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110099485] [2020-10-28 00:11:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:25,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:25,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:27,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:28,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:29,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:29,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:30,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:30,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:30,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:11:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:30,990 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:31,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110099485] [2020-10-28 00:11:31,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:31,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:11:31,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868986914] [2020-10-28 00:11:31,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:11:31,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:31,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:11:31,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:11:31,030 INFO L87 Difference]: Start difference. First operand 868 states and 1265 transitions. Second operand 4 states. [2020-10-28 00:11:32,573 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:11:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:32,729 INFO L93 Difference]: Finished difference Result 1176 states and 1717 transitions. [2020-10-28 00:11:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:11:32,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-28 00:11:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:32,731 INFO L225 Difference]: With dead ends: 1176 [2020-10-28 00:11:32,731 INFO L226 Difference]: Without dead ends: 463 [2020-10-28 00:11:32,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:11:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-28 00:11:32,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 460. [2020-10-28 00:11:32,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-28 00:11:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 658 transitions. [2020-10-28 00:11:32,755 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 658 transitions. Word has length 153 [2020-10-28 00:11:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:32,756 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 658 transitions. [2020-10-28 00:11:32,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:11:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 658 transitions. [2020-10-28 00:11:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 00:11:32,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:32,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:32,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 00:11:32,757 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:32,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:32,757 INFO L82 PathProgramCache]: Analyzing trace with hash -336658128, now seen corresponding path program 1 times [2020-10-28 00:11:32,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:32,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035718797] [2020-10-28 00:11:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:32,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:32,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:33,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:33,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:37,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:37,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:37,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 00:11:37,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-28 00:11:37,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:11:37,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:37,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:11:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 00:11:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:11:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:38,107 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:38,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:38,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:38,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:38,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:38,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:11:38,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:38,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035718797] [2020-10-28 00:11:38,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:38,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:11:38,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604962187] [2020-10-28 00:11:38,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:11:38,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:38,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:11:38,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:11:38,145 INFO L87 Difference]: Start difference. First operand 460 states and 658 transitions. Second operand 4 states. [2020-10-28 00:11:38,449 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 00:11:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:39,762 INFO L93 Difference]: Finished difference Result 929 states and 1336 transitions. [2020-10-28 00:11:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:11:39,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-28 00:11:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:39,764 INFO L225 Difference]: With dead ends: 929 [2020-10-28 00:11:39,764 INFO L226 Difference]: Without dead ends: 585 [2020-10-28 00:11:39,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:11:39,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-10-28 00:11:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 576. [2020-10-28 00:11:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-28 00:11:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 820 transitions. [2020-10-28 00:11:39,792 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 820 transitions. Word has length 153 [2020-10-28 00:11:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:39,792 INFO L481 AbstractCegarLoop]: Abstraction has 576 states and 820 transitions. [2020-10-28 00:11:39,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:11:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 820 transitions. [2020-10-28 00:11:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 00:11:39,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:39,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:39,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 00:11:39,795 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash 669138029, now seen corresponding path program 1 times [2020-10-28 00:11:39,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:39,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833484936] [2020-10-28 00:11:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:39,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:40,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:41,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:41,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:43,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:44,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:44,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 00:11:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:45,179 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:45,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:11:45,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:45,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:45,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833484936] [2020-10-28 00:11:45,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:45,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:11:45,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24500313] [2020-10-28 00:11:45,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:11:45,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:45,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:11:45,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:11:45,236 INFO L87 Difference]: Start difference. First operand 576 states and 820 transitions. Second operand 7 states. [2020-10-28 00:11:45,601 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-28 00:11:47,479 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-28 00:11:47,781 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:11:48,092 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-28 00:11:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:48,290 INFO L93 Difference]: Finished difference Result 2576 states and 3707 transitions. [2020-10-28 00:11:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 00:11:48,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-28 00:11:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:48,293 INFO L225 Difference]: With dead ends: 2576 [2020-10-28 00:11:48,293 INFO L226 Difference]: Without dead ends: 2093 [2020-10-28 00:11:48,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-28 00:11:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2020-10-28 00:11:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 818. [2020-10-28 00:11:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-10-28 00:11:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1169 transitions. [2020-10-28 00:11:48,350 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1169 transitions. Word has length 154 [2020-10-28 00:11:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:48,350 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1169 transitions. [2020-10-28 00:11:48,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:11:48,350 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1169 transitions. [2020-10-28 00:11:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:11:48,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:48,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:48,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 00:11:48,352 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:48,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:48,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2060858807, now seen corresponding path program 1 times [2020-10-28 00:11:48,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:48,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630250504] [2020-10-28 00:11:48,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:48,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:51,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:53,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:53,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:11:53,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 00:11:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:11:53,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:11:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 00:11:53,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:11:53,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:53,691 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:11:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:11:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:53,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:11:53,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:11:53,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:11:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:11:53,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:11:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:11:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:11:53,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:11:53,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:11:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:11:53,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630250504] [2020-10-28 00:11:53,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:11:53,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:11:53,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737025044] [2020-10-28 00:11:53,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:11:53,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:11:53,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:11:53,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:11:53,731 INFO L87 Difference]: Start difference. First operand 818 states and 1169 transitions. Second operand 4 states. [2020-10-28 00:11:54,047 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:11:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:11:55,483 INFO L93 Difference]: Finished difference Result 2219 states and 3180 transitions. [2020-10-28 00:11:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:11:55,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 00:11:55,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:11:55,488 INFO L225 Difference]: With dead ends: 2219 [2020-10-28 00:11:55,488 INFO L226 Difference]: Without dead ends: 1494 [2020-10-28 00:11:55,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:11:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-10-28 00:11:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1491. [2020-10-28 00:11:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-10-28 00:11:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2114 transitions. [2020-10-28 00:11:55,602 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2114 transitions. Word has length 157 [2020-10-28 00:11:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:11:55,602 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2114 transitions. [2020-10-28 00:11:55,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:11:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2114 transitions. [2020-10-28 00:11:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:11:55,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:11:55,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:11:55,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 00:11:55,604 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:11:55,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:11:55,605 INFO L82 PathProgramCache]: Analyzing trace with hash 812511418, now seen corresponding path program 1 times [2020-10-28 00:11:55,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:11:55,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540795144] [2020-10-28 00:11:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:11:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:11:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:11:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:00,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:00,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:12:00,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 00:12:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:12:00,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:12:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 00:12:00,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:12:00,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:00,927 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:12:00,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:12:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:00,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:00,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:12:00,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:12:00,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:12:00,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:12:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:12:00,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:12:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:12:00,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540795144] [2020-10-28 00:12:00,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:12:00,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:12:00,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485556703] [2020-10-28 00:12:00,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:12:00,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:12:00,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:12:00,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:12:00,968 INFO L87 Difference]: Start difference. First operand 1491 states and 2114 transitions. Second operand 4 states. [2020-10-28 00:12:01,281 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:12:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:12:02,782 INFO L93 Difference]: Finished difference Result 4058 states and 5740 transitions. [2020-10-28 00:12:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:12:02,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 00:12:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:12:02,785 INFO L225 Difference]: With dead ends: 4058 [2020-10-28 00:12:02,785 INFO L226 Difference]: Without dead ends: 2726 [2020-10-28 00:12:02,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:12:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2020-10-28 00:12:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2723. [2020-10-28 00:12:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2723 states. [2020-10-28 00:12:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3806 transitions. [2020-10-28 00:12:02,960 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3806 transitions. Word has length 157 [2020-10-28 00:12:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:12:02,960 INFO L481 AbstractCegarLoop]: Abstraction has 2723 states and 3806 transitions. [2020-10-28 00:12:02,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:12:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3806 transitions. [2020-10-28 00:12:02,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:12:02,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:12:02,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:12:02,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 00:12:02,964 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:12:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:12:02,964 INFO L82 PathProgramCache]: Analyzing trace with hash -917892633, now seen corresponding path program 1 times [2020-10-28 00:12:02,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:12:02,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511991917] [2020-10-28 00:12:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:12:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:05,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:06,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:08,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:08,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:12:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 00:12:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:12:08,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:12:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 00:12:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:12:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:08,308 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:12:08,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:12:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:08,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:12:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:12:08,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511991917] [2020-10-28 00:12:08,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:12:08,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:12:08,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321492212] [2020-10-28 00:12:08,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:12:08,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:12:08,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:12:08,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:12:08,355 INFO L87 Difference]: Start difference. First operand 2723 states and 3806 transitions. Second operand 4 states. [2020-10-28 00:12:08,660 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-28 00:12:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:12:10,397 INFO L93 Difference]: Finished difference Result 7396 states and 10270 transitions. [2020-10-28 00:12:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:12:10,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 00:12:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:12:10,403 INFO L225 Difference]: With dead ends: 7396 [2020-10-28 00:12:10,404 INFO L226 Difference]: Without dead ends: 4962 [2020-10-28 00:12:10,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:12:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2020-10-28 00:12:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4959. [2020-10-28 00:12:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4959 states. [2020-10-28 00:12:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 6794 transitions. [2020-10-28 00:12:10,745 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 6794 transitions. Word has length 157 [2020-10-28 00:12:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:12:10,745 INFO L481 AbstractCegarLoop]: Abstraction has 4959 states and 6794 transitions. [2020-10-28 00:12:10,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:12:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 6794 transitions. [2020-10-28 00:12:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 00:12:10,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:12:10,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:12:10,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 00:12:10,751 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:12:10,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:12:10,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1798495426, now seen corresponding path program 1 times [2020-10-28 00:12:10,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:12:10,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547862617] [2020-10-28 00:12:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:12:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:10,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:10,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:15,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:12:15,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:16,062 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:12:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:12:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:16,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:16,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:16,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:12:16,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:12:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:12:16,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:12:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:12:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:12:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:12:16,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547862617] [2020-10-28 00:12:16,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:12:16,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:12:16,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993880174] [2020-10-28 00:12:16,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:12:16,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:12:16,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:12:16,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:12:16,103 INFO L87 Difference]: Start difference. First operand 4959 states and 6794 transitions. Second operand 4 states. [2020-10-28 00:12:18,728 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 00:12:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:12:19,137 INFO L93 Difference]: Finished difference Result 13343 states and 18076 transitions. [2020-10-28 00:12:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:12:19,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 00:12:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:12:19,151 INFO L225 Difference]: With dead ends: 13343 [2020-10-28 00:12:19,151 INFO L226 Difference]: Without dead ends: 8974 [2020-10-28 00:12:19,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:12:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8974 states. [2020-10-28 00:12:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8974 to 8971. [2020-10-28 00:12:19,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8971 states. [2020-10-28 00:12:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8971 states to 8971 states and 11980 transitions. [2020-10-28 00:12:19,847 INFO L78 Accepts]: Start accepts. Automaton has 8971 states and 11980 transitions. Word has length 157 [2020-10-28 00:12:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:12:19,847 INFO L481 AbstractCegarLoop]: Abstraction has 8971 states and 11980 transitions. [2020-10-28 00:12:19,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:12:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8971 states and 11980 transitions. [2020-10-28 00:12:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 00:12:19,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:12:19,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:12:19,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 00:12:19,855 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:12:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:12:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1855727680, now seen corresponding path program 1 times [2020-10-28 00:12:19,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:12:19,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647571371] [2020-10-28 00:12:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:12:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:20,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:22,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:24,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:24,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:24,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 00:12:24,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 00:12:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:12:24,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:12:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 00:12:24,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 00:12:24,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:25,182 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:12:25,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:12:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:12:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:12:25,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647571371] [2020-10-28 00:12:25,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:12:25,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:12:25,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089939730] [2020-10-28 00:12:25,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:12:25,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:12:25,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:12:25,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:12:25,223 INFO L87 Difference]: Start difference. First operand 8971 states and 11980 transitions. Second operand 4 states. [2020-10-28 00:12:28,150 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 00:12:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:12:28,553 INFO L93 Difference]: Finished difference Result 13141 states and 17486 transitions. [2020-10-28 00:12:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:12:28,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-28 00:12:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:12:28,564 INFO L225 Difference]: With dead ends: 13141 [2020-10-28 00:12:28,564 INFO L226 Difference]: Without dead ends: 8956 [2020-10-28 00:12:28,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:12:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8956 states. [2020-10-28 00:12:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8956 to 8953. [2020-10-28 00:12:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-28 00:12:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 11844 transitions. [2020-10-28 00:12:29,249 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 11844 transitions. Word has length 159 [2020-10-28 00:12:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:12:29,249 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 11844 transitions. [2020-10-28 00:12:29,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:12:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 11844 transitions. [2020-10-28 00:12:29,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 00:12:29,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:12:29,257 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:12:29,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 00:12:29,257 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:12:29,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:12:29,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1480316657, now seen corresponding path program 1 times [2020-10-28 00:12:29,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:12:29,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126557849] [2020-10-28 00:12:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:12:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:29,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:29,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:31,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:32,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:33,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:34,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:34,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 00:12:34,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-28 00:12:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:12:34,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:12:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 00:12:34,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 00:12:34,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:34,592 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:12:34,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:12:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:34,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:12:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:12:34,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126557849] [2020-10-28 00:12:34,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:12:34,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:12:34,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62641021] [2020-10-28 00:12:34,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:12:34,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:12:34,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:12:34,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:12:34,644 INFO L87 Difference]: Start difference. First operand 8953 states and 11844 transitions. Second operand 4 states. [2020-10-28 00:12:37,378 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 00:12:37,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:12:37,809 INFO L93 Difference]: Finished difference Result 13077 states and 17230 transitions. [2020-10-28 00:12:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:12:37,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-28 00:12:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:12:37,817 INFO L225 Difference]: With dead ends: 13077 [2020-10-28 00:12:37,818 INFO L226 Difference]: Without dead ends: 8938 [2020-10-28 00:12:37,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:12:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8938 states. [2020-10-28 00:12:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8938 to 8935. [2020-10-28 00:12:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8935 states. [2020-10-28 00:12:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8935 states to 8935 states and 11700 transitions. [2020-10-28 00:12:38,441 INFO L78 Accepts]: Start accepts. Automaton has 8935 states and 11700 transitions. Word has length 159 [2020-10-28 00:12:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:12:38,441 INFO L481 AbstractCegarLoop]: Abstraction has 8935 states and 11700 transitions. [2020-10-28 00:12:38,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:12:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 8935 states and 11700 transitions. [2020-10-28 00:12:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 00:12:38,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:12:38,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:12:38,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 00:12:38,452 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:12:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:12:38,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1447705173, now seen corresponding path program 1 times [2020-10-28 00:12:38,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:12:38,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990847641] [2020-10-28 00:12:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:12:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:38,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:39,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:12:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:43,760 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 00:12:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:12:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:43,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:12:43,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:12:43,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:12:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:12:43,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:12:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:12:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:12:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:12:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:12:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:12:43,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990847641] [2020-10-28 00:12:43,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:12:43,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:12:43,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62803900] [2020-10-28 00:12:43,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:12:43,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:12:43,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:12:43,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:12:43,817 INFO L87 Difference]: Start difference. First operand 8935 states and 11700 transitions. Second operand 4 states. [2020-10-28 00:12:46,483 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-28 00:12:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:12:46,917 INFO L93 Difference]: Finished difference Result 12748 states and 16615 transitions. [2020-10-28 00:12:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:12:46,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-28 00:12:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:12:46,926 INFO L225 Difference]: With dead ends: 12748 [2020-10-28 00:12:46,926 INFO L226 Difference]: Without dead ends: 8689 [2020-10-28 00:12:46,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:12:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8689 states. [2020-10-28 00:12:47,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8689 to 8686. [2020-10-28 00:12:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8686 states. [2020-10-28 00:12:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8686 states to 8686 states and 11249 transitions. [2020-10-28 00:12:47,569 INFO L78 Accepts]: Start accepts. Automaton has 8686 states and 11249 transitions. Word has length 159 [2020-10-28 00:12:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:12:47,569 INFO L481 AbstractCegarLoop]: Abstraction has 8686 states and 11249 transitions. [2020-10-28 00:12:47,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:12:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 8686 states and 11249 transitions. [2020-10-28 00:12:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 00:12:47,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:12:47,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:12:47,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 00:12:47,576 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:12:47,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:12:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1094149711, now seen corresponding path program 1 times [2020-10-28 00:12:47,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:12:47,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579508725] [2020-10-28 00:12:47,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:12:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:12:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:12:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking...