/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:29:52,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:29:52,382 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:29:52,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:29:52,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:29:52,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:29:52,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:29:52,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:29:52,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:29:52,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:29:52,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:29:52,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:29:52,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:29:52,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:29:52,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:29:52,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:29:52,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:29:52,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:29:52,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:29:52,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:29:52,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:29:52,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:29:52,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:29:52,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:29:52,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:29:52,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:29:52,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:29:52,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:29:52,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:29:52,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:29:52,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:29:52,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:29:52,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:29:52,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:29:52,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:29:52,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:29:52,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:29:52,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:29:52,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:29:52,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:29:52,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:29:52,574 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 23:29:52,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:29:52,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:29:52,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:29:52,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:29:52,643 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:29:52,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:29:52,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:29:52,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:29:52,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:29:52,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:29:52,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:29:52,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:29:52,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:29:52,647 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:29:52,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:29:52,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:29:52,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:29:52,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:29:52,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:29:52,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:29:52,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:29:52,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:29:52,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:29:52,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:29:52,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:29:52,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:29:52,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:29:52,650 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:29:52,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:29:52,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:29:53,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:29:53,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:29:53,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:29:53,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:29:53,155 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:29:53,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:29:53,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2518b18b1/7afae85541d245348e16627b5b32c426/FLAG851fab9ab [2020-10-27 23:29:54,093 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:29:54,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:29:54,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2518b18b1/7afae85541d245348e16627b5b32c426/FLAG851fab9ab [2020-10-27 23:29:54,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2518b18b1/7afae85541d245348e16627b5b32c426 [2020-10-27 23:29:54,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:29:54,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:29:54,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:29:54,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:29:54,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:29:54,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:29:54" (1/1) ... [2020-10-27 23:29:54,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbed540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:54, skipping insertion in model container [2020-10-27 23:29:54,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:29:54" (1/1) ... [2020-10-27 23:29:54,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:29:54,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:29:55,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:29:55,458 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:29:55,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:29:55,753 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:29:55,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55 WrapperNode [2020-10-27 23:29:55,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:29:55,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:29:55,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:29:55,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:29:55,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (1/1) ... [2020-10-27 23:29:55,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (1/1) ... [2020-10-27 23:29:55,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (1/1) ... [2020-10-27 23:29:55,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (1/1) ... [2020-10-27 23:29:55,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (1/1) ... [2020-10-27 23:29:55,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (1/1) ... [2020-10-27 23:29:55,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (1/1) ... [2020-10-27 23:29:55,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:29:55,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:29:55,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:29:55,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:29:55,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (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 23:29:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:29:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:29:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:29:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:29:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:29:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:29:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:29:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:29:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:29:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:29:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:29:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:29:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:29:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:29:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:29:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:29:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:29:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:29:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:29:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:29:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:29:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:29:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:29:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:29:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:29:56,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:29:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:29:56,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:29:58,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:29:58,624 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:29:58,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:29:58 BoogieIcfgContainer [2020-10-27 23:29:58,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:29:58,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:29:58,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:29:58,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:29:58,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:29:54" (1/3) ... [2020-10-27 23:29:58,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3c628a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:29:58, skipping insertion in model container [2020-10-27 23:29:58,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:29:55" (2/3) ... [2020-10-27 23:29:58,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3c628a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:29:58, skipping insertion in model container [2020-10-27 23:29:58,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:29:58" (3/3) ... [2020-10-27 23:29:58,642 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-27 23:29:58,657 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:29:58,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:29:58,681 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:29:58,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:29:58,731 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:29:58,731 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:29:58,731 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:29:58,731 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:29:58,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:29:58,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:29:58,732 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:29:58,776 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states. [2020-10-27 23:29:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-27 23:29:58,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:29:58,806 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] [2020-10-27 23:29:58,807 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:29:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:29:58,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1502571194, now seen corresponding path program 1 times [2020-10-27 23:29:58,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:29:58,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838483363] [2020-10-27 23:29:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:29:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:00,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:00,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:01,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:02,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:03,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:04,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:04,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-27 23:30:04,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:30:04,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:30:04,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:30:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:30:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 23:30:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 23:30:06,007 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:30:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:30:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:06,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:30:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:30:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:30:06,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:30:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:30:06,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:30:06,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:06,220 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 23:30:06,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838483363] [2020-10-27 23:30:06,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:30:06,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:30:06,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096007724] [2020-10-27 23:30:06,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:30:06,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:30:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:30:06,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:30:06,260 INFO L87 Difference]: Start difference. First operand 590 states. Second operand 5 states. [2020-10-27 23:30:12,777 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:30:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:30:14,559 INFO L93 Difference]: Finished difference Result 1691 states and 3011 transitions. [2020-10-27 23:30:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:30:14,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-27 23:30:14,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:30:14,594 INFO L225 Difference]: With dead ends: 1691 [2020-10-27 23:30:14,594 INFO L226 Difference]: Without dead ends: 1122 [2020-10-27 23:30:14,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:30:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-10-27 23:30:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1119. [2020-10-27 23:30:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2020-10-27 23:30:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1740 transitions. [2020-10-27 23:30:14,794 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1740 transitions. Word has length 239 [2020-10-27 23:30:14,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:30:14,796 INFO L481 AbstractCegarLoop]: Abstraction has 1119 states and 1740 transitions. [2020-10-27 23:30:14,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:30:14,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1740 transitions. [2020-10-27 23:30:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-27 23:30:14,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:14,806 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] [2020-10-27 23:30:14,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:30:14,807 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:14,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1729557019, now seen corresponding path program 1 times [2020-10-27 23:30:14,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:14,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818051230] [2020-10-27 23:30:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:14,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:19,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-27 23:30:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:30:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 23:30:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:30:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 23:30:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:30:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:20,762 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:30:20,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:30:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:30:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 23:30:20,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:30:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:30:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:30:20,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:30:20,957 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 23:30:20,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818051230] [2020-10-27 23:30:20,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:30:20,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:30:20,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600541281] [2020-10-27 23:30:20,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:30:20,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:30:20,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:30:20,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:30:20,977 INFO L87 Difference]: Start difference. First operand 1119 states and 1740 transitions. Second operand 5 states. [2020-10-27 23:30:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:30:28,476 INFO L93 Difference]: Finished difference Result 3109 states and 4787 transitions. [2020-10-27 23:30:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:30:28,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-27 23:30:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:30:28,492 INFO L225 Difference]: With dead ends: 3109 [2020-10-27 23:30:28,493 INFO L226 Difference]: Without dead ends: 2161 [2020-10-27 23:30:28,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:30:28,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2020-10-27 23:30:28,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1233. [2020-10-27 23:30:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2020-10-27 23:30:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1940 transitions. [2020-10-27 23:30:28,606 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1940 transitions. Word has length 241 [2020-10-27 23:30:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:30:28,606 INFO L481 AbstractCegarLoop]: Abstraction has 1233 states and 1940 transitions. [2020-10-27 23:30:28,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:30:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1940 transitions. [2020-10-27 23:30:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-27 23:30:28,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:28,613 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] [2020-10-27 23:30:28,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:30:28,613 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:28,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1291171584, now seen corresponding path program 1 times [2020-10-27 23:30:28,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:28,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590105085] [2020-10-27 23:30:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:29,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:30,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:31,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:31,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:33,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-27 23:30:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:30:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 23:30:33,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:30:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 23:30:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 23:30:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:30:34,485 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:30:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:30:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:34,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:34,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:34,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:30:34,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:30:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:30:34,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:30:34,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:30:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:30:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:30:34,772 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 23:30:34,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590105085] [2020-10-27 23:30:34,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:30:34,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:30:34,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98951926] [2020-10-27 23:30:34,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:30:34,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:30:34,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:30:34,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:30:34,781 INFO L87 Difference]: Start difference. First operand 1233 states and 1940 transitions. Second operand 4 states. [2020-10-27 23:30:40,901 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-27 23:30:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:30:42,614 INFO L93 Difference]: Finished difference Result 3343 states and 5203 transitions. [2020-10-27 23:30:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:30:42,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2020-10-27 23:30:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:30:42,637 INFO L225 Difference]: With dead ends: 3343 [2020-10-27 23:30:42,637 INFO L226 Difference]: Without dead ends: 2311 [2020-10-27 23:30:42,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:30:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-10-27 23:30:42,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2308. [2020-10-27 23:30:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2020-10-27 23:30:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3594 transitions. [2020-10-27 23:30:42,775 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3594 transitions. Word has length 241 [2020-10-27 23:30:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:30:42,776 INFO L481 AbstractCegarLoop]: Abstraction has 2308 states and 3594 transitions. [2020-10-27 23:30:42,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:30:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3594 transitions. [2020-10-27 23:30:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-27 23:30:42,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:42,784 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] [2020-10-27 23:30:42,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:30:42,784 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1809626704, now seen corresponding path program 1 times [2020-10-27 23:30:42,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:42,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665629728] [2020-10-27 23:30:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:44,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:44,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:45,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:45,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:47,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:47,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 23:30:47,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:30:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 23:30:47,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:30:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:30:47,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 23:30:47,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:48,699 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:30:48,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:30:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:30:48,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:30:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:30:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:30:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:30:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:30:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:48,868 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 23:30:48,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665629728] [2020-10-27 23:30:48,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:30:48,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:30:48,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051953485] [2020-10-27 23:30:48,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:30:48,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:30:48,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:30:48,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:30:48,872 INFO L87 Difference]: Start difference. First operand 2308 states and 3594 transitions. Second operand 4 states. [2020-10-27 23:30:55,154 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-27 23:30:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:30:56,870 INFO L93 Difference]: Finished difference Result 6517 states and 10068 transitions. [2020-10-27 23:30:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:30:56,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-10-27 23:30:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:30:56,895 INFO L225 Difference]: With dead ends: 6517 [2020-10-27 23:30:56,895 INFO L226 Difference]: Without dead ends: 4460 [2020-10-27 23:30:56,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:30:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2020-10-27 23:30:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 4457. [2020-10-27 23:30:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4457 states. [2020-10-27 23:30:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 6884 transitions. [2020-10-27 23:30:57,197 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 6884 transitions. Word has length 242 [2020-10-27 23:30:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:30:57,198 INFO L481 AbstractCegarLoop]: Abstraction has 4457 states and 6884 transitions. [2020-10-27 23:30:57,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:30:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 6884 transitions. [2020-10-27 23:30:57,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-27 23:30:57,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:57,211 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] [2020-10-27 23:30:57,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:30:57,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:57,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1787673120, now seen corresponding path program 1 times [2020-10-27 23:30:57,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:57,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167586710] [2020-10-27 23:30:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:57,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:01,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:02,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:02,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-27 23:31:02,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:31:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:31:02,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:31:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 23:31:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:31:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:03,092 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:31:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:03,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:03,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:03,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:03,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:31:03,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:03,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:03,270 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 23:31:03,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167586710] [2020-10-27 23:31:03,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:03,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:31:03,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081581877] [2020-10-27 23:31:03,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:31:03,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:31:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:03,272 INFO L87 Difference]: Start difference. First operand 4457 states and 6884 transitions. Second operand 5 states. [2020-10-27 23:31:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:07,196 INFO L93 Difference]: Finished difference Result 7594 states and 11553 transitions. [2020-10-27 23:31:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:31:07,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-10-27 23:31:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:07,216 INFO L225 Difference]: With dead ends: 7594 [2020-10-27 23:31:07,216 INFO L226 Difference]: Without dead ends: 4035 [2020-10-27 23:31:07,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:31:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2020-10-27 23:31:07,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 4027. [2020-10-27 23:31:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4027 states. [2020-10-27 23:31:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 6227 transitions. [2020-10-27 23:31:07,441 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 6227 transitions. Word has length 243 [2020-10-27 23:31:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:07,442 INFO L481 AbstractCegarLoop]: Abstraction has 4027 states and 6227 transitions. [2020-10-27 23:31:07,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:31:07,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 6227 transitions. [2020-10-27 23:31:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 23:31:07,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:07,454 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] [2020-10-27 23:31:07,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:31:07,454 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:07,455 INFO L82 PathProgramCache]: Analyzing trace with hash -116193254, now seen corresponding path program 1 times [2020-10-27 23:31:07,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:07,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517536730] [2020-10-27 23:31:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:12,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:12,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 23:31:12,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:31:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:31:12,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:31:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:31:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 23:31:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:13,331 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:31:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:13,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:13,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:13,485 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 23:31:13,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517536730] [2020-10-27 23:31:13,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:13,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:31:13,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652522071] [2020-10-27 23:31:13,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:31:13,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:13,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:31:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:13,488 INFO L87 Difference]: Start difference. First operand 4027 states and 6227 transitions. Second operand 5 states. [2020-10-27 23:31:19,652 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-27 23:31:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:21,614 INFO L93 Difference]: Finished difference Result 11777 states and 18160 transitions. [2020-10-27 23:31:21,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:31:21,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-27 23:31:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:21,644 INFO L225 Difference]: With dead ends: 11777 [2020-10-27 23:31:21,644 INFO L226 Difference]: Without dead ends: 7912 [2020-10-27 23:31:21,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:31:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2020-10-27 23:31:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 7909. [2020-10-27 23:31:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7909 states. [2020-10-27 23:31:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 12147 transitions. [2020-10-27 23:31:22,227 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 12147 transitions. Word has length 247 [2020-10-27 23:31:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:22,228 INFO L481 AbstractCegarLoop]: Abstraction has 7909 states and 12147 transitions. [2020-10-27 23:31:22,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:31:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 12147 transitions. [2020-10-27 23:31:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-27 23:31:22,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:22,246 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] [2020-10-27 23:31:22,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:31:22,247 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:22,247 INFO L82 PathProgramCache]: Analyzing trace with hash -268424113, now seen corresponding path program 1 times [2020-10-27 23:31:22,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:22,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35592697] [2020-10-27 23:31:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:22,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:22,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:26,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:27,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:27,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:27,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-27 23:31:27,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:31:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 23:31:27,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:31:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 23:31:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 23:31:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:28,106 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:31:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:28,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:28,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:28,203 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 23:31:28,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35592697] [2020-10-27 23:31:28,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:28,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:31:28,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335151834] [2020-10-27 23:31:28,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:31:28,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:28,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:31:28,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:28,206 INFO L87 Difference]: Start difference. First operand 7909 states and 12147 transitions. Second operand 4 states. [2020-10-27 23:31:34,634 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-27 23:31:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:36,482 INFO L93 Difference]: Finished difference Result 22560 states and 34423 transitions. [2020-10-27 23:31:36,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:31:36,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 249 [2020-10-27 23:31:36,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:36,528 INFO L225 Difference]: With dead ends: 22560 [2020-10-27 23:31:36,528 INFO L226 Difference]: Without dead ends: 15295 [2020-10-27 23:31:36,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:31:36,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15295 states. [2020-10-27 23:31:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15295 to 15292. [2020-10-27 23:31:37,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15292 states. [2020-10-27 23:31:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15292 states to 15292 states and 23271 transitions. [2020-10-27 23:31:37,409 INFO L78 Accepts]: Start accepts. Automaton has 15292 states and 23271 transitions. Word has length 249 [2020-10-27 23:31:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:37,409 INFO L481 AbstractCegarLoop]: Abstraction has 15292 states and 23271 transitions. [2020-10-27 23:31:37,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:31:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 15292 states and 23271 transitions. [2020-10-27 23:31:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-27 23:31:37,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:37,442 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] [2020-10-27 23:31:37,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:31:37,442 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:37,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:37,443 INFO L82 PathProgramCache]: Analyzing trace with hash -305504214, now seen corresponding path program 1 times [2020-10-27 23:31:37,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:37,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087314161] [2020-10-27 23:31:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:37,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:37,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:38,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:38,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:42,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:42,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-27 23:31:42,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:31:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:31:42,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:31:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 23:31:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:31:42,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:43,147 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:31:43,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:43,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:31:43,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:43,272 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 23:31:43,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087314161] [2020-10-27 23:31:43,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:43,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:31:43,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478904112] [2020-10-27 23:31:43,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:31:43,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:43,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:31:43,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:43,275 INFO L87 Difference]: Start difference. First operand 15292 states and 23271 transitions. Second operand 4 states. [2020-10-27 23:31:51,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:31:51,395 INFO L93 Difference]: Finished difference Result 43846 states and 66184 transitions. [2020-10-27 23:31:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:31:51,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 249 [2020-10-27 23:31:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:31:51,470 INFO L225 Difference]: With dead ends: 43846 [2020-10-27 23:31:51,470 INFO L226 Difference]: Without dead ends: 29581 [2020-10-27 23:31:51,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29581 states. [2020-10-27 23:31:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29581 to 15656. [2020-10-27 23:31:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15656 states. [2020-10-27 23:31:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15656 states to 15656 states and 23765 transitions. [2020-10-27 23:31:52,674 INFO L78 Accepts]: Start accepts. Automaton has 15656 states and 23765 transitions. Word has length 249 [2020-10-27 23:31:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:31:52,674 INFO L481 AbstractCegarLoop]: Abstraction has 15656 states and 23765 transitions. [2020-10-27 23:31:52,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:31:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 15656 states and 23765 transitions. [2020-10-27 23:31:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 23:31:52,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:31:52,702 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] [2020-10-27 23:31:52,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:31:52,702 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:31:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:31:52,703 INFO L82 PathProgramCache]: Analyzing trace with hash -393813845, now seen corresponding path program 1 times [2020-10-27 23:31:52,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:31:52,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749972747] [2020-10-27 23:31:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:31:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:52,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:52,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:52,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:57,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 23:31:57,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 23:31:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-27 23:31:57,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:31:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:31:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 23:31:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:58,547 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:31:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:31:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:31:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:31:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:31:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:31:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:31:58,640 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 23:31:58,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749972747] [2020-10-27 23:31:58,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:31:58,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:31:58,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415782894] [2020-10-27 23:31:58,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:31:58,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:31:58,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:31:58,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:31:58,643 INFO L87 Difference]: Start difference. First operand 15656 states and 23765 transitions. Second operand 4 states. [2020-10-27 23:32:05,929 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2020-10-27 23:32:08,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:08,018 INFO L93 Difference]: Finished difference Result 44862 states and 67808 transitions. [2020-10-27 23:32:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:08,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2020-10-27 23:32:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:08,073 INFO L225 Difference]: With dead ends: 44862 [2020-10-27 23:32:08,073 INFO L226 Difference]: Without dead ends: 30649 [2020-10-27 23:32:08,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30649 states. [2020-10-27 23:32:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30649 to 30646. [2020-10-27 23:32:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30646 states. [2020-10-27 23:32:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30646 states to 30646 states and 46140 transitions. [2020-10-27 23:32:09,897 INFO L78 Accepts]: Start accepts. Automaton has 30646 states and 46140 transitions. Word has length 250 [2020-10-27 23:32:09,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:09,897 INFO L481 AbstractCegarLoop]: Abstraction has 30646 states and 46140 transitions. [2020-10-27 23:32:09,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:32:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 30646 states and 46140 transitions. [2020-10-27 23:32:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 23:32:09,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:09,933 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] [2020-10-27 23:32:09,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:32:09,933 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:09,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:09,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1376926162, now seen corresponding path program 1 times [2020-10-27 23:32:09,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:09,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215001421] [2020-10-27 23:32:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:14,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-27 23:32:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:32:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:32:14,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:32:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 23:32:14,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:32:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:15,763 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:32:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:15,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:15,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:15,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:15,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:15,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:32:15,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:15,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:15,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:15,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:15,844 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 23:32:15,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215001421] [2020-10-27 23:32:15,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:15,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:32:15,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265375850] [2020-10-27 23:32:15,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:32:15,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:15,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:32:15,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:15,847 INFO L87 Difference]: Start difference. First operand 30646 states and 46140 transitions. Second operand 5 states. [2020-10-27 23:32:24,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:24,706 INFO L93 Difference]: Finished difference Result 77890 states and 115372 transitions. [2020-10-27 23:32:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:24,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-27 23:32:24,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:24,817 INFO L225 Difference]: With dead ends: 77890 [2020-10-27 23:32:24,817 INFO L226 Difference]: Without dead ends: 55251 [2020-10-27 23:32:24,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:32:24,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55251 states. [2020-10-27 23:32:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55251 to 36021. [2020-10-27 23:32:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36021 states. [2020-10-27 23:32:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36021 states to 36021 states and 55030 transitions. [2020-10-27 23:32:27,523 INFO L78 Accepts]: Start accepts. Automaton has 36021 states and 55030 transitions. Word has length 250 [2020-10-27 23:32:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:27,523 INFO L481 AbstractCegarLoop]: Abstraction has 36021 states and 55030 transitions. [2020-10-27 23:32:27,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:32:27,523 INFO L276 IsEmpty]: Start isEmpty. Operand 36021 states and 55030 transitions. [2020-10-27 23:32:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-27 23:32:27,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:27,560 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 23:32:27,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:32:27,560 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash 310075362, now seen corresponding path program 1 times [2020-10-27 23:32:27,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:27,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357719116] [2020-10-27 23:32:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:27,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:28,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:32,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:32,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:32,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:32:32,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:33,380 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:32:33,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:33,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:33,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:32:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:33,448 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 23:32:33,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357719116] [2020-10-27 23:32:33,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:33,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:32:33,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527583326] [2020-10-27 23:32:33,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:32:33,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:33,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:32:33,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:32:33,450 INFO L87 Difference]: Start difference. First operand 36021 states and 55030 transitions. Second operand 4 states. [2020-10-27 23:32:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:43,194 INFO L93 Difference]: Finished difference Result 81031 states and 119690 transitions. [2020-10-27 23:32:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:32:43,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 252 [2020-10-27 23:32:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:43,256 INFO L225 Difference]: With dead ends: 81031 [2020-10-27 23:32:43,256 INFO L226 Difference]: Without dead ends: 58553 [2020-10-27 23:32:43,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:32:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58553 states. [2020-10-27 23:32:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58553 to 36756. [2020-10-27 23:32:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36756 states. [2020-10-27 23:32:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36756 states to 36756 states and 55968 transitions. [2020-10-27 23:32:46,092 INFO L78 Accepts]: Start accepts. Automaton has 36756 states and 55968 transitions. Word has length 252 [2020-10-27 23:32:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:32:46,092 INFO L481 AbstractCegarLoop]: Abstraction has 36756 states and 55968 transitions. [2020-10-27 23:32:46,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:32:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 36756 states and 55968 transitions. [2020-10-27 23:32:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-27 23:32:46,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:32:46,130 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] [2020-10-27 23:32:46,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:32:46,131 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:32:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:32:46,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1957161742, now seen corresponding path program 1 times [2020-10-27 23:32:46,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:32:46,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572386479] [2020-10-27 23:32:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:32:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:51,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:32:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:51,980 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:32:51,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:32:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:32:51,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:32:52,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:32:52,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:32:52,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:32:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:32:52,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:32:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:32:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:32:52,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:32:52,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:32:52,064 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 23:32:52,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572386479] [2020-10-27 23:32:52,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:32:52,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:32:52,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624555282] [2020-10-27 23:32:52,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:32:52,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:32:52,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:32:52,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:32:52,066 INFO L87 Difference]: Start difference. First operand 36756 states and 55968 transitions. Second operand 5 states. [2020-10-27 23:32:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:32:57,930 INFO L93 Difference]: Finished difference Result 56534 states and 84306 transitions. [2020-10-27 23:32:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:32:57,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-27 23:32:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:32:57,973 INFO L225 Difference]: With dead ends: 56534 [2020-10-27 23:32:57,973 INFO L226 Difference]: Without dead ends: 33958 [2020-10-27 23:32:57,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:32:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33958 states. [2020-10-27 23:33:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33958 to 33706. [2020-10-27 23:33:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33706 states. [2020-10-27 23:33:00,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33706 states to 33706 states and 51426 transitions. [2020-10-27 23:33:00,144 INFO L78 Accepts]: Start accepts. Automaton has 33706 states and 51426 transitions. Word has length 253 [2020-10-27 23:33:00,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:33:00,145 INFO L481 AbstractCegarLoop]: Abstraction has 33706 states and 51426 transitions. [2020-10-27 23:33:00,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:33:00,145 INFO L276 IsEmpty]: Start isEmpty. Operand 33706 states and 51426 transitions. [2020-10-27 23:33:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-27 23:33:00,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:00,186 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] [2020-10-27 23:33:00,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:33:00,186 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:00,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1904103342, now seen corresponding path program 1 times [2020-10-27 23:33:00,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:00,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13545734] [2020-10-27 23:33:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:33:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:00,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:00,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:00,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:01,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:02,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:02,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:05,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:05,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-27 23:33:05,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:33:05,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:33:05,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 23:33:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:33:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-27 23:33:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:05,637 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-10-27 23:33:06,458 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-27 23:33:06,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:33:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:33:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:33:06,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:33:06,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:33:06,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:33:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:33:06,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:33:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:33:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:33:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:33:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:33:06,637 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 23:33:06,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13545734] [2020-10-27 23:33:06,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:33:06,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 23:33:06,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342023135] [2020-10-27 23:33:06,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 23:33:06,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:33:06,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 23:33:06,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 23:33:06,639 INFO L87 Difference]: Start difference. First operand 33706 states and 51426 transitions. Second operand 10 states. [2020-10-27 23:33:07,612 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2020-10-27 23:33:24,786 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2020-10-27 23:33:25,595 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2020-10-27 23:33:26,402 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-27 23:33:27,202 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 304 [2020-10-27 23:33:28,199 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 312