/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:17:33,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:17:33,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:17:33,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:17:33,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:17:33,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:17:33,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:17:33,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:17:33,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:17:33,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:17:33,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:17:33,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:17:33,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:17:33,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:17:33,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:17:33,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:17:33,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:17:33,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:17:33,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:17:33,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:17:33,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:17:33,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:17:33,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:17:33,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:17:33,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:17:33,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:17:33,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:17:33,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:17:33,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:17:33,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:17:33,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:17:33,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:17:33,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:17:33,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:17:33,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:17:33,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:17:33,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:17:33,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:17:33,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:17:33,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:17:33,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:17:33,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:17:33,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:17:33,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:17:33,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:17:33,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:17:33,486 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:17:33,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:17:33,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:17:33,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:17:33,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:17:33,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:17:33,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:17:33,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:17:33,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:17:33,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:17:33,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:17:33,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:17:33,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:17:33,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:17:33,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:17:33,489 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:17:33,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:17:33,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:17:33,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:17:33,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:17:33,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:17:33,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:17:33,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:17:33,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:17:33,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:17:33,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:17:33,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:17:33,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:17:33,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:17:33,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:17:33,983 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:17:33,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-27 04:17:34,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8350194fd/e3bc0d9ec256473b89699bbeda84aa35/FLAGa73f297d4 [2020-10-27 04:17:34,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:17:34,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-27 04:17:34,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8350194fd/e3bc0d9ec256473b89699bbeda84aa35/FLAGa73f297d4 [2020-10-27 04:17:35,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8350194fd/e3bc0d9ec256473b89699bbeda84aa35 [2020-10-27 04:17:35,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:17:35,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:17:35,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:17:35,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:17:35,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:17:35,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70591157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35, skipping insertion in model container [2020-10-27 04:17:35,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:17:35,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:17:35,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:17:35,535 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:17:35,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:17:35,628 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:17:35,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35 WrapperNode [2020-10-27 04:17:35,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:17:35,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:17:35,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:17:35,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:17:35,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... [2020-10-27 04:17:35,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:17:35,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:17:35,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:17:35,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:17:35,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:17:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:17:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:17:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:17:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:17:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:17:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:17:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:17:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:17:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:17:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:17:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:17:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:17:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:17:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:17:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:17:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:17:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:17:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:17:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:17:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:17:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:17:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:17:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:17:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:17:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:17:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:17:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:17:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:17:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:17:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:17:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:17:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:17:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:17:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:17:37,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:17:37,024 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:17:37,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:17:37 BoogieIcfgContainer [2020-10-27 04:17:37,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:17:37,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:17:37,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:17:37,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:17:37,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:17:35" (1/3) ... [2020-10-27 04:17:37,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80340f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:17:37, skipping insertion in model container [2020-10-27 04:17:37,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:17:35" (2/3) ... [2020-10-27 04:17:37,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80340f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:17:37, skipping insertion in model container [2020-10-27 04:17:37,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:17:37" (3/3) ... [2020-10-27 04:17:37,037 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c [2020-10-27 04:17:37,051 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:17:37,057 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:17:37,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:17:37,104 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:17:37,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:17:37,105 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:17:37,105 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:17:37,105 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:17:37,105 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:17:37,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:17:37,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:17:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states. [2020-10-27 04:17:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 04:17:37,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:37,145 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] [2020-10-27 04:17:37,146 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:37,153 INFO L82 PathProgramCache]: Analyzing trace with hash -889878979, now seen corresponding path program 1 times [2020-10-27 04:17:37,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:37,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223185016] [2020-10-27 04:17:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:17:38,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-27 04:17:38,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:38,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 04:17:38,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:38,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:17:38,651 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:38,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 04:17:38,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:38,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:38,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:17:38,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:17:38,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:38,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:17:38,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:38,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:38,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:38,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:17:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:38,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:38,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:17:38,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:17:38,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:17:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:17:39,020 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-27 04:17:39,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:17:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:39,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:39,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:17:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:39,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:17:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:39,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:39,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:17:39,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:39,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:17:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:39,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:39,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:39,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:17:39,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:39,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:39,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:17:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:39,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:39,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:39,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:39,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:39,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223185016] [2020-10-27 04:17:39,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:39,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:17:39,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502736104] [2020-10-27 04:17:39,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:17:39,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:17:39,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:17:39,308 INFO L87 Difference]: Start difference. First operand 168 states. Second operand 6 states. [2020-10-27 04:17:39,860 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:17:40,347 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:17:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:41,142 INFO L93 Difference]: Finished difference Result 277 states and 438 transitions. [2020-10-27 04:17:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:17:41,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-27 04:17:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:41,160 INFO L225 Difference]: With dead ends: 277 [2020-10-27 04:17:41,160 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 04:17:41,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 04:17:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 160. [2020-10-27 04:17:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 04:17:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 256 transitions. [2020-10-27 04:17:41,239 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 256 transitions. Word has length 63 [2020-10-27 04:17:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:41,240 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 256 transitions. [2020-10-27 04:17:41,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:17:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 256 transitions. [2020-10-27 04:17:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 04:17:41,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:41,244 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] [2020-10-27 04:17:41,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:17:41,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:41,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1284245765, now seen corresponding path program 1 times [2020-10-27 04:17:41,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:41,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46199401] [2020-10-27 04:17:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 04:17:42,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-27 04:17:42,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:17:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:17:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:42,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,490 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:17:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:42,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:17:42,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 04:17:42,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:17:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:17:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:17:42,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:17:42,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:17:42,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:17:42,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:17:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:42,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:42,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:42,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:42,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:42,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 04:17:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:42,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:42,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:42,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:42,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 04:17:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:17:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:42,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:42,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:42,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:42,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:42,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:42,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:42,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46199401] [2020-10-27 04:17:42,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:42,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:17:42,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062278661] [2020-10-27 04:17:42,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:17:42,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:42,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:17:42,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:17:42,998 INFO L87 Difference]: Start difference. First operand 160 states and 256 transitions. Second operand 12 states. [2020-10-27 04:17:43,719 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:44,095 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 04:17:44,549 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:17:44,894 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:46,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:46,667 INFO L93 Difference]: Finished difference Result 272 states and 426 transitions. [2020-10-27 04:17:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:17:46,668 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-10-27 04:17:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:46,672 INFO L225 Difference]: With dead ends: 272 [2020-10-27 04:17:46,672 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 04:17:46,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:17:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 04:17:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 160. [2020-10-27 04:17:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-27 04:17:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 229 transitions. [2020-10-27 04:17:46,701 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 229 transitions. Word has length 63 [2020-10-27 04:17:46,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:46,701 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 229 transitions. [2020-10-27 04:17:46,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:17:46,701 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 229 transitions. [2020-10-27 04:17:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:17:46,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:46,705 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] [2020-10-27 04:17:46,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:17:46,705 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:46,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash 11623140, now seen corresponding path program 1 times [2020-10-27 04:17:46,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:46,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788915984] [2020-10-27 04:17:46,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:51,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:17:51,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:17:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 04:17:51,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:17:51,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:17:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:17:52,105 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:52,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:17:52,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:52,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:52,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:17:52,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:17:52,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:17:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:17:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:17:52,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:17:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:17:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:52,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:17:52,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:17:52,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:52,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:17:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:52,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:52,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:17:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:52,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:17:52,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:17:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:52,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:52,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:52,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788915984] [2020-10-27 04:17:52,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:52,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:17:52,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935296033] [2020-10-27 04:17:52,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:17:52,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:52,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:17:52,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:52,489 INFO L87 Difference]: Start difference. First operand 160 states and 229 transitions. Second operand 9 states. [2020-10-27 04:17:52,811 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:54,962 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:17:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:55,496 INFO L93 Difference]: Finished difference Result 370 states and 553 transitions. [2020-10-27 04:17:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:17:55,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 04:17:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:55,505 INFO L225 Difference]: With dead ends: 370 [2020-10-27 04:17:55,506 INFO L226 Difference]: Without dead ends: 279 [2020-10-27 04:17:55,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:17:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-27 04:17:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 242. [2020-10-27 04:17:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-27 04:17:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 353 transitions. [2020-10-27 04:17:55,599 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 353 transitions. Word has length 89 [2020-10-27 04:17:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:55,601 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 353 transitions. [2020-10-27 04:17:55,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:17:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 353 transitions. [2020-10-27 04:17:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:17:55,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:55,616 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] [2020-10-27 04:17:55,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:17:55,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1165881419, now seen corresponding path program 1 times [2020-10-27 04:17:55,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:55,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338848602] [2020-10-27 04:17:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:55,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:00,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:00,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:18:00,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:18:00,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:18:00,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:18:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,006 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:01,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:01,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:18:01,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:01,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:01,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:01,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:01,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:01,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 04:18:01,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:01,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:18:01,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:18:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:01,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:18:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:01,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:01,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:18:01,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:18:01,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:18:01,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:18:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:01,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:01,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:01,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:18:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:01,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:01,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:01,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:01,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:01,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:18:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:01,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:01,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:01,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:01,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338848602] [2020-10-27 04:18:01,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:01,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:01,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47747647] [2020-10-27 04:18:01,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:01,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:01,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:01,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:01,464 INFO L87 Difference]: Start difference. First operand 242 states and 353 transitions. Second operand 9 states. [2020-10-27 04:18:01,743 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:02,097 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:02,449 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:03,294 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:04,180 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:07,109 INFO L93 Difference]: Finished difference Result 888 states and 1300 transitions. [2020-10-27 04:18:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:07,110 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 04:18:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:07,116 INFO L225 Difference]: With dead ends: 888 [2020-10-27 04:18:07,116 INFO L226 Difference]: Without dead ends: 669 [2020-10-27 04:18:07,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-10-27 04:18:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 607. [2020-10-27 04:18:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-10-27 04:18:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 883 transitions. [2020-10-27 04:18:07,207 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 883 transitions. Word has length 91 [2020-10-27 04:18:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:07,207 INFO L481 AbstractCegarLoop]: Abstraction has 607 states and 883 transitions. [2020-10-27 04:18:07,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 883 transitions. [2020-10-27 04:18:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:18:07,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:07,210 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] [2020-10-27 04:18:07,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:18:07,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash -237589934, now seen corresponding path program 1 times [2020-10-27 04:18:07,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:07,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075666464] [2020-10-27 04:18:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:11,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:18:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:18:12,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:18:12,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,509 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:12,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:18:12,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:18:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 04:18:12,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:12,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:18:12,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:18:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:12,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:12,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:18:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:12,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:18:12,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:18:12,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:18:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:12,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:12,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:18:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:18:12,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:18:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:12,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:12,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:12,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:12,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:12,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:12,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:18:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:12,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075666464] [2020-10-27 04:18:12,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:12,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:12,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490843565] [2020-10-27 04:18:12,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:12,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:12,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:12,990 INFO L87 Difference]: Start difference. First operand 607 states and 883 transitions. Second operand 9 states. [2020-10-27 04:18:13,316 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:13,689 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:18:14,047 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:18:15,061 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-27 04:18:15,784 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:18,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:18,874 INFO L93 Difference]: Finished difference Result 2251 states and 3275 transitions. [2020-10-27 04:18:18,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:18,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-27 04:18:18,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:18,886 INFO L225 Difference]: With dead ends: 2251 [2020-10-27 04:18:18,886 INFO L226 Difference]: Without dead ends: 1703 [2020-10-27 04:18:18,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-27 04:18:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1567. [2020-10-27 04:18:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2020-10-27 04:18:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2258 transitions. [2020-10-27 04:18:19,030 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2258 transitions. Word has length 92 [2020-10-27 04:18:19,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:19,030 INFO L481 AbstractCegarLoop]: Abstraction has 1567 states and 2258 transitions. [2020-10-27 04:18:19,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2258 transitions. [2020-10-27 04:18:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:18:19,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:19,035 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] [2020-10-27 04:18:19,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:18:19,035 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:19,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:19,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1997704196, now seen corresponding path program 1 times [2020-10-27 04:18:19,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:19,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401839981] [2020-10-27 04:18:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:18:24,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:24,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 04:18:24,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:24,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:18:24,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,353 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:24,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:24,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:18:24,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:24,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:24,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:18:24,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:24,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:18:24,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:24,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:18:24,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:18:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:24,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:24,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:24,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:24,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:18:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:18:24,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:18:24,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:18:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:18:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:24,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:24,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:18:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:24,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:24,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:18:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:24,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:24,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:24,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:24,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:24,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:24,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:24,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401839981] [2020-10-27 04:18:24,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:24,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:24,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359056545] [2020-10-27 04:18:24,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:24,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:24,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:24,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:24,744 INFO L87 Difference]: Start difference. First operand 1567 states and 2258 transitions. Second operand 9 states. [2020-10-27 04:18:25,067 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:25,408 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:25,842 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:26,444 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:27,508 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:30,928 INFO L93 Difference]: Finished difference Result 5251 states and 7574 transitions. [2020-10-27 04:18:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:30,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 04:18:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:30,959 INFO L225 Difference]: With dead ends: 5251 [2020-10-27 04:18:30,959 INFO L226 Difference]: Without dead ends: 3762 [2020-10-27 04:18:30,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2020-10-27 04:18:31,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3541. [2020-10-27 04:18:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3541 states. [2020-10-27 04:18:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 5009 transitions. [2020-10-27 04:18:31,285 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 5009 transitions. Word has length 93 [2020-10-27 04:18:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:31,286 INFO L481 AbstractCegarLoop]: Abstraction has 3541 states and 5009 transitions. [2020-10-27 04:18:31,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 5009 transitions. [2020-10-27 04:18:31,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:18:31,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:31,295 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] [2020-10-27 04:18:31,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:18:31,295 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:31,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:31,296 INFO L82 PathProgramCache]: Analyzing trace with hash -528360127, now seen corresponding path program 1 times [2020-10-27 04:18:31,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:31,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140677211] [2020-10-27 04:18:31,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:18:36,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:18:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:18:36,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:18:36,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:18:36,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,722 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:36,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:36,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:18:36,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:36,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:36,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:18:36,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 04:18:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:18:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:18:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:18:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:37,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:37,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:37,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:37,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:37,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:37,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:37,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:18:37,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:18:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:18:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:37,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:37,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:37,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:18:37,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:18:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:18:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:37,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:37,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:37,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:37,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:37,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:37,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:37,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:18:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:37,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:37,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:37,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:37,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:18:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:37,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:37,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:37,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:37,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:37,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140677211] [2020-10-27 04:18:37,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:37,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:18:37,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320055066] [2020-10-27 04:18:37,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:18:37,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:37,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:18:37,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:18:37,224 INFO L87 Difference]: Start difference. First operand 3541 states and 5009 transitions. Second operand 8 states. [2020-10-27 04:18:37,572 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:18:37,915 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:18:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:39,748 INFO L93 Difference]: Finished difference Result 5909 states and 8322 transitions. [2020-10-27 04:18:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:18:39,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-10-27 04:18:39,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:39,761 INFO L225 Difference]: With dead ends: 5909 [2020-10-27 04:18:39,761 INFO L226 Difference]: Without dead ends: 2382 [2020-10-27 04:18:39,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:18:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2020-10-27 04:18:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2252. [2020-10-27 04:18:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2252 states. [2020-10-27 04:18:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3162 transitions. [2020-10-27 04:18:39,949 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3162 transitions. Word has length 93 [2020-10-27 04:18:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:39,949 INFO L481 AbstractCegarLoop]: Abstraction has 2252 states and 3162 transitions. [2020-10-27 04:18:39,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:18:39,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3162 transitions. [2020-10-27 04:18:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 04:18:39,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:39,955 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] [2020-10-27 04:18:39,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:18:39,956 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:39,956 INFO L82 PathProgramCache]: Analyzing trace with hash 714517157, now seen corresponding path program 1 times [2020-10-27 04:18:39,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:39,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158988797] [2020-10-27 04:18:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:44,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:44,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:18:44,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:18:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:18:44,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:18:44,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,275 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:45,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:18:45,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:45,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:18:45,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:18:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-27 04:18:45,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:18:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:18:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:45,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:45,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:45,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:45,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:18:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:18:45,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:18:45,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:18:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:18:45,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:18:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:45,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:18:45,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:45,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:18:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:45,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:45,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:45,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:18:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:45,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:45,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:45,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:45,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:45,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158988797] [2020-10-27 04:18:45,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:45,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:45,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636387476] [2020-10-27 04:18:45,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:45,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:45,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:45,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:45,893 INFO L87 Difference]: Start difference. First operand 2252 states and 3162 transitions. Second operand 9 states. [2020-10-27 04:18:46,197 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:46,517 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:46,894 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:47,677 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:48,473 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:51,579 INFO L93 Difference]: Finished difference Result 7603 states and 10652 transitions. [2020-10-27 04:18:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:51,580 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-27 04:18:51,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:51,610 INFO L225 Difference]: With dead ends: 7603 [2020-10-27 04:18:51,611 INFO L226 Difference]: Without dead ends: 5515 [2020-10-27 04:18:51,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2020-10-27 04:18:52,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 5339. [2020-10-27 04:18:52,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5339 states. [2020-10-27 04:18:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 7340 transitions. [2020-10-27 04:18:52,118 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 7340 transitions. Word has length 94 [2020-10-27 04:18:52,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:52,118 INFO L481 AbstractCegarLoop]: Abstraction has 5339 states and 7340 transitions. [2020-10-27 04:18:52,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 7340 transitions. [2020-10-27 04:18:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 04:18:52,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:52,132 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] [2020-10-27 04:18:52,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:18:52,132 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash -390811689, now seen corresponding path program 1 times [2020-10-27 04:18:52,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:52,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461588620] [2020-10-27 04:18:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:18:57,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:18:57,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 04:18:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,487 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:18:57,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:57,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:57,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:57,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:18:57,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:18:57,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 04:18:57,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:57,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:57,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:57,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:18:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:57,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:18:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:57,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:18:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:18:57,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:18:57,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:57,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:18:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:18:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:18:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:57,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:57,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:57,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:57,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:18:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:57,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:18:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:57,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:57,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:57,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:57,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:57,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461588620] [2020-10-27 04:18:57,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:57,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:57,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647058617] [2020-10-27 04:18:57,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:57,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:57,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:57,919 INFO L87 Difference]: Start difference. First operand 5339 states and 7340 transitions. Second operand 9 states. [2020-10-27 04:18:58,246 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:58,563 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:18:58,886 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:59,515 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:19:00,377 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:00,852 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 04:19:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:04,432 INFO L93 Difference]: Finished difference Result 11683 states and 16022 transitions. [2020-10-27 04:19:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:19:04,433 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-27 04:19:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:04,479 INFO L225 Difference]: With dead ends: 11683 [2020-10-27 04:19:04,479 INFO L226 Difference]: Without dead ends: 8919 [2020-10-27 04:19:04,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:19:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8919 states. [2020-10-27 04:19:05,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8919 to 8029. [2020-10-27 04:19:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8029 states. [2020-10-27 04:19:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8029 states to 8029 states and 10840 transitions. [2020-10-27 04:19:05,192 INFO L78 Accepts]: Start accepts. Automaton has 8029 states and 10840 transitions. Word has length 94 [2020-10-27 04:19:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:05,193 INFO L481 AbstractCegarLoop]: Abstraction has 8029 states and 10840 transitions. [2020-10-27 04:19:05,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8029 states and 10840 transitions. [2020-10-27 04:19:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:19:05,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:05,212 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] [2020-10-27 04:19:05,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:19:05,212 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:05,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:05,212 INFO L82 PathProgramCache]: Analyzing trace with hash -269204698, now seen corresponding path program 1 times [2020-10-27 04:19:05,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:05,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244420109] [2020-10-27 04:19:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:19:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,536 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:10,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:10,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:19:10,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:10,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:10,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:10,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:10,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:19:10,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 04:19:10,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:19:10,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:19:10,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:19:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:10,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:10,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:19:10,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:19:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:10,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:10,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:10,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:19:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:10,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:10,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:10,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:19:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:10,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:10,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:10,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:10,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:10,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:10,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:10,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244420109] [2020-10-27 04:19:10,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:10,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:19:10,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456267602] [2020-10-27 04:19:10,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:19:10,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:10,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:19:10,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:19:10,828 INFO L87 Difference]: Start difference. First operand 8029 states and 10840 transitions. Second operand 8 states. [2020-10-27 04:19:11,311 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:19:11,655 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:19:12,690 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 04:19:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:13,232 INFO L93 Difference]: Finished difference Result 12968 states and 17569 transitions. [2020-10-27 04:19:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:19:13,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-27 04:19:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:13,280 INFO L225 Difference]: With dead ends: 12968 [2020-10-27 04:19:13,280 INFO L226 Difference]: Without dead ends: 5362 [2020-10-27 04:19:13,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:19:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2020-10-27 04:19:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5175. [2020-10-27 04:19:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5175 states. [2020-10-27 04:19:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 7070 transitions. [2020-10-27 04:19:13,714 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 7070 transitions. Word has length 95 [2020-10-27 04:19:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:13,714 INFO L481 AbstractCegarLoop]: Abstraction has 5175 states and 7070 transitions. [2020-10-27 04:19:13,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:19:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 7070 transitions. [2020-10-27 04:19:13,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:19:13,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:13,727 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] [2020-10-27 04:19:13,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:19:13,727 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:13,727 INFO L82 PathProgramCache]: Analyzing trace with hash -28855051, now seen corresponding path program 1 times [2020-10-27 04:19:13,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:13,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691164125] [2020-10-27 04:19:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:13,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:13,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:15,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2011 [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 04:19:15,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,084 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:16,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:16,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:19:16,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:16,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:19:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 04:19:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:16,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:16,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:16,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:19:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:19:16,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:19:16,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:19:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:19:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:19:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:16,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:19:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:16,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:16,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:16,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:16,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:16,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691164125] [2020-10-27 04:19:16,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:16,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:16,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798888141] [2020-10-27 04:19:16,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:16,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:16,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:16,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:16,420 INFO L87 Difference]: Start difference. First operand 5175 states and 7070 transitions. Second operand 9 states. [2020-10-27 04:19:16,744 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:19,601 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:19:20,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:20,079 INFO L93 Difference]: Finished difference Result 11049 states and 15627 transitions. [2020-10-27 04:19:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:19:20,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:19:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:20,111 INFO L225 Difference]: With dead ends: 11049 [2020-10-27 04:19:20,111 INFO L226 Difference]: Without dead ends: 7493 [2020-10-27 04:19:20,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:19:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2020-10-27 04:19:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7183. [2020-10-27 04:19:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7183 states. [2020-10-27 04:19:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 9951 transitions. [2020-10-27 04:19:20,825 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 9951 transitions. Word has length 95 [2020-10-27 04:19:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:20,825 INFO L481 AbstractCegarLoop]: Abstraction has 7183 states and 9951 transitions. [2020-10-27 04:19:20,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 9951 transitions. [2020-10-27 04:19:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:19:20,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:20,838 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] [2020-10-27 04:19:20,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:19:20,839 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:20,839 INFO L82 PathProgramCache]: Analyzing trace with hash 210087603, now seen corresponding path program 1 times [2020-10-27 04:19:20,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:20,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905409258] [2020-10-27 04:19:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:20,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:25,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:25,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:19:25,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 04:19:25,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:19:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:25,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 04:19:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,215 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:26,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:26,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:19:26,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:26,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:26,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:19:26,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:26,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:26,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 04:19:26,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:26,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:26,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:19:26,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:19:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:26,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:26,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:19:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:19:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:19:26,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:26,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:26,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:19:26,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:26,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:19:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:26,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:19:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:26,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:26,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:26,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:26,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:26,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:26,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:26,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905409258] [2020-10-27 04:19:26,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:26,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:19:26,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104293141] [2020-10-27 04:19:26,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:19:26,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:19:26,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:19:26,644 INFO L87 Difference]: Start difference. First operand 7183 states and 9951 transitions. Second operand 14 states. [2020-10-27 04:19:27,299 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-27 04:19:27,616 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:28,276 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:29,249 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-27 04:19:29,489 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-27 04:19:29,756 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-27 04:19:29,992 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-27 04:19:30,421 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:19:30,856 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:19:31,845 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-27 04:19:32,212 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:19:32,636 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:19:32,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:32,848 INFO L93 Difference]: Finished difference Result 13388 states and 18843 transitions. [2020-10-27 04:19:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:19:32,853 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-27 04:19:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:32,892 INFO L225 Difference]: With dead ends: 13388 [2020-10-27 04:19:32,892 INFO L226 Difference]: Without dead ends: 10108 [2020-10-27 04:19:32,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:19:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2020-10-27 04:19:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 7637. [2020-10-27 04:19:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2020-10-27 04:19:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 10557 transitions. [2020-10-27 04:19:33,687 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 10557 transitions. Word has length 97 [2020-10-27 04:19:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:33,688 INFO L481 AbstractCegarLoop]: Abstraction has 7637 states and 10557 transitions. [2020-10-27 04:19:33,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:19:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 10557 transitions. [2020-10-27 04:19:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:19:33,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:33,706 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] [2020-10-27 04:19:33,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:19:33,707 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:33,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:33,707 INFO L82 PathProgramCache]: Analyzing trace with hash 484847217, now seen corresponding path program 1 times [2020-10-27 04:19:33,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:33,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452016995] [2020-10-27 04:19:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:34,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:19:38,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:19:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:19:38,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:19:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:19:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,034 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:39,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:19:39,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:39,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 04:19:39,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:39,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:19:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:39,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:19:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:19:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:19:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:19:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:39,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:39,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:19:39,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:19:39,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:19:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:19:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:39,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:39,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:19:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:39,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:39,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:39,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:39,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:39,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:39,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:39,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:39,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452016995] [2020-10-27 04:19:39,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:39,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:39,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774279353] [2020-10-27 04:19:39,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:39,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:39,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:39,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:39,480 INFO L87 Difference]: Start difference. First operand 7637 states and 10557 transitions. Second operand 9 states. [2020-10-27 04:19:39,804 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:40,145 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:19:40,560 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:19:41,197 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:19:42,270 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:47,063 INFO L93 Difference]: Finished difference Result 23276 states and 32732 transitions. [2020-10-27 04:19:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:19:47,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-27 04:19:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:47,143 INFO L225 Difference]: With dead ends: 23276 [2020-10-27 04:19:47,144 INFO L226 Difference]: Without dead ends: 16608 [2020-10-27 04:19:47,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:19:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16608 states. [2020-10-27 04:19:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16608 to 16102. [2020-10-27 04:19:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16102 states. [2020-10-27 04:19:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16102 states to 16102 states and 22144 transitions. [2020-10-27 04:19:48,585 INFO L78 Accepts]: Start accepts. Automaton has 16102 states and 22144 transitions. Word has length 97 [2020-10-27 04:19:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:48,585 INFO L481 AbstractCegarLoop]: Abstraction has 16102 states and 22144 transitions. [2020-10-27 04:19:48,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 16102 states and 22144 transitions. [2020-10-27 04:19:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 04:19:48,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:48,610 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] [2020-10-27 04:19:48,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:19:48,610 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:48,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash 103085774, now seen corresponding path program 1 times [2020-10-27 04:19:48,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:48,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247443349] [2020-10-27 04:19:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:53,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:19:53,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:19:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:53,956 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:53,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:53,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:19:53,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:53,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:54,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:19:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:19:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:54,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:54,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:19:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:54,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:19:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:19:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:54,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:19:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:54,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:54,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:19:54,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:54,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:54,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:19:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:19:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:54,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:54,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:54,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:54,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:19:54,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:54,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:54,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:54,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:54,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 04:19:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:54,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:54,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247443349] [2020-10-27 04:19:54,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:54,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:19:54,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370438118] [2020-10-27 04:19:54,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:19:54,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:54,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:19:54,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:19:54,305 INFO L87 Difference]: Start difference. First operand 16102 states and 22144 transitions. Second operand 8 states. [2020-10-27 04:19:54,780 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:19:55,133 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:19:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:57,368 INFO L93 Difference]: Finished difference Result 28929 states and 39762 transitions. [2020-10-27 04:19:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:19:57,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-10-27 04:19:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:57,420 INFO L225 Difference]: With dead ends: 28929 [2020-10-27 04:19:57,420 INFO L226 Difference]: Without dead ends: 13185 [2020-10-27 04:19:57,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:19:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13185 states. [2020-10-27 04:19:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13185 to 12886. [2020-10-27 04:19:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12886 states. [2020-10-27 04:19:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12886 states to 12886 states and 17748 transitions. [2020-10-27 04:19:58,442 INFO L78 Accepts]: Start accepts. Automaton has 12886 states and 17748 transitions. Word has length 98 [2020-10-27 04:19:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:58,442 INFO L481 AbstractCegarLoop]: Abstraction has 12886 states and 17748 transitions. [2020-10-27 04:19:58,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:19:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 12886 states and 17748 transitions. [2020-10-27 04:19:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:19:58,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:58,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:19:58,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:19:58,463 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash -300779915, now seen corresponding path program 1 times [2020-10-27 04:19:58,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:58,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58239076] [2020-10-27 04:19:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:58,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:03,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 04:20:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:03,819 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:03,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:03,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:03,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:03,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:03,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:03,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:03,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:03,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:03,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:20:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 04:20:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:20:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:20:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:03,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:03,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:03,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:04,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:20:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:04,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:04,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:04,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:04,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:04,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:04,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:04,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:04,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:20:04,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:20:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:04,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:20:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:04,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:04,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:04,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:04,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:20:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:04,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58239076] [2020-10-27 04:20:04,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:04,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:20:04,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592951479] [2020-10-27 04:20:04,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:20:04,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:04,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:20:04,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:20:04,165 INFO L87 Difference]: Start difference. First operand 12886 states and 17748 transitions. Second operand 9 states. [2020-10-27 04:20:04,511 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:04,855 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:20:05,246 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:20:06,179 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:20:06,508 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 04:20:10,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:10,410 INFO L93 Difference]: Finished difference Result 30696 states and 43307 transitions. [2020-10-27 04:20:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:20:10,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 04:20:10,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:10,475 INFO L225 Difference]: With dead ends: 30696 [2020-10-27 04:20:10,475 INFO L226 Difference]: Without dead ends: 21259 [2020-10-27 04:20:10,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:20:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21259 states. [2020-10-27 04:20:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21259 to 20571. [2020-10-27 04:20:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20571 states. [2020-10-27 04:20:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20571 states to 20571 states and 28203 transitions. [2020-10-27 04:20:12,348 INFO L78 Accepts]: Start accepts. Automaton has 20571 states and 28203 transitions. Word has length 99 [2020-10-27 04:20:12,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:12,349 INFO L481 AbstractCegarLoop]: Abstraction has 20571 states and 28203 transitions. [2020-10-27 04:20:12,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:20:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 20571 states and 28203 transitions. [2020-10-27 04:20:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:20:12,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:12,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:12,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:20:12,373 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:12,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2041719808, now seen corresponding path program 1 times [2020-10-27 04:20:12,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:12,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034648972] [2020-10-27 04:20:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:12,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:17,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:17,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 04:20:17,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:20:17,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:20:17,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 04:20:17,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:17,725 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:17,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:17,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:17,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:17,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:17,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:17,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:17,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:17,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:17,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:17,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:20:17,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:20:17,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 04:20:17,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:17,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:17,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:17,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:20:17,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:18,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:20:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:18,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:18,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:18,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:18,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:18,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:18,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:18,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:18,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:18,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:18,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:20:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:18,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:18,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:20:18,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:20:18,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:20:18,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:18,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:20:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:18,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:18,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:18,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:18,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:18,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:18,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:20:18,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:20:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:20:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:18,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:18,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:18,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:18,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:18,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:18,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:18,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:18,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 04:20:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:18,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:18,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:18,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:18,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:18,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:18,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:18,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034648972] [2020-10-27 04:20:18,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:18,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:20:18,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672122265] [2020-10-27 04:20:18,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:20:18,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:18,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:20:18,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:20:18,218 INFO L87 Difference]: Start difference. First operand 20571 states and 28203 transitions. Second operand 9 states. [2020-10-27 04:20:18,574 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:18,933 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:20:19,365 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:20:19,857 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:20:20,856 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:25,300 INFO L93 Difference]: Finished difference Result 36929 states and 50465 transitions. [2020-10-27 04:20:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:20:25,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-27 04:20:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:25,383 INFO L225 Difference]: With dead ends: 36929 [2020-10-27 04:20:25,384 INFO L226 Difference]: Without dead ends: 22707 [2020-10-27 04:20:25,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:20:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22707 states. [2020-10-27 04:20:27,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22707 to 21624. [2020-10-27 04:20:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21624 states. [2020-10-27 04:20:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21624 states to 21624 states and 29365 transitions. [2020-10-27 04:20:27,249 INFO L78 Accepts]: Start accepts. Automaton has 21624 states and 29365 transitions. Word has length 100 [2020-10-27 04:20:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:27,249 INFO L481 AbstractCegarLoop]: Abstraction has 21624 states and 29365 transitions. [2020-10-27 04:20:27,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:20:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 21624 states and 29365 transitions. [2020-10-27 04:20:27,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:20:27,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:27,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:27,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:20:27,266 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:27,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1490766384, now seen corresponding path program 1 times [2020-10-27 04:20:27,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:27,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715731212] [2020-10-27 04:20:27,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:27,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:29,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:29,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 04:20:29,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:20:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-27 04:20:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 04:20:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:20:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:29,908 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:29,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:20:29,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 04:20:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:29,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:20:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:29,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:30,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:20:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:20:30,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:20:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:30,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:20:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:30,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:30,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:30,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:20:30,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:20:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:30,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:20:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:30,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:30,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:30,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:30,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:20:30,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:20:30,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:20:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 04:20:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:30,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:30,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:30,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:30,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:30,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:30,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:30,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715731212] [2020-10-27 04:20:30,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:30,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:20:30,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691226331] [2020-10-27 04:20:30,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:20:30,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:30,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:20:30,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:20:30,155 INFO L87 Difference]: Start difference. First operand 21624 states and 29365 transitions. Second operand 9 states. [2020-10-27 04:20:30,471 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:34,591 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:20:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:35,534 INFO L93 Difference]: Finished difference Result 50742 states and 70288 transitions. [2020-10-27 04:20:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:20:35,535 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-27 04:20:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:35,662 INFO L225 Difference]: With dead ends: 50742 [2020-10-27 04:20:35,663 INFO L226 Difference]: Without dead ends: 33903 [2020-10-27 04:20:35,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:20:35,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33903 states. [2020-10-27 04:20:38,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33903 to 32786. [2020-10-27 04:20:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32786 states. [2020-10-27 04:20:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32786 states to 32786 states and 44519 transitions. [2020-10-27 04:20:38,433 INFO L78 Accepts]: Start accepts. Automaton has 32786 states and 44519 transitions. Word has length 100 [2020-10-27 04:20:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:38,434 INFO L481 AbstractCegarLoop]: Abstraction has 32786 states and 44519 transitions. [2020-10-27 04:20:38,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:20:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 32786 states and 44519 transitions. [2020-10-27 04:20:38,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:20:38,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:38,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:20:38,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:20:38,457 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:38,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:38,458 INFO L82 PathProgramCache]: Analyzing trace with hash -384287571, now seen corresponding path program 1 times [2020-10-27 04:20:38,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:38,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038049766] [2020-10-27 04:20:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:42,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:43,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 04:20:43,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:43,812 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:43,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:43,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:20:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:43,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:43,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:20:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:44,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:20:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:44,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:44,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:20:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:44,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:44,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:44,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:20:44,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:44,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:20:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:20:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:20:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:20:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:20:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:20:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:20:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:20:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:20:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:44,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:44,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:20:44,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:44,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:20:44,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:44,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:44,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:20:44,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:44,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:44,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 04:20:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:44,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:44,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:44,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:20:44,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:44,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:20:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:20:44,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038049766] [2020-10-27 04:20:44,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:20:44,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:20:44,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451929155] [2020-10-27 04:20:44,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:20:44,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:20:44,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:20:44,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:20:44,281 INFO L87 Difference]: Start difference. First operand 32786 states and 44519 transitions. Second operand 14 states. [2020-10-27 04:20:44,652 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:20:44,982 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:20:45,596 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:20:46,185 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:20:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:20:51,097 INFO L93 Difference]: Finished difference Result 50684 states and 68894 transitions. [2020-10-27 04:20:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:20:51,098 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-27 04:20:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:20:51,215 INFO L225 Difference]: With dead ends: 50684 [2020-10-27 04:20:51,215 INFO L226 Difference]: Without dead ends: 40089 [2020-10-27 04:20:51,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:20:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40089 states. [2020-10-27 04:20:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40089 to 35081. [2020-10-27 04:20:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35081 states. [2020-10-27 04:20:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35081 states to 35081 states and 47339 transitions. [2020-10-27 04:20:54,419 INFO L78 Accepts]: Start accepts. Automaton has 35081 states and 47339 transitions. Word has length 105 [2020-10-27 04:20:54,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:20:54,419 INFO L481 AbstractCegarLoop]: Abstraction has 35081 states and 47339 transitions. [2020-10-27 04:20:54,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:20:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 35081 states and 47339 transitions. [2020-10-27 04:20:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:20:54,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:20:54,445 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] [2020-10-27 04:20:54,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:20:54,445 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:20:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:20:54,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1001915823, now seen corresponding path program 1 times [2020-10-27 04:20:54,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:20:54,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339773808] [2020-10-27 04:20:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:20:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:54,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:59,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 04:20:59,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:20:59,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:20:59,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:20:59,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:20:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:59,769 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:20:59,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:20:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:59,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:20:59,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:59,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:20:59,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:20:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:59,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:20:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:59,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:20:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:59,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:20:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:20:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-27 04:20:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:20:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:20:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:20:59,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 04:20:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:20:59,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:20:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 04:21:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:21:00,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:21:00,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:00,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:21:00,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:21:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:21:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:21:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:21:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:21:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:21:00,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 04:21:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:21:00,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:21:00,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:21:00,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:21:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:21:00,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339773808] [2020-10-27 04:21:00,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:21:00,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:21:00,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847898660] [2020-10-27 04:21:00,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:21:00,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:21:00,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:21:00,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:21:00,183 INFO L87 Difference]: Start difference. First operand 35081 states and 47339 transitions. Second operand 9 states. [2020-10-27 04:21:00,522 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:21:00,850 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:21:01,277 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:21:01,615 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:21:02,656 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 179