/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-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:09:35,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:09:35,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:09:35,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:09:35,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:09:35,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:09:35,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:09:35,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:09:35,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:09:35,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:09:35,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:09:35,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:09:35,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:09:35,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:09:35,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:09:35,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:09:35,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:09:35,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:09:35,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:09:35,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:09:35,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:09:35,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:09:35,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:09:35,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:09:35,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:09:35,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:09:35,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:09:35,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:09:35,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:09:35,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:09:35,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:09:35,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:09:35,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:09:35,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:09:35,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:09:35,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:09:35,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:09:35,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:09:35,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:09:35,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:09:35,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:09:35,428 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 06:09:35,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:09:35,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:09:35,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:09:35,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:09:35,458 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:09:35,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:09:35,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:09:35,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:09:35,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:09:35,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:09:35,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:09:35,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:09:35,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:09:35,460 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:09:35,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:09:35,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:09:35,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:09:35,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:09:35,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:09:35,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:09:35,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:09:35,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:09:35,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:09:35,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:09:35,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:09:35,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:09:35,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:09:35,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:09:35,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:09:35,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:09:35,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:09:35,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:09:35,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:09:35,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:09:35,897 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:09:35,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 06:09:35,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d8d86ff/5f96924040a14d7e8d54d693c63dba9a/FLAG32a000da0 [2020-10-27 06:09:37,015 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:09:37,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 06:09:37,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d8d86ff/5f96924040a14d7e8d54d693c63dba9a/FLAG32a000da0 [2020-10-27 06:09:37,540 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26d8d86ff/5f96924040a14d7e8d54d693c63dba9a [2020-10-27 06:09:37,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:09:37,549 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:09:37,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:09:37,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:09:37,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:09:37,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:37" (1/1) ... [2020-10-27 06:09:37,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c4053e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:37, skipping insertion in model container [2020-10-27 06:09:37,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:37" (1/1) ... [2020-10-27 06:09:37,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:09:37,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:09:39,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:09:39,438 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:09:40,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:09:40,411 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:09:40,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40 WrapperNode [2020-10-27 06:09:40,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:09:40,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:09:40,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:09:40,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:09:40,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (1/1) ... [2020-10-27 06:09:40,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (1/1) ... [2020-10-27 06:09:40,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (1/1) ... [2020-10-27 06:09:40,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (1/1) ... [2020-10-27 06:09:40,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (1/1) ... [2020-10-27 06:09:40,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (1/1) ... [2020-10-27 06:09:40,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (1/1) ... [2020-10-27 06:09:40,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:09:40,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:09:40,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:09:40,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:09:40,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (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 06:09:40,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:09:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:09:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:09:40,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:09:40,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:09:40,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:09:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:09:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:09:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:09:40,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:09:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:09:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:09:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:09:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:09:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:09:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:09:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:09:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:09:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:09:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 06:09:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:09:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:09:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:09:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:09:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:09:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:09:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:09:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:09:40,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:09:45,696 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:09:45,698 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:09:45,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:45 BoogieIcfgContainer [2020-10-27 06:09:45,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:09:45,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:09:45,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:09:45,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:09:45,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:09:37" (1/3) ... [2020-10-27 06:09:45,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e3b3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:09:45, skipping insertion in model container [2020-10-27 06:09:45,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:40" (2/3) ... [2020-10-27 06:09:45,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e3b3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:09:45, skipping insertion in model container [2020-10-27 06:09:45,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:45" (3/3) ... [2020-10-27 06:09:45,712 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-27 06:09:45,724 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:09:45,731 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:09:45,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:09:45,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:09:45,781 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:09:45,781 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:09:45,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:09:45,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:09:45,782 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:09:45,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:09:45,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:09:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states. [2020-10-27 06:09:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-27 06:09:45,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:45,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:45,883 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:45,890 INFO L82 PathProgramCache]: Analyzing trace with hash -937803504, now seen corresponding path program 1 times [2020-10-27 06:09:45,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:45,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487858384] [2020-10-27 06:09:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:48,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:52,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:52,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:52,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-27 06:09:52,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:09:52,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5190 [2020-10-27 06:09:52,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:52,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:52,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:09:52,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:09:54,453 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 433 [2020-10-27 06:09:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:54,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:54,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:54,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:54,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 06:09:54,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:54,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:54,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:54,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:55,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487858384] [2020-10-27 06:09:55,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:55,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:55,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553621667] [2020-10-27 06:09:55,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:55,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:55,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:55,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:55,363 INFO L87 Difference]: Start difference. First operand 1435 states. Second operand 5 states. [2020-10-27 06:10:12,540 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 439 [2020-10-27 06:10:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:16,183 INFO L93 Difference]: Finished difference Result 4237 states and 7630 transitions. [2020-10-27 06:10:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:10:16,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 488 [2020-10-27 06:10:16,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:16,237 INFO L225 Difference]: With dead ends: 4237 [2020-10-27 06:10:16,237 INFO L226 Difference]: Without dead ends: 2813 [2020-10-27 06:10:16,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2020-10-27 06:10:16,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2810. [2020-10-27 06:10:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2810 states. [2020-10-27 06:10:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 4634 transitions. [2020-10-27 06:10:16,535 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 4634 transitions. Word has length 488 [2020-10-27 06:10:16,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:16,543 INFO L481 AbstractCegarLoop]: Abstraction has 2810 states and 4634 transitions. [2020-10-27 06:10:16,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 4634 transitions. [2020-10-27 06:10:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-27 06:10:16,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:16,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:16,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:10:16,566 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:16,567 INFO L82 PathProgramCache]: Analyzing trace with hash -122661664, now seen corresponding path program 1 times [2020-10-27 06:10:16,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:16,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096201506] [2020-10-27 06:10:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:21,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:21,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-27 06:10:21,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:10:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-27 06:10:21,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:21,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 06:10:21,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:23,653 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 433 [2020-10-27 06:10:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:23,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:23,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:23,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:23,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 06:10:23,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:23,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:24,333 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 06:10:24,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096201506] [2020-10-27 06:10:24,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:24,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:24,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501664377] [2020-10-27 06:10:24,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:24,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:24,350 INFO L87 Difference]: Start difference. First operand 2810 states and 4634 transitions. Second operand 5 states. [2020-10-27 06:10:39,753 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 439 [2020-10-27 06:10:43,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:43,012 INFO L93 Difference]: Finished difference Result 8335 states and 13744 transitions. [2020-10-27 06:10:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:43,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 490 [2020-10-27 06:10:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:43,043 INFO L225 Difference]: With dead ends: 8335 [2020-10-27 06:10:43,044 INFO L226 Difference]: Without dead ends: 5549 [2020-10-27 06:10:43,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:43,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5549 states. [2020-10-27 06:10:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5549 to 5546. [2020-10-27 06:10:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5546 states. [2020-10-27 06:10:43,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5546 states to 5546 states and 9109 transitions. [2020-10-27 06:10:43,335 INFO L78 Accepts]: Start accepts. Automaton has 5546 states and 9109 transitions. Word has length 490 [2020-10-27 06:10:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:43,336 INFO L481 AbstractCegarLoop]: Abstraction has 5546 states and 9109 transitions. [2020-10-27 06:10:43,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5546 states and 9109 transitions. [2020-10-27 06:10:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-27 06:10:43,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:43,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:10:43,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:10:43,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:43,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1431175980, now seen corresponding path program 1 times [2020-10-27 06:10:43,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:43,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566774039] [2020-10-27 06:10:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:43,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:44,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:45,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:46,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:48,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:48,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-27 06:10:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:10:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 06:10:48,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 06:10:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:50,097 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 433 [2020-10-27 06:10:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:50,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:50,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:50,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:50,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:50,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 06:10:50,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:50,587 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 06:10:50,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566774039] [2020-10-27 06:10:50,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:50,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:50,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550758543] [2020-10-27 06:10:50,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:50,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:50,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:50,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:50,591 INFO L87 Difference]: Start difference. First operand 5546 states and 9109 transitions. Second operand 5 states. [2020-10-27 06:11:05,219 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 439 [2020-10-27 06:11:08,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:08,808 INFO L93 Difference]: Finished difference Result 16148 states and 26463 transitions. [2020-10-27 06:11:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:11:08,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-27 06:11:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:08,863 INFO L225 Difference]: With dead ends: 16148 [2020-10-27 06:11:08,863 INFO L226 Difference]: Without dead ends: 10825 [2020-10-27 06:11:08,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2020-10-27 06:11:09,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 10822. [2020-10-27 06:11:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10822 states. [2020-10-27 06:11:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10822 states to 10822 states and 17669 transitions. [2020-10-27 06:11:09,496 INFO L78 Accepts]: Start accepts. Automaton has 10822 states and 17669 transitions. Word has length 493 [2020-10-27 06:11:09,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:09,496 INFO L481 AbstractCegarLoop]: Abstraction has 10822 states and 17669 transitions. [2020-10-27 06:11:09,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 10822 states and 17669 transitions. [2020-10-27 06:11:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-27 06:11:09,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:09,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:09,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:11:09,527 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:09,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:09,529 INFO L82 PathProgramCache]: Analyzing trace with hash 132732244, now seen corresponding path program 1 times [2020-10-27 06:11:09,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:09,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079285631] [2020-10-27 06:11:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:09,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:09,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:12,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:12,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:14,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:14,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-27 06:11:14,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:11:14,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 06:11:14,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:14,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-27 06:11:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:16,384 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 433 [2020-10-27 06:11:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:16,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:16,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:16,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 06:11:16,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:16,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:16,786 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 06:11:16,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079285631] [2020-10-27 06:11:16,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:16,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:16,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801724846] [2020-10-27 06:11:16,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:16,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:16,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:16,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:16,789 INFO L87 Difference]: Start difference. First operand 10822 states and 17669 transitions. Second operand 5 states. [2020-10-27 06:11:31,096 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 439 [2020-10-27 06:11:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:34,741 INFO L93 Difference]: Finished difference Result 32214 states and 52589 transitions. [2020-10-27 06:11:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:11:34,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 495 [2020-10-27 06:11:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:34,811 INFO L225 Difference]: With dead ends: 32214 [2020-10-27 06:11:34,811 INFO L226 Difference]: Without dead ends: 21414 [2020-10-27 06:11:34,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21414 states. [2020-10-27 06:11:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21414 to 21411. [2020-10-27 06:11:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21411 states. [2020-10-27 06:11:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21411 states to 21411 states and 34808 transitions. [2020-10-27 06:11:35,833 INFO L78 Accepts]: Start accepts. Automaton has 21411 states and 34808 transitions. Word has length 495 [2020-10-27 06:11:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:35,834 INFO L481 AbstractCegarLoop]: Abstraction has 21411 states and 34808 transitions. [2020-10-27 06:11:35,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 21411 states and 34808 transitions. [2020-10-27 06:11:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-27 06:11:35,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:35,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:11:35,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:11:35,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:35,973 INFO L82 PathProgramCache]: Analyzing trace with hash 677542520, now seen corresponding path program 1 times [2020-10-27 06:11:35,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:35,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543233337] [2020-10-27 06:11:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:36,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:37,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:37,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:41,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-27 06:11:41,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:11:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5189 [2020-10-27 06:11:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-27 06:11:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:42,778 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 433 [2020-10-27 06:11:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:42,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:42,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:42,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 06:11:42,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:42,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:43,209 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 06:11:43,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543233337] [2020-10-27 06:11:43,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:43,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:43,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943068272] [2020-10-27 06:11:43,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:43,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:43,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:43,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:43,212 INFO L87 Difference]: Start difference. First operand 21411 states and 34808 transitions. Second operand 5 states. [2020-10-27 06:11:57,668 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 439 [2020-10-27 06:12:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:01,325 INFO L93 Difference]: Finished difference Result 62716 states and 101775 transitions. [2020-10-27 06:12:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:01,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 499 [2020-10-27 06:12:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:01,426 INFO L225 Difference]: With dead ends: 62716 [2020-10-27 06:12:01,427 INFO L226 Difference]: Without dead ends: 41981 [2020-10-27 06:12:01,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41981 states. [2020-10-27 06:12:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41981 to 41978. [2020-10-27 06:12:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41978 states. [2020-10-27 06:12:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41978 states to 41978 states and 67855 transitions. [2020-10-27 06:12:03,825 INFO L78 Accepts]: Start accepts. Automaton has 41978 states and 67855 transitions. Word has length 499 [2020-10-27 06:12:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:03,826 INFO L481 AbstractCegarLoop]: Abstraction has 41978 states and 67855 transitions. [2020-10-27 06:12:03,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 41978 states and 67855 transitions. [2020-10-27 06:12:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2020-10-27 06:12:03,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:03,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:03,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:12:03,930 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:03,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:03,930 INFO L82 PathProgramCache]: Analyzing trace with hash 484661940, now seen corresponding path program 1 times [2020-10-27 06:12:03,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:03,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295182036] [2020-10-27 06:12:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:04,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:05,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:09,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:09,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-27 06:12:09,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:12:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-27 06:12:09,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:09,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-27 06:12:09,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:10,659 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 433 [2020-10-27 06:12:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:10,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:10,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:10,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:10,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:10,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 06:12:10,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:10,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:11,331 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 06:12:11,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295182036] [2020-10-27 06:12:11,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:11,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:11,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869582498] [2020-10-27 06:12:11,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:11,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:11,335 INFO L87 Difference]: Start difference. First operand 41978 states and 67855 transitions. Second operand 5 states. [2020-10-27 06:12:30,931 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 439 [2020-10-27 06:12:35,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:35,787 INFO L93 Difference]: Finished difference Result 123380 states and 199167 transitions. [2020-10-27 06:12:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:35,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 503 [2020-10-27 06:12:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:36,059 INFO L225 Difference]: With dead ends: 123380 [2020-10-27 06:12:36,060 INFO L226 Difference]: Without dead ends: 82745 [2020-10-27 06:12:36,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82745 states. [2020-10-27 06:12:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82745 to 82742. [2020-10-27 06:12:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82742 states. [2020-10-27 06:12:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82742 states to 82742 states and 133139 transitions. [2020-10-27 06:12:40,580 INFO L78 Accepts]: Start accepts. Automaton has 82742 states and 133139 transitions. Word has length 503 [2020-10-27 06:12:40,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:12:40,580 INFO L481 AbstractCegarLoop]: Abstraction has 82742 states and 133139 transitions. [2020-10-27 06:12:40,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:12:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 82742 states and 133139 transitions. [2020-10-27 06:12:40,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-27 06:12:40,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:12:40,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:12:40,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:12:40,705 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:12:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:12:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash -26062870, now seen corresponding path program 1 times [2020-10-27 06:12:40,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:12:40,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195190926] [2020-10-27 06:12:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:12:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:40,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:41,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:41,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:42,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-27 06:12:45,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:12:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 06:12:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:12:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:12:45,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 06:12:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:47,528 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 433 [2020-10-27 06:12:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:12:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:12:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:12:47,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:12:47,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:12:47,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:12:47,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:12:47,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:12:47,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:12:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:12:47,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:12:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:12:47,982 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 06:12:47,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195190926] [2020-10-27 06:12:47,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:12:47,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:12:47,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487448893] [2020-10-27 06:12:47,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:12:47,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:12:47,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:12:47,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:12:47,986 INFO L87 Difference]: Start difference. First operand 82742 states and 133139 transitions. Second operand 5 states.