/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_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:38:14,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:38:14,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:38:14,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:38:14,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:38:14,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:38:14,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:38:14,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:38:14,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:38:14,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:38:14,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:38:14,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:38:14,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:38:14,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:38:14,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:38:14,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:38:14,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:38:14,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:38:14,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:38:14,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:38:14,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:38:14,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:38:14,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:38:14,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:38:14,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:38:14,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:38:14,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:38:14,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:38:14,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:38:14,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:38:14,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:38:14,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:38:14,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:38:14,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:38:14,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:38:14,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:38:14,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:38:14,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:38:14,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:38:14,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:38:14,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:38:14,367 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 04:38:14,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:38:14,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:38:14,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:38:14,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:38:14,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:38:14,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:38:14,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:38:14,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:38:14,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:38:14,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:38:14,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:38:14,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:38:14,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:38:14,399 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:38:14,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:38:14,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:38:14,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:38:14,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:38:14,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:38:14,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:38:14,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:38:14,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:38:14,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:38:14,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:38:14,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:38:14,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:38:14,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:38:14,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:38:14,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:38:14,403 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:38:14,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:38:14,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:38:14,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:38:14,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:38:14,883 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:38:14,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:38:14,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2072063/311adf86ce2a49bba85cec6b48b9d56e/FLAG4c2a350ff [2020-10-27 04:38:15,677 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:38:15,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:38:15,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2072063/311adf86ce2a49bba85cec6b48b9d56e/FLAG4c2a350ff [2020-10-27 04:38:16,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb2072063/311adf86ce2a49bba85cec6b48b9d56e [2020-10-27 04:38:16,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:38:16,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:38:16,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:38:16,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:38:16,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:38:16,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c33cd83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16, skipping insertion in model container [2020-10-27 04:38:16,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:38:16,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:38:16,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:38:16,385 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:38:16,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:38:16,478 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:38:16,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16 WrapperNode [2020-10-27 04:38:16,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:38:16,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:38:16,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:38:16,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:38:16,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (1/1) ... [2020-10-27 04:38:16,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:38:16,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:38:16,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:38:16,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:38:16,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (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 04:38:16,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:38:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:38:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:38:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:38:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:38:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:38:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:38:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:38:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:38:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:38:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:38:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:38:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:38:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:38:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:38:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:38:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:38:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:38:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:38:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:38:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:38:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:38:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:38:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:38:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:38:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:38:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:38:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:38:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:38:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:38:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:38:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:38:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:38:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:38:17,697 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:38:17,698 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:38:17,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:17 BoogieIcfgContainer [2020-10-27 04:38:17,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:38:17,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:38:17,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:38:17,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:38:17,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:38:16" (1/3) ... [2020-10-27 04:38:17,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f7acc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:17, skipping insertion in model container [2020-10-27 04:38:17,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:38:16" (2/3) ... [2020-10-27 04:38:17,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f7acc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:38:17, skipping insertion in model container [2020-10-27 04:38:17,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:38:17" (3/3) ... [2020-10-27 04:38:17,709 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2020-10-27 04:38:17,722 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:38:17,728 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:38:17,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:38:17,793 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:38:17,793 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:38:17,793 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:38:17,793 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:38:17,794 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:38:17,794 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:38:17,794 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:38:17,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:38:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-10-27 04:38:17,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:38:17,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:17,852 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] [2020-10-27 04:38:17,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:17,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1910617669, now seen corresponding path program 1 times [2020-10-27 04:38:17,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:17,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121501958] [2020-10-27 04:38:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:18,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:18,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:38:18,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:18,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-27 04:38:18,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:18,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:18,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 04:38:18,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:18,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:38:19,184 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:19,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:19,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:19,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:38:19,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:19,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:19,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:19,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:19,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:19,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:19,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:38:19,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:38:19,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:38:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:19,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:19,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:38:19,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:38:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:19,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:38:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:19,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:19,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:19,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:19,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:38:19,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:19,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:38:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:19,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:19,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:38:19,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:19,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:38:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:19,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:19,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:19,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:38:19,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:19,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:19,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:19,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:38:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:19,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:19,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:19,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:19,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:38:19,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:19,497 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 04:38:19,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121501958] [2020-10-27 04:38:19,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:19,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:38:19,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255022259] [2020-10-27 04:38:19,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:38:19,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:19,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:38:19,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:38:19,523 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 6 states. [2020-10-27 04:38:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:20,874 INFO L93 Difference]: Finished difference Result 301 states and 474 transitions. [2020-10-27 04:38:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:38:20,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-27 04:38:20,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:20,889 INFO L225 Difference]: With dead ends: 301 [2020-10-27 04:38:20,889 INFO L226 Difference]: Without dead ends: 187 [2020-10-27 04:38:20,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:20,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-27 04:38:20,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-10-27 04:38:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 04:38:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 268 transitions. [2020-10-27 04:38:20,960 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 268 transitions. Word has length 66 [2020-10-27 04:38:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:20,961 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 268 transitions. [2020-10-27 04:38:20,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:38:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 268 transitions. [2020-10-27 04:38:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 04:38:20,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:20,965 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] [2020-10-27 04:38:20,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:38:20,966 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash 538982461, now seen corresponding path program 1 times [2020-10-27 04:38:20,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:20,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868670237] [2020-10-27 04:38:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:21,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:21,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 04:38:21,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-27 04:38:21,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:38:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:38:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:38:21,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,226 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:22,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:22,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:22,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:22,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 04:38:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:22,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:22,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:22,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:38:22,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:38:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:38:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 04:38:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:22,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:22,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:38:22,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:22,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:38:22,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:38:22,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:38:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 04:38:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:22,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:22,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:22,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:22,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:38:22,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:22,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 04:38:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:22,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:22,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:22,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 04:38:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:38:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:22,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:22,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:22,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:22,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:38:22,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:22,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:22,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:22,599 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 04:38:22,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868670237] [2020-10-27 04:38:22,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:22,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 04:38:22,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602451811] [2020-10-27 04:38:22,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:38:22,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:22,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:38:22,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:38:22,604 INFO L87 Difference]: Start difference. First operand 169 states and 268 transitions. Second operand 12 states. [2020-10-27 04:38:23,232 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:23,554 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:38:23,948 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:38:24,240 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:26,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:26,012 INFO L93 Difference]: Finished difference Result 296 states and 462 transitions. [2020-10-27 04:38:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:38:26,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-27 04:38:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:26,016 INFO L225 Difference]: With dead ends: 296 [2020-10-27 04:38:26,016 INFO L226 Difference]: Without dead ends: 187 [2020-10-27 04:38:26,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:38:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-27 04:38:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2020-10-27 04:38:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-27 04:38:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 244 transitions. [2020-10-27 04:38:26,067 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 244 transitions. Word has length 66 [2020-10-27 04:38:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:26,067 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 244 transitions. [2020-10-27 04:38:26,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:38:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 244 transitions. [2020-10-27 04:38:26,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:38:26,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:26,074 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 04:38:26,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:38:26,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:26,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:26,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1061925819, now seen corresponding path program 1 times [2020-10-27 04:38:26,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:26,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587521582] [2020-10-27 04:38:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:26,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:26,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:38:31,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:38:31,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:38:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:38:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 04:38:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:31,454 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:31,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:31,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:31,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:38:31,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:31,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:31,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:31,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:38:31,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 04:38:31,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:38:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:38:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:31,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:38:31,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:31,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:38:31,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:31,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:38:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:31,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:38:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:31,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:38:31,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:38:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:38:31,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:38:31,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:38:31,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:38:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:31,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:31,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:31,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:31,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:31,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:38:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:31,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:31,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:38:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:31,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:31,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:31,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:31,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:31,817 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 04:38:31,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587521582] [2020-10-27 04:38:31,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:31,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:38:31,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796709365] [2020-10-27 04:38:31,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:38:31,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:31,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:38:31,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:31,820 INFO L87 Difference]: Start difference. First operand 169 states and 244 transitions. Second operand 9 states. [2020-10-27 04:38:32,116 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:34,296 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:38:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:34,865 INFO L93 Difference]: Finished difference Result 421 states and 633 transitions. [2020-10-27 04:38:34,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:38:34,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 04:38:34,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:34,873 INFO L225 Difference]: With dead ends: 421 [2020-10-27 04:38:34,873 INFO L226 Difference]: Without dead ends: 318 [2020-10-27 04:38:34,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:38:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-27 04:38:34,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 272. [2020-10-27 04:38:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-27 04:38:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 398 transitions. [2020-10-27 04:38:34,921 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 398 transitions. Word has length 89 [2020-10-27 04:38:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:34,922 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 398 transitions. [2020-10-27 04:38:34,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:38:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 398 transitions. [2020-10-27 04:38:34,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:38:34,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:34,925 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 04:38:34,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:38:34,926 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:34,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:34,926 INFO L82 PathProgramCache]: Analyzing trace with hash -636714810, now seen corresponding path program 1 times [2020-10-27 04:38:34,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:34,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592961859] [2020-10-27 04:38:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:35,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:39,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:39,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:38:39,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:38:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:38:39,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:38:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 04:38:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:40,246 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:40,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:40,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:38:40,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:38:40,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 04:38:40,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:40,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:38:40,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:38:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:38:40,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:38:40,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:40,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:38:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:38:40,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:38:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:38:40,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:38:40,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:38:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:38:40,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:38:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:40,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:38:40,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:40,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:38:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:40,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:40,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:38:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:40,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:40,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:40,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:40,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:40,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:40,653 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 04:38:40,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592961859] [2020-10-27 04:38:40,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:40,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:38:40,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296434401] [2020-10-27 04:38:40,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:38:40,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:40,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:38:40,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:40,658 INFO L87 Difference]: Start difference. First operand 272 states and 398 transitions. Second operand 9 states. [2020-10-27 04:38:40,911 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:41,205 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:38:41,515 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:38:42,439 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:38:43,086 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:46,421 INFO L93 Difference]: Finished difference Result 982 states and 1438 transitions. [2020-10-27 04:38:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:38:46,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 04:38:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:46,436 INFO L225 Difference]: With dead ends: 982 [2020-10-27 04:38:46,437 INFO L226 Difference]: Without dead ends: 741 [2020-10-27 04:38:46,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:38:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-10-27 04:38:46,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 663. [2020-10-27 04:38:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2020-10-27 04:38:46,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 960 transitions. [2020-10-27 04:38:46,553 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 960 transitions. Word has length 91 [2020-10-27 04:38:46,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:46,553 INFO L481 AbstractCegarLoop]: Abstraction has 663 states and 960 transitions. [2020-10-27 04:38:46,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:38:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 960 transitions. [2020-10-27 04:38:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 04:38:46,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:46,567 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 04:38:46,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:38:46,568 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:46,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2077974061, now seen corresponding path program 1 times [2020-10-27 04:38:46,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:46,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068272509] [2020-10-27 04:38:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:46,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:47,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:38:51,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:38:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:38:51,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:38:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 04:38:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,935 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:38:51,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:38:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:51,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:51,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:38:51,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:51,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:38:51,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:51,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:51,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:38:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:51,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:52,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:52,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:38:52,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:38:52,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:38:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:38:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:38:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:52,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:38:52,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:38:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:38:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:38:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:52,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:38:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:52,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:52,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:38:52,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:38:52,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:38:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:38:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:52,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:38:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:52,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:52,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:52,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:38:52,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:52,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:52,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:52,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:38:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:52,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:52,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:38:52,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:38:52,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:38:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:52,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:52,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 04:38:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:52,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:38:52,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:38:52,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:38:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:38:52,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:38:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:38:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:38:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:38:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:38:52,313 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 04:38:52,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068272509] [2020-10-27 04:38:52,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:38:52,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:38:52,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441357688] [2020-10-27 04:38:52,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:38:52,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:38:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:38:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:38:52,316 INFO L87 Difference]: Start difference. First operand 663 states and 960 transitions. Second operand 9 states. [2020-10-27 04:38:52,549 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:38:52,864 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:38:53,198 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:38:53,996 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:38:54,799 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:38:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:38:57,715 INFO L93 Difference]: Finished difference Result 2545 states and 3713 transitions. [2020-10-27 04:38:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:38:57,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-27 04:38:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:38:57,740 INFO L225 Difference]: With dead ends: 2545 [2020-10-27 04:38:57,741 INFO L226 Difference]: Without dead ends: 1916 [2020-10-27 04:38:57,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:38:57,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2020-10-27 04:38:57,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1736. [2020-10-27 04:38:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-10-27 04:38:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2495 transitions. [2020-10-27 04:38:57,926 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2495 transitions. Word has length 92 [2020-10-27 04:38:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:38:57,929 INFO L481 AbstractCegarLoop]: Abstraction has 1736 states and 2495 transitions. [2020-10-27 04:38:57,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:38:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2495 transitions. [2020-10-27 04:38:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:38:57,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:38:57,935 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 04:38:57,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:38:57,936 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:38:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:38:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash -299657205, now seen corresponding path program 1 times [2020-10-27 04:38:57,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:38:57,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833183579] [2020-10-27 04:38:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:38:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:38:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:58,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:38:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:02,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:39:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:39:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:39:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:39:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 04:39:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,257 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:39:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:03,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:03,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:03,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:39:03,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:39:03,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:39:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:03,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:03,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:03,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:03,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:39:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:03,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:39:03,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:39:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:03,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:39:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:39:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:39:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:39:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:39:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:03,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:03,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:03,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:03,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:03,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:03,558 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 04:39:03,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833183579] [2020-10-27 04:39:03,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:03,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:03,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748171149] [2020-10-27 04:39:03,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:03,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:03,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:03,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:03,561 INFO L87 Difference]: Start difference. First operand 1736 states and 2495 transitions. Second operand 9 states. [2020-10-27 04:39:03,838 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:06,468 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:39:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:06,880 INFO L93 Difference]: Finished difference Result 4370 states and 6465 transitions. [2020-10-27 04:39:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:39:06,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-27 04:39:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:06,902 INFO L225 Difference]: With dead ends: 4370 [2020-10-27 04:39:06,903 INFO L226 Difference]: Without dead ends: 3091 [2020-10-27 04:39:06,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:39:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2020-10-27 04:39:07,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2718. [2020-10-27 04:39:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2718 states. [2020-10-27 04:39:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 3944 transitions. [2020-10-27 04:39:07,183 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 3944 transitions. Word has length 93 [2020-10-27 04:39:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:07,185 INFO L481 AbstractCegarLoop]: Abstraction has 2718 states and 3944 transitions. [2020-10-27 04:39:07,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 3944 transitions. [2020-10-27 04:39:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:39:07,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:07,193 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 04:39:07,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:39:07,194 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:07,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1503724896, now seen corresponding path program 1 times [2020-10-27 04:39:07,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:07,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018419711] [2020-10-27 04:39:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:07,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 04:39:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:39:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:39:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:39:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:12,590 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:12,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:39:12,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:12,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 04:39:12,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:12,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:12,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:39:12,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:39:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:12,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:39:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:12,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:39:12,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:12,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:39:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:39:12,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:39:12,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:39:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:12,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:39:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:12,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:12,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:12,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:39:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:12,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:12,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:39:13,029 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 04:39:13,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018419711] [2020-10-27 04:39:13,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:13,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:13,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106990597] [2020-10-27 04:39:13,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:13,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:13,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:13,040 INFO L87 Difference]: Start difference. First operand 2718 states and 3944 transitions. Second operand 9 states. [2020-10-27 04:39:13,346 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:13,593 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:39:13,918 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:39:14,208 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:14,966 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:17,886 INFO L93 Difference]: Finished difference Result 8325 states and 12213 transitions. [2020-10-27 04:39:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:39:17,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:39:17,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:17,917 INFO L225 Difference]: With dead ends: 8325 [2020-10-27 04:39:17,918 INFO L226 Difference]: Without dead ends: 5657 [2020-10-27 04:39:17,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:39:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2020-10-27 04:39:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 5156. [2020-10-27 04:39:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5156 states. [2020-10-27 04:39:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7370 transitions. [2020-10-27 04:39:18,383 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7370 transitions. Word has length 95 [2020-10-27 04:39:18,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:18,383 INFO L481 AbstractCegarLoop]: Abstraction has 5156 states and 7370 transitions. [2020-10-27 04:39:18,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7370 transitions. [2020-10-27 04:39:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:39:18,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:18,397 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] [2020-10-27 04:39:18,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:39:18,397 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:18,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash 738212835, now seen corresponding path program 1 times [2020-10-27 04:39:18,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:18,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611723976] [2020-10-27 04:39:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:18,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:18,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 04:39:23,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:39:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:39:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 04:39:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:23,720 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:23,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:23,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:23,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:23,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:39:23,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:23,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:23,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:23,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:23,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:39:23,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 04:39:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:23,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:39:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:23,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:23,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:23,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:39:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:23,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:23,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:23,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:39:23,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:23,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:23,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:39:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:23,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:23,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:39:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:39:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:39:23,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:39:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:24,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:39:24,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:39:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:39:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:24,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:24,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:39:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:24,105 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 04:39:24,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611723976] [2020-10-27 04:39:24,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:24,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:24,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468438954] [2020-10-27 04:39:24,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:24,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:24,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:24,109 INFO L87 Difference]: Start difference. First operand 5156 states and 7370 transitions. Second operand 9 states. [2020-10-27 04:39:24,400 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:24,720 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 04:39:25,098 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-27 04:39:25,681 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 192 [2020-10-27 04:39:26,702 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:30,532 INFO L93 Difference]: Finished difference Result 17390 states and 25254 transitions. [2020-10-27 04:39:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:39:30,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-27 04:39:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:30,609 INFO L225 Difference]: With dead ends: 17390 [2020-10-27 04:39:30,609 INFO L226 Difference]: Without dead ends: 12776 [2020-10-27 04:39:30,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:39:30,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12776 states. [2020-10-27 04:39:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12776 to 11668. [2020-10-27 04:39:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11668 states. [2020-10-27 04:39:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11668 states to 11668 states and 16552 transitions. [2020-10-27 04:39:31,729 INFO L78 Accepts]: Start accepts. Automaton has 11668 states and 16552 transitions. Word has length 96 [2020-10-27 04:39:31,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:31,729 INFO L481 AbstractCegarLoop]: Abstraction has 11668 states and 16552 transitions. [2020-10-27 04:39:31,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 11668 states and 16552 transitions. [2020-10-27 04:39:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-27 04:39:31,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:31,753 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 04:39:31,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:39:31,754 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash 529559611, now seen corresponding path program 1 times [2020-10-27 04:39:31,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:31,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121794112] [2020-10-27 04:39:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:31,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:32,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:36,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:36,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 04:39:36,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:39:36,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:39:36,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:36,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:36,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:39:36,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:39:36,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,072 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:37,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:37,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:39:37,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:37,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:39:37,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:39:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:39:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:37,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:37,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:37,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:37,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:37,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:37,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:37,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:39:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:37,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:37,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:37,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:39:37,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:37,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:37,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:39:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:37,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:37,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:39:37,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:37,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:39:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:37,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:39:37,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:39:37,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:39:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:39:37,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:39:37,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 04:39:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:37,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:37,376 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 04:39:37,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121794112] [2020-10-27 04:39:37,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:37,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:37,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473074216] [2020-10-27 04:39:37,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:37,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:37,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:37,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:37,378 INFO L87 Difference]: Start difference. First operand 11668 states and 16552 transitions. Second operand 9 states. [2020-10-27 04:39:37,640 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:38,280 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 04:39:41,054 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:39:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:41,550 INFO L93 Difference]: Finished difference Result 30239 states and 43366 transitions. [2020-10-27 04:39:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:39:41,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-27 04:39:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:41,657 INFO L225 Difference]: With dead ends: 30239 [2020-10-27 04:39:41,657 INFO L226 Difference]: Without dead ends: 20387 [2020-10-27 04:39:41,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:39:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20387 states. [2020-10-27 04:39:43,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20387 to 18387. [2020-10-27 04:39:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18387 states. [2020-10-27 04:39:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18387 states to 18387 states and 25953 transitions. [2020-10-27 04:39:43,473 INFO L78 Accepts]: Start accepts. Automaton has 18387 states and 25953 transitions. Word has length 97 [2020-10-27 04:39:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:39:43,474 INFO L481 AbstractCegarLoop]: Abstraction has 18387 states and 25953 transitions. [2020-10-27 04:39:43,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:39:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 18387 states and 25953 transitions. [2020-10-27 04:39:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:39:43,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:39:43,498 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 04:39:43,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:39:43,498 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:39:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:39:43,499 INFO L82 PathProgramCache]: Analyzing trace with hash -441844666, now seen corresponding path program 1 times [2020-10-27 04:39:43,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:39:43,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397198920] [2020-10-27 04:39:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:39:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:43,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 04:39:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:48,811 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:39:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:39:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:48,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:48,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:48,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:39:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:48,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:39:48,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:39:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:39:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:39:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:39:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:48,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:48,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:39:48,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:39:48,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:39:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:48,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:39:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:48,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:48,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:48,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:39:48,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:39:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:39:49,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:39:49,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:39:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:39:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:39:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:39:49,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:39:49,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:39:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:39:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:39:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 04:39:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:39:49,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:39:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:39:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:39:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:39:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:39:49,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:39:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:39:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:39:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:39:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:39:49,128 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 04:39:49,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397198920] [2020-10-27 04:39:49,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:39:49,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:39:49,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928319152] [2020-10-27 04:39:49,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:39:49,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:39:49,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:39:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:39:49,129 INFO L87 Difference]: Start difference. First operand 18387 states and 25953 transitions. Second operand 9 states. [2020-10-27 04:39:49,429 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:39:49,746 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 04:39:50,333 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-10-27 04:39:50,644 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-27 04:39:51,712 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:39:52,147 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 04:39:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:39:57,170 INFO L93 Difference]: Finished difference Result 62110 states and 88654 transitions. [2020-10-27 04:39:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:39:57,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-27 04:39:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:39:57,375 INFO L225 Difference]: With dead ends: 62110 [2020-10-27 04:39:57,375 INFO L226 Difference]: Without dead ends: 44767 [2020-10-27 04:39:57,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:39:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44767 states. [2020-10-27 04:40:01,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44767 to 41751. [2020-10-27 04:40:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41751 states. [2020-10-27 04:40:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41751 states to 41751 states and 58085 transitions. [2020-10-27 04:40:01,194 INFO L78 Accepts]: Start accepts. Automaton has 41751 states and 58085 transitions. Word has length 99 [2020-10-27 04:40:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:01,194 INFO L481 AbstractCegarLoop]: Abstraction has 41751 states and 58085 transitions. [2020-10-27 04:40:01,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 41751 states and 58085 transitions. [2020-10-27 04:40:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 04:40:01,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:01,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:01,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:40:01,355 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:01,356 INFO L82 PathProgramCache]: Analyzing trace with hash 706408592, now seen corresponding path program 1 times [2020-10-27 04:40:01,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:01,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076578296] [2020-10-27 04:40:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:01,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 04:40:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,656 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:06,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:06,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:06,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 04:40:06,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 04:40:06,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:40:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 04:40:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:06,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:06,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:40:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:06,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:40:06,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:06,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:40:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:06,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:40:06,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:06,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:06,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:40:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:06,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:40:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:40:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 04:40:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:06,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:06,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:06,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:06,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:06,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:06,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:06,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:06,942 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 04:40:06,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076578296] [2020-10-27 04:40:06,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:06,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:06,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632758436] [2020-10-27 04:40:06,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:06,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:06,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:06,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:06,944 INFO L87 Difference]: Start difference. First operand 41751 states and 58085 transitions. Second operand 9 states. [2020-10-27 04:40:07,222 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:07,486 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:07,899 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-27 04:40:08,191 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:08,994 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:15,521 INFO L93 Difference]: Finished difference Result 122231 states and 171155 transitions. [2020-10-27 04:40:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:40:15,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-27 04:40:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:16,084 INFO L225 Difference]: With dead ends: 122231 [2020-10-27 04:40:16,085 INFO L226 Difference]: Without dead ends: 81016 [2020-10-27 04:40:16,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81016 states. [2020-10-27 04:40:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81016 to 76349. [2020-10-27 04:40:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76349 states. [2020-10-27 04:40:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76349 states to 76349 states and 103976 transitions. [2020-10-27 04:40:22,343 INFO L78 Accepts]: Start accepts. Automaton has 76349 states and 103976 transitions. Word has length 100 [2020-10-27 04:40:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:22,343 INFO L481 AbstractCegarLoop]: Abstraction has 76349 states and 103976 transitions. [2020-10-27 04:40:22,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 76349 states and 103976 transitions. [2020-10-27 04:40:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:40:22,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:22,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:22,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:40:22,390 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1679813779, now seen corresponding path program 1 times [2020-10-27 04:40:22,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:22,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933452997] [2020-10-27 04:40:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:22,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:22,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:22,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:24,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:27,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 04:40:27,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:40:27,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:40:27,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:27,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:40:27,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 04:40:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:27,695 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:27,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:27,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:27,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 04:40:27,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:40:27,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:40:27,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:40:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:27,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:27,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 04:40:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:27,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:40:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:27,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:27,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:40:27,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:27,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:27,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:40:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:40:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:28,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:40:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:28,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:28,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:40:28,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:40:28,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:40:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:28,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:40:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:28,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:28,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:28,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:40:28,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:40:28,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:28,067 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 04:40:28,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933452997] [2020-10-27 04:40:28,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:28,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:40:28,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307445987] [2020-10-27 04:40:28,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:40:28,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:28,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:40:28,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:40:28,069 INFO L87 Difference]: Start difference. First operand 76349 states and 103976 transitions. Second operand 9 states. [2020-10-27 04:40:28,371 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:28,636 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:28,950 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:40:29,219 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:40:30,221 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:40:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:40:36,622 INFO L93 Difference]: Finished difference Result 112824 states and 153459 transitions. [2020-10-27 04:40:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:40:36,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-27 04:40:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:40:36,895 INFO L225 Difference]: With dead ends: 112824 [2020-10-27 04:40:36,896 INFO L226 Difference]: Without dead ends: 80442 [2020-10-27 04:40:36,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:40:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80442 states. [2020-10-27 04:40:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80442 to 73038. [2020-10-27 04:40:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73038 states. [2020-10-27 04:40:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73038 states to 73038 states and 99014 transitions. [2020-10-27 04:40:42,085 INFO L78 Accepts]: Start accepts. Automaton has 73038 states and 99014 transitions. Word has length 101 [2020-10-27 04:40:42,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:40:42,085 INFO L481 AbstractCegarLoop]: Abstraction has 73038 states and 99014 transitions. [2020-10-27 04:40:42,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:40:42,085 INFO L276 IsEmpty]: Start isEmpty. Operand 73038 states and 99014 transitions. [2020-10-27 04:40:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:40:42,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:40:42,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:40:42,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:40:42,125 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:40:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:40:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1685956782, now seen corresponding path program 1 times [2020-10-27 04:40:42,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:40:42,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231252332] [2020-10-27 04:40:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:40:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:42,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 04:40:45,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:40:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3368 [2020-10-27 04:40:45,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:40:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 04:40:45,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:40:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:45,795 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:40:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:40:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:40:45,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:40:45,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:40:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:45,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:40:45,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:45,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:40:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 04:40:45,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 04:40:45,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:40:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:40:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:40:45,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:40:45,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:40:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:40:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:40:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:45,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:45,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:45,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:40:45,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:40:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:40:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:40:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:40:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:40:46,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:40:46,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:40:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:40:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:40:46,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:40:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:40:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:40:46,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:40:46,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:40:46,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:40:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:40:46,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:40:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:40:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 04:40:46,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:40:46,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:40:46,204 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 04:40:46,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231252332] [2020-10-27 04:40:46,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:40:46,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 04:40:46,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314411306] [2020-10-27 04:40:46,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:40:46,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:40:46,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:40:46,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:40:46,207 INFO L87 Difference]: Start difference. First operand 73038 states and 99014 transitions. Second operand 13 states. [2020-10-27 04:40:46,465 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:46,994 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:40:47,246 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:40:50,157 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:40:50,465 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-27 04:40:50,736 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:41:07,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:41:07,956 INFO L93 Difference]: Finished difference Result 370212 states and 510846 transitions. [2020-10-27 04:41:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 04:41:07,956 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-10-27 04:41:07,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:41:09,755 INFO L225 Difference]: With dead ends: 370212 [2020-10-27 04:41:09,756 INFO L226 Difference]: Without dead ends: 304366 [2020-10-27 04:41:09,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 04:41:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304366 states. [2020-10-27 04:41:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304366 to 283772. [2020-10-27 04:41:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283772 states. [2020-10-27 04:41:28,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283772 states to 283772 states and 391535 transitions. [2020-10-27 04:41:28,146 INFO L78 Accepts]: Start accepts. Automaton has 283772 states and 391535 transitions. Word has length 101 [2020-10-27 04:41:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:41:28,150 INFO L481 AbstractCegarLoop]: Abstraction has 283772 states and 391535 transitions. [2020-10-27 04:41:28,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:41:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 283772 states and 391535 transitions. [2020-10-27 04:41:28,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 04:41:28,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:41:28,290 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] [2020-10-27 04:41:28,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:41:28,290 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:41:28,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:41:28,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1027914440, now seen corresponding path program 1 times [2020-10-27 04:41:28,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:41:28,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033763580] [2020-10-27 04:41:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:41:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:28,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:41:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:33,600 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:41:33,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:41:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:33,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:41:33,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:41:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:41:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:41:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:41:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:33,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 04:41:33,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:41:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:41:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 04:41:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:33,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 04:41:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:41:33,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:41:33,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:41:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 04:41:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:33,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:41:33,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:41:33,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:41:33,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:41:33,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:33,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:41:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:41:33,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:41:33,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:33,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:41:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:33,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 04:41:33,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:41:33,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:41:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:41:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:41:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:41:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:41:33,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:41:33,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 04:41:33,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:41:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:41:33,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:41:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:41:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:41:33,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:41:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:41:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:41:34,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033763580] [2020-10-27 04:41:34,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:41:34,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:41:34,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514758338] [2020-10-27 04:41:34,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:41:34,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:41:34,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:41:34,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:41:34,043 INFO L87 Difference]: Start difference. First operand 283772 states and 391535 transitions. Second operand 10 states. [2020-10-27 04:41:34,374 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 04:41:34,937 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186