/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:15:03,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:15:03,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:15:03,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:15:03,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:15:03,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:15:03,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:15:03,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:15:03,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:15:03,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:15:03,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:15:03,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:15:03,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:15:03,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:15:03,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:15:03,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:15:03,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:15:03,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:15:03,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:15:03,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:15:03,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:15:03,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:15:03,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:15:03,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:15:03,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:15:03,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:15:03,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:15:03,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:15:03,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:15:03,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:15:03,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:15:03,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:15:03,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:15:03,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:15:03,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:15:03,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:15:03,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:15:03,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:15:03,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:15:03,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:15:03,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:15:03,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:15:03,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:15:03,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:15:03,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:15:03,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:15:03,799 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:15:03,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:15:03,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:15:03,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:15:03,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:15:03,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:15:03,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:15:03,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:15:03,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:15:03,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:15:03,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:15:03,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:15:03,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:15:03,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:15:03,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:15:03,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:15:03,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:15:03,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:15:03,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:15:03,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:15:03,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:15:03,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:15:03,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:15:03,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:15:03,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:15:03,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:15:04,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:15:04,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:15:04,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:15:04,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:15:04,207 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:15:04,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c [2020-10-27 23:15:04,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/219e58993/36a2de0c0b414d8394c41a069bac0154/FLAG12a9054f2 [2020-10-27 23:15:05,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:15:05,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c [2020-10-27 23:15:05,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/219e58993/36a2de0c0b414d8394c41a069bac0154/FLAG12a9054f2 [2020-10-27 23:15:05,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/219e58993/36a2de0c0b414d8394c41a069bac0154 [2020-10-27 23:15:05,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:15:05,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:15:05,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:15:05,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:15:05,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:15:05,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:15:05" (1/1) ... [2020-10-27 23:15:05,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2045b64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:05, skipping insertion in model container [2020-10-27 23:15:05,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:15:05" (1/1) ... [2020-10-27 23:15:05,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:15:05,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:15:05,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:15:05,901 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:15:06,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:15:06,114 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:15:06,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06 WrapperNode [2020-10-27 23:15:06,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:15:06,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:15:06,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:15:06,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:15:06,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... [2020-10-27 23:15:06,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... [2020-10-27 23:15:06,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... [2020-10-27 23:15:06,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... [2020-10-27 23:15:06,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... [2020-10-27 23:15:06,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... [2020-10-27 23:15:06,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... [2020-10-27 23:15:06,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:15:06,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:15:06,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:15:06,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:15:06,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:15:06,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:15:06,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:15:06,421 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:15:06,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:15:06,422 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 23:15:06,422 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 23:15:06,422 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 23:15:06,422 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-27 23:15:06,422 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-27 23:15:06,423 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 23:15:06,423 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 23:15:06,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:15:06,423 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 23:15:06,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:15:06,423 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:15:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:15:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:15:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:15:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:15:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:15:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:15:06,424 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:15:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:15:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:15:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:15:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:15:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:15:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:15:06,425 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:15:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:15:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:15:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:15:06,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:15:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:15:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:15:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:15:06,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:15:09,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:15:09,318 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 23:15:09,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:15:09 BoogieIcfgContainer [2020-10-27 23:15:09,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:15:09,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:15:09,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:15:09,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:15:09,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:15:05" (1/3) ... [2020-10-27 23:15:09,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107a3c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:15:09, skipping insertion in model container [2020-10-27 23:15:09,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:15:06" (2/3) ... [2020-10-27 23:15:09,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107a3c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:15:09, skipping insertion in model container [2020-10-27 23:15:09,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:15:09" (3/3) ... [2020-10-27 23:15:09,330 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c [2020-10-27 23:15:09,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:15:09,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:15:09,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:15:09,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:15:09,397 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:15:09,397 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:15:09,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:15:09,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:15:09,397 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:15:09,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:15:09,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:15:09,437 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states. [2020-10-27 23:15:09,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 23:15:09,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:09,478 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] [2020-10-27 23:15:09,479 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1718594068, now seen corresponding path program 1 times [2020-10-27 23:15:09,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:09,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255310274] [2020-10-27 23:15:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:11,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:11,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 23:15:11,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:11,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-10-27 23:15:11,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 23:15:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:15:12,531 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:12,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:12,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:12,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:12,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 23:15:12,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:12,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:12,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:12,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:12,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:12,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:15:12,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:12,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 23:15:12,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:12,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:12,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:15:12,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:15:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:12,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:15:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:15:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:13,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:13,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:13,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:15:13,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 23:15:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:13,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:13,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:13,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:13,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:15:13,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:13,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:15:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:13,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:13,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:13,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:15:13,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:13,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:13,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 23:15:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:13,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:13,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:13,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:15:13,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:13,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:13,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 23:15:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:13,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:13,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:13,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:13,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:15:13,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:13,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:13,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:13,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:13,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 23:15:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:13,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:13,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:13,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:13,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:13,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:13,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:15:13,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255310274] [2020-10-27 23:15:13,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:13,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:15:13,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384323877] [2020-10-27 23:15:13,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:15:13,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:13,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:15:13,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:15:13,477 INFO L87 Difference]: Start difference. First operand 777 states. Second operand 8 states. [2020-10-27 23:15:16,830 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:17,550 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:18,441 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:19,225 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:20,043 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:21,259 INFO L93 Difference]: Finished difference Result 1056 states and 1861 transitions. [2020-10-27 23:15:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 23:15:21,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-27 23:15:21,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:21,287 INFO L225 Difference]: With dead ends: 1056 [2020-10-27 23:15:21,288 INFO L226 Difference]: Without dead ends: 834 [2020-10-27 23:15:21,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 23:15:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-27 23:15:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 769. [2020-10-27 23:15:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 23:15:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1388 transitions. [2020-10-27 23:15:21,535 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1388 transitions. Word has length 188 [2020-10-27 23:15:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:21,539 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1388 transitions. [2020-10-27 23:15:21,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:15:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1388 transitions. [2020-10-27 23:15:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 23:15:21,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:21,556 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] [2020-10-27 23:15:21,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:15:21,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1274693394, now seen corresponding path program 1 times [2020-10-27 23:15:21,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:21,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906814868] [2020-10-27 23:15:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:24,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:24,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-27 23:15:24,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:24,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3066 [2020-10-27 23:15:24,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 23:15:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 23:15:24,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 23:15:24,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:26,073 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:26,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:26,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:26,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:26,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 23:15:26,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:26,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:26,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:26,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:26,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:15:26,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-27 23:15:26,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:26,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 23:15:26,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 23:15:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:27,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:15:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 23:15:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 23:15:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:27,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:27,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:27,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:27,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:27,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:15:27,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:27,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:27,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:27,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:27,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:15:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 23:15:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:27,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:27,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:27,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 23:15:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:27,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:27,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:27,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:27,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 23:15:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:27,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:27,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:27,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:15:27,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-27 23:15:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:27,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:27,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:27,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:27,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:27,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:27,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:27,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:27,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:27,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-27 23:15:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:27,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:27,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:27,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:27,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:27,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:15:27,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:27,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:15:27,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906814868] [2020-10-27 23:15:27,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:27,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 23:15:27,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546789547] [2020-10-27 23:15:27,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 23:15:27,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 23:15:27,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 23:15:27,516 INFO L87 Difference]: Start difference. First operand 769 states and 1388 transitions. Second operand 14 states. [2020-10-27 23:15:37,266 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:15:38,440 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:15:39,758 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:15:40,889 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:15:42,401 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:43,307 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:44,425 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:45,380 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:46,424 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:15:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:15:48,119 INFO L93 Difference]: Finished difference Result 1057 states and 1863 transitions. [2020-10-27 23:15:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 23:15:48,120 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-27 23:15:48,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:15:48,128 INFO L225 Difference]: With dead ends: 1057 [2020-10-27 23:15:48,128 INFO L226 Difference]: Without dead ends: 845 [2020-10-27 23:15:48,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-27 23:15:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-27 23:15:48,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 769. [2020-10-27 23:15:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-27 23:15:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1323 transitions. [2020-10-27 23:15:48,290 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1323 transitions. Word has length 188 [2020-10-27 23:15:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:15:48,291 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 1323 transitions. [2020-10-27 23:15:48,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 23:15:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1323 transitions. [2020-10-27 23:15:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 23:15:48,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:15:48,296 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] [2020-10-27 23:15:48,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:15:48,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:15:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:15:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash 595284816, now seen corresponding path program 1 times [2020-10-27 23:15:48,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:15:48,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576035869] [2020-10-27 23:15:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:15:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:49,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:50,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-27 23:15:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:15:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-27 23:15:53,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-27 23:15:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 23:15:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:15:54,879 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:15:54,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:15:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:54,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:54,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:15:54,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:54,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:15:54,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:54,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:54,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:15:54,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:15:55,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-27 23:15:55,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-27 23:15:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:15:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:15:55,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:55,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:55,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:15:55,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:15:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:55,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:15:55,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:15:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:15:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:55,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:15:55,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:55,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:55,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:15:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:15:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:55,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:15:55,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:15:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:15:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:15:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 23:15:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:55,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:15:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:15:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:15:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:15:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-27 23:15:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:15:55,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:15:55,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:15:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:55,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 23:15:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:15:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:15:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:15:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:15:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:15:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:15:55,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:15:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:15:55,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:15:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:15:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:15:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:15:55,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576035869] [2020-10-27 23:15:55,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:15:55,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:15:55,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428120158] [2020-10-27 23:15:55,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:15:55,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:15:55,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:15:55,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:15:55,907 INFO L87 Difference]: Start difference. First operand 769 states and 1323 transitions. Second operand 11 states. [2020-10-27 23:15:57,153 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:04,247 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:04,960 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:05,845 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:06,659 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:07,374 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:07,981 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:08,279 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:10,156 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:10,810 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:11,489 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:13,025 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:13,354 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:13,855 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:16:13,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:13,911 INFO L93 Difference]: Finished difference Result 1304 states and 2208 transitions. [2020-10-27 23:16:13,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:16:13,912 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 252 [2020-10-27 23:16:13,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:13,921 INFO L225 Difference]: With dead ends: 1304 [2020-10-27 23:16:13,921 INFO L226 Difference]: Without dead ends: 1098 [2020-10-27 23:16:13,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:16:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2020-10-27 23:16:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 962. [2020-10-27 23:16:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-27 23:16:14,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1641 transitions. [2020-10-27 23:16:14,110 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1641 transitions. Word has length 252 [2020-10-27 23:16:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:14,112 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1641 transitions. [2020-10-27 23:16:14,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:16:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1641 transitions. [2020-10-27 23:16:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-27 23:16:14,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:14,119 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] [2020-10-27 23:16:14,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:16:14,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:14,120 INFO L82 PathProgramCache]: Analyzing trace with hash 295384056, now seen corresponding path program 1 times [2020-10-27 23:16:14,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:14,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788530896] [2020-10-27 23:16:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:17,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:17,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:19,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:19,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-27 23:16:19,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:16:19,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 23:16:19,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:19,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-27 23:16:19,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 23:16:19,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,409 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:20,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:20,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:16:20,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:16:20,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 23:16:20,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 23:16:20,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:16:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:20,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:20,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:16:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:20,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:16:20,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:16:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:20,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:16:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:21,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:16:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:21,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:21,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:21,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:21,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:16:21,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-27 23:16:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:21,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:21,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:21,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:16:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 23:16:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:21,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:21,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:21,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:21,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:16:21,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:21,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:16:21,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:21,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 23:16:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:21,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:21,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:21,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:21,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:16:21,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788530896] [2020-10-27 23:16:21,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:21,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:21,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662266089] [2020-10-27 23:16:21,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:21,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:21,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:21,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:21,367 INFO L87 Difference]: Start difference. First operand 962 states and 1641 transitions. Second operand 11 states. [2020-10-27 23:16:22,508 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:29,474 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:30,160 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:31,068 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:31,730 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:32,318 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:32,616 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:33,622 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:33,918 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:35,488 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:36,067 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:37,490 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:37,807 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:38,258 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:16:38,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:16:38,317 INFO L93 Difference]: Finished difference Result 2006 states and 3367 transitions. [2020-10-27 23:16:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:16:38,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 256 [2020-10-27 23:16:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:16:38,329 INFO L225 Difference]: With dead ends: 2006 [2020-10-27 23:16:38,329 INFO L226 Difference]: Without dead ends: 1607 [2020-10-27 23:16:38,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:16:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-10-27 23:16:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1338. [2020-10-27 23:16:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-27 23:16:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 2257 transitions. [2020-10-27 23:16:38,546 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 2257 transitions. Word has length 256 [2020-10-27 23:16:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:16:38,546 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 2257 transitions. [2020-10-27 23:16:38,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:16:38,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 2257 transitions. [2020-10-27 23:16:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-27 23:16:38,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:16:38,552 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] [2020-10-27 23:16:38,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:16:38,553 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:16:38,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:16:38,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1049986960, now seen corresponding path program 1 times [2020-10-27 23:16:38,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:16:38,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584430556] [2020-10-27 23:16:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:16:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:41,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:41,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:42,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:43,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:43,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:43,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-27 23:16:43,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:16:43,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:16:43,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-27 23:16:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 23:16:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,798 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:16:44,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:16:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:44,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:44,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:16:44,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 23:16:44,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:44,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:16:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:16:45,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-27 23:16:45,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:45,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 23:16:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:16:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:16:45,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:16:45,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:45,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:16:45,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:16:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:45,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:16:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:16:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 23:16:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:16:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:45,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:16:45,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:16:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:16:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:16:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-27 23:16:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:45,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:45,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-27 23:16:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:16:45,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:16:45,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:16:45,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:45,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-27 23:16:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:16:45,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:16:45,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:45,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:16:45,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:45,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:16:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:16:45,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:16:45,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:16:45,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:16:45,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:16:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:16:45,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584430556] [2020-10-27 23:16:45,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:16:45,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:16:45,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057766625] [2020-10-27 23:16:45,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:16:45,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:16:45,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:16:45,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:16:45,748 INFO L87 Difference]: Start difference. First operand 1338 states and 2257 transitions. Second operand 11 states. [2020-10-27 23:16:46,927 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:16:54,061 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:54,833 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:55,618 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:16:56,281 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:56,608 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:57,892 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:58,210 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:16:59,417 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:16:59,712 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:01,697 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:03,095 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:03,426 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:03,903 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:03,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:17:03,991 INFO L93 Difference]: Finished difference Result 3380 states and 5625 transitions. [2020-10-27 23:17:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:17:03,992 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-10-27 23:17:03,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:17:04,006 INFO L225 Difference]: With dead ends: 3380 [2020-10-27 23:17:04,006 INFO L226 Difference]: Without dead ends: 2605 [2020-10-27 23:17:04,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:17:04,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-10-27 23:17:04,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2070. [2020-10-27 23:17:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-27 23:17:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 3449 transitions. [2020-10-27 23:17:04,288 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 3449 transitions. Word has length 260 [2020-10-27 23:17:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:17:04,289 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 3449 transitions. [2020-10-27 23:17:04,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:17:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 3449 transitions. [2020-10-27 23:17:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-27 23:17:04,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:17:04,296 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] [2020-10-27 23:17:04,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:17:04,296 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:17:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:17:04,297 INFO L82 PathProgramCache]: Analyzing trace with hash -268166088, now seen corresponding path program 1 times [2020-10-27 23:17:04,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:17:04,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560078961] [2020-10-27 23:17:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:17:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:04,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:04,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:09,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 23:17:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:10,505 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:17:10,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:17:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:10,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:10,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:17:10,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:17:10,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:17:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:10,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:10,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:17:10,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:10,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 23:17:10,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:10,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 23:17:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:17:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:10,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:17:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:10,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:17:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:10,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:10,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:10,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:17:10,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:17:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 23:17:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-27 23:17:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:11,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:11,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:11,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:11,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:11,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 23:17:11,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:11,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-27 23:17:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:11,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:11,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:11,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 23:17:11,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:17:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:11,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-27 23:17:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:11,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:11,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:11,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:11,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 23:17:11,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:11,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-27 23:17:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:11,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:11,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:17:11,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 23:17:11,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:17:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:11,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:17:11,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560078961] [2020-10-27 23:17:11,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:17:11,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:17:11,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797877018] [2020-10-27 23:17:11,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:17:11,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:17:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:17:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:17:11,348 INFO L87 Difference]: Start difference. First operand 2070 states and 3449 transitions. Second operand 11 states. [2020-10-27 23:17:12,495 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:19,520 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:20,103 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:20,718 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:21,019 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:22,184 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:22,483 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:23,653 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:23,952 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:25,106 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:25,413 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:27,673 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:28,483 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:17:28,941 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:17:29,096 INFO L93 Difference]: Finished difference Result 6108 states and 10085 transitions. [2020-10-27 23:17:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:17:29,101 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 264 [2020-10-27 23:17:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:17:29,126 INFO L225 Difference]: With dead ends: 6108 [2020-10-27 23:17:29,127 INFO L226 Difference]: Without dead ends: 4601 [2020-10-27 23:17:29,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:17:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-10-27 23:17:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 3478. [2020-10-27 23:17:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3478 states. [2020-10-27 23:17:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5689 transitions. [2020-10-27 23:17:29,573 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5689 transitions. Word has length 264 [2020-10-27 23:17:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:17:29,574 INFO L481 AbstractCegarLoop]: Abstraction has 3478 states and 5689 transitions. [2020-10-27 23:17:29,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:17:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5689 transitions. [2020-10-27 23:17:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-27 23:17:29,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:17:29,581 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] [2020-10-27 23:17:29,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:17:29,581 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:17:29,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:17:29,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2091824688, now seen corresponding path program 1 times [2020-10-27 23:17:29,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:17:29,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106797562] [2020-10-27 23:17:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:17:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:29,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:30,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:30,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:31,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:31,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:31,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:34,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:34,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-27 23:17:34,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:17:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 23:17:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 23:17:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 23:17:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:35,909 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:17:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:17:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:35,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:35,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:17:35,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:35,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 23:17:35,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:35,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:17:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:17:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 23:17:36,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 23:17:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:17:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:36,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:17:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:17:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:36,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:17:36,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:36,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:36,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 23:17:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:36,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:17:36,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 23:17:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:17:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:36,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 23:17:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:17:36,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:17:36,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:17:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:17:36,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 23:17:36,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:17:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 23:17:36,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:17:36,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:17:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:17:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:17:36,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-27 23:17:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:36,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:17:36,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:17:36,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:17:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:17:36,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:17:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:17:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 23:17:36,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:17:36,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:17:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:17:36,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106797562] [2020-10-27 23:17:36,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:17:36,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:17:36,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585139868] [2020-10-27 23:17:36,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:17:36,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:17:36,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:17:36,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:17:36,955 INFO L87 Difference]: Start difference. First operand 3478 states and 5689 transitions. Second operand 11 states. [2020-10-27 23:17:38,178 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:17:45,571 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:46,393 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:47,220 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:47,956 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:17:48,674 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:49,195 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:17:50,414 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:51,059 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:51,680 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:52,289 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:17:53,705 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:17:54,027 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:17:54,513 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:17:54,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:17:54,573 INFO L93 Difference]: Finished difference Result 11276 states and 18381 transitions. [2020-10-27 23:17:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 23:17:54,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 268 [2020-10-27 23:17:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:17:54,616 INFO L225 Difference]: With dead ends: 11276 [2020-10-27 23:17:54,616 INFO L226 Difference]: Without dead ends: 8361 [2020-10-27 23:17:54,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-27 23:17:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8361 states. [2020-10-27 23:17:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8361 to 6230. [2020-10-27 23:17:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2020-10-27 23:17:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 10073 transitions. [2020-10-27 23:17:55,303 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 10073 transitions. Word has length 268 [2020-10-27 23:17:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:17:55,304 INFO L481 AbstractCegarLoop]: Abstraction has 6230 states and 10073 transitions. [2020-10-27 23:17:55,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:17:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 10073 transitions. [2020-10-27 23:17:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-27 23:17:55,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:17:55,312 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] [2020-10-27 23:17:55,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:17:55,313 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:17:55,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:17:55,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1057755624, now seen corresponding path program 1 times [2020-10-27 23:17:55,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:17:55,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040482343] [2020-10-27 23:17:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:17:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:17:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:55,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:56,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:17:58,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 23:18:00,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:18:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:18:00,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 23:18:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-27 23:18:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 23:18:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:01,740 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-27 23:18:01,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:18:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:01,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:01,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:18:01,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:01,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:18:01,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:18:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:18:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:18:01,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 23:18:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:01,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 23:18:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-27 23:18:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 23:18:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:18:02,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:18:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:18:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:18:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-27 23:18:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:02,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:02,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:02,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:02,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:18:02,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:02,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-27 23:18:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:02,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:02,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:02,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 23:18:02,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 23:18:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:02,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:02,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:18:02,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:02,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 23:18:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:02,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:02,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:02,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:18:02,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:02,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:03,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-27 23:18:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:03,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:03,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:03,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 23:18:03,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:03,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:18:03,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:18:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 23:18:03,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 23:18:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-27 23:18:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:18:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:18:03,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:18:03,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 23:18:03,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:18:03,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 23:18:03,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:18:03,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:18:03,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 23:18:03,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 23:18:03,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:18:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:18:03,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040482343] [2020-10-27 23:18:03,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:18:03,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 23:18:03,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547306570] [2020-10-27 23:18:03,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 23:18:03,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:18:03,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 23:18:03,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:18:03,232 INFO L87 Difference]: Start difference. First operand 6230 states and 10073 transitions. Second operand 19 states. [2020-10-27 23:18:04,588 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-27 23:18:16,151 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-27 23:18:17,405 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-27 23:18:18,651 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-27 23:18:19,940 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-27 23:18:20,646 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:21,347 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:21,997 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:22,361 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:23,356 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:23,973 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:24,622 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:25,017 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:25,383 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:26,741 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:18:27,423 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:27,822 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:28,540 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:28,951 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:29,314 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:29,686 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:18:31,204 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:18:31,899 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:32,269 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:32,649 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:18:33,480 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:18:33,910 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 23:18:34,286 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 23:18:34,667 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:18:35,062 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:18:36,954 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:18:37,782 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 23:18:38,179 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 23:18:38,582 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 23:18:38,995 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:18:40,693 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 23:18:41,920 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 23:18:43,154 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 407