/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:09:02,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:09:02,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:09:02,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:09:02,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:09:02,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:09:02,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:09:02,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:09:02,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:09:02,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:09:02,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:09:02,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:09:02,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:09:02,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:09:02,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:09:02,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:09:02,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:09:02,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:09:02,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:09:02,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:09:02,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:09:02,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:09:02,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:09:02,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:09:02,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:09:02,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:09:02,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:09:02,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:09:02,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:09:02,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:09:02,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:09:02,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:09:02,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:09:02,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:09:02,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:09:02,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:09:02,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:09:02,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:09:02,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:09:02,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:09:02,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:09:02,178 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 [2020-10-29 14:09:02,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:09:02,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:09:02,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:09:02,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:09:02,210 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:09:02,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:09:02,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:09:02,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:09:02,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:09:02,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:09:02,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:09:02,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:09:02,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:09:02,212 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:09:02,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:09:02,213 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:09:02,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:09:02,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:09:02,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:09:02,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:09:02,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:09:02,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:09:02,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:09:02,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:09:02,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:09:02,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:09:02,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:09:02,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:09:02,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:09:02,215 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:09:02,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:09:02,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:09:02,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:09:02,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:09:02,633 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:09:02,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:09:02,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9b44011d/edba12a84d9641d684822b58bb854ead/FLAGbbf6279b0 [2020-10-29 14:09:03,489 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:09:03,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:09:03,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9b44011d/edba12a84d9641d684822b58bb854ead/FLAGbbf6279b0 [2020-10-29 14:09:03,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9b44011d/edba12a84d9641d684822b58bb854ead [2020-10-29 14:09:03,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:09:03,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:09:03,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:09:03,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:09:03,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:09:03,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:09:03" (1/1) ... [2020-10-29 14:09:03,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69194311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:03, skipping insertion in model container [2020-10-29 14:09:03,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:09:03" (1/1) ... [2020-10-29 14:09:03,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:09:03,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:09:04,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:09:04,460 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:09:04,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:09:04,716 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:09:04,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04 WrapperNode [2020-10-29 14:09:04,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:09:04,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:09:04,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:09:04,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:09:04,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (1/1) ... [2020-10-29 14:09:04,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (1/1) ... [2020-10-29 14:09:04,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (1/1) ... [2020-10-29 14:09:04,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (1/1) ... [2020-10-29 14:09:04,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (1/1) ... [2020-10-29 14:09:04,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (1/1) ... [2020-10-29 14:09:04,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (1/1) ... [2020-10-29 14:09:04,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:09:04,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:09:04,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:09:04,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:09:04,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (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 [2020-10-29 14:09:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:09:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:09:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:09:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:09:04,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:09:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:09:04,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:09:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:09:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:09:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:09:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:09:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:09:04,907 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:09:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:09:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:09:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:09:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:09:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:09:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:09:04,908 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:09:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:09:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:09:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:09:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:09:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:09:04,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:09:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:09:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:09:04,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:09:06,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:09:06,393 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:09:06,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:09:06 BoogieIcfgContainer [2020-10-29 14:09:06,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:09:06,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:09:06,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:09:06,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:09:06,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:09:03" (1/3) ... [2020-10-29 14:09:06,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf5fc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:09:06, skipping insertion in model container [2020-10-29 14:09:06,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:09:04" (2/3) ... [2020-10-29 14:09:06,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf5fc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:09:06, skipping insertion in model container [2020-10-29 14:09:06,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:09:06" (3/3) ... [2020-10-29 14:09:06,405 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:09:06,417 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:09:06,423 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:09:06,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:09:06,467 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:09:06,468 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:09:06,468 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:09:06,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:09:06,468 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:09:06,468 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:09:06,468 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:09:06,469 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:09:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2020-10-29 14:09:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 14:09:06,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:06,516 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] [2020-10-29 14:09:06,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash -561736880, now seen corresponding path program 1 times [2020-10-29 14:09:06,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:06,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724326185] [2020-10-29 14:09:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:07,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:07,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:12,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:12,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 14:09:12,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:09:12,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 14:09:12,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:12,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:09:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 14:09:12,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 14:09:12,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 14:09:12,782 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:09:12,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:12,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:12,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:12,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 14:09:12,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:12,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:12,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:12,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:09:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:12,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724326185] [2020-10-29 14:09:12,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:12,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:09:12,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027161766] [2020-10-29 14:09:12,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:09:12,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:09:12,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:09:12,973 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 4 states. [2020-10-29 14:09:13,617 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-29 14:09:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:15,984 INFO L93 Difference]: Finished difference Result 667 states and 1143 transitions. [2020-10-29 14:09:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:09:15,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-29 14:09:15,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:16,022 INFO L225 Difference]: With dead ends: 667 [2020-10-29 14:09:16,022 INFO L226 Difference]: Without dead ends: 497 [2020-10-29 14:09:16,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-29 14:09:16,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 493. [2020-10-29 14:09:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-29 14:09:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 814 transitions. [2020-10-29 14:09:16,128 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 814 transitions. Word has length 123 [2020-10-29 14:09:16,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:16,130 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 814 transitions. [2020-10-29 14:09:16,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:09:16,132 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 814 transitions. [2020-10-29 14:09:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 14:09:16,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:16,142 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] [2020-10-29 14:09:16,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:09:16,142 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:16,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1198128110, now seen corresponding path program 1 times [2020-10-29 14:09:16,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:16,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719455059] [2020-10-29 14:09:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:16,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:20,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:21,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:21,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 14:09:21,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:09:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 14:09:21,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:21,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:21,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 14:09:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:09:21,975 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:09:21,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:22,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:09:22,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:22,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:09:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:22,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719455059] [2020-10-29 14:09:22,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:22,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:22,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235558297] [2020-10-29 14:09:22,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:22,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:22,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:22,128 INFO L87 Difference]: Start difference. First operand 493 states and 814 transitions. Second operand 5 states. [2020-10-29 14:09:25,284 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:09:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:25,475 INFO L93 Difference]: Finished difference Result 1371 states and 2254 transitions. [2020-10-29 14:09:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:25,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 14:09:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:25,488 INFO L225 Difference]: With dead ends: 1371 [2020-10-29 14:09:25,489 INFO L226 Difference]: Without dead ends: 943 [2020-10-29 14:09:25,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-10-29 14:09:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 940. [2020-10-29 14:09:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-29 14:09:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1546 transitions. [2020-10-29 14:09:25,604 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1546 transitions. Word has length 126 [2020-10-29 14:09:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:25,607 INFO L481 AbstractCegarLoop]: Abstraction has 940 states and 1546 transitions. [2020-10-29 14:09:25,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1546 transitions. [2020-10-29 14:09:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 14:09:25,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:25,618 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] [2020-10-29 14:09:25,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:09:25,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:25,620 INFO L82 PathProgramCache]: Analyzing trace with hash -2120012127, now seen corresponding path program 1 times [2020-10-29 14:09:25,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:25,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328275802] [2020-10-29 14:09:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:26,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:30,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:30,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:30,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 14:09:30,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:09:30,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 14:09:30,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:30,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:30,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 14:09:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:31,304 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:09:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:31,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:31,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:31,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:31,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:09:31,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:31,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:31,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:31,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328275802] [2020-10-29 14:09:31,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:31,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:31,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196925682] [2020-10-29 14:09:31,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:31,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:31,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:31,418 INFO L87 Difference]: Start difference. First operand 940 states and 1546 transitions. Second operand 5 states. [2020-10-29 14:09:34,300 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:09:34,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:34,488 INFO L93 Difference]: Finished difference Result 2709 states and 4445 transitions. [2020-10-29 14:09:34,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:34,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 14:09:34,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:34,502 INFO L225 Difference]: With dead ends: 2709 [2020-10-29 14:09:34,502 INFO L226 Difference]: Without dead ends: 1822 [2020-10-29 14:09:34,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-10-29 14:09:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1819. [2020-10-29 14:09:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1819 states. [2020-10-29 14:09:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2970 transitions. [2020-10-29 14:09:34,650 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2970 transitions. Word has length 127 [2020-10-29 14:09:34,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:34,650 INFO L481 AbstractCegarLoop]: Abstraction has 1819 states and 2970 transitions. [2020-10-29 14:09:34,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2970 transitions. [2020-10-29 14:09:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 14:09:34,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:34,656 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] [2020-10-29 14:09:34,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:09:34,656 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:34,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1667812316, now seen corresponding path program 1 times [2020-10-29 14:09:34,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:34,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760199259] [2020-10-29 14:09:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:34,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:35,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:39,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:39,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 14:09:39,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:09:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 14:09:39,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:39,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:39,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 14:09:39,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:40,318 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:09:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:40,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:40,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:40,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:09:40,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:40,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:40,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760199259] [2020-10-29 14:09:40,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:40,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:40,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196977007] [2020-10-29 14:09:40,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:40,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:40,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:40,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:40,468 INFO L87 Difference]: Start difference. First operand 1819 states and 2970 transitions. Second operand 5 states. [2020-10-29 14:09:43,458 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:09:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:43,658 INFO L93 Difference]: Finished difference Result 5281 states and 8606 transitions. [2020-10-29 14:09:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:43,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-29 14:09:43,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:43,681 INFO L225 Difference]: With dead ends: 5281 [2020-10-29 14:09:43,682 INFO L226 Difference]: Without dead ends: 3561 [2020-10-29 14:09:43,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:43,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-10-29 14:09:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3558. [2020-10-29 14:09:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2020-10-29 14:09:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5770 transitions. [2020-10-29 14:09:43,906 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5770 transitions. Word has length 128 [2020-10-29 14:09:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:43,907 INFO L481 AbstractCegarLoop]: Abstraction has 3558 states and 5770 transitions. [2020-10-29 14:09:43,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5770 transitions. [2020-10-29 14:09:43,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 14:09:43,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:43,914 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] [2020-10-29 14:09:43,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:09:43,915 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:43,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash 32832773, now seen corresponding path program 1 times [2020-10-29 14:09:43,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:43,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116180273] [2020-10-29 14:09:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:43,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:44,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:48,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 14:09:48,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:09:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 14:09:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:48,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:09:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:09:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 14:09:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:49,602 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:09:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:49,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:49,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:09:49,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:49,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:49,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:49,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116180273] [2020-10-29 14:09:49,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:49,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:09:49,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354820721] [2020-10-29 14:09:49,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:09:49,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:49,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:09:49,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:09:49,728 INFO L87 Difference]: Start difference. First operand 3558 states and 5770 transitions. Second operand 5 states. [2020-10-29 14:09:52,635 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:09:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:09:52,865 INFO L93 Difference]: Finished difference Result 10439 states and 16915 transitions. [2020-10-29 14:09:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:09:52,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-29 14:09:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:09:52,903 INFO L225 Difference]: With dead ends: 10439 [2020-10-29 14:09:52,903 INFO L226 Difference]: Without dead ends: 6896 [2020-10-29 14:09:52,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:09:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6896 states. [2020-10-29 14:09:53,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6896 to 6893. [2020-10-29 14:09:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6893 states. [2020-10-29 14:09:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6893 states to 6893 states and 11105 transitions. [2020-10-29 14:09:53,422 INFO L78 Accepts]: Start accepts. Automaton has 6893 states and 11105 transitions. Word has length 129 [2020-10-29 14:09:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:09:53,422 INFO L481 AbstractCegarLoop]: Abstraction has 6893 states and 11105 transitions. [2020-10-29 14:09:53,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:09:53,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6893 states and 11105 transitions. [2020-10-29 14:09:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-29 14:09:53,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:09:53,437 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] [2020-10-29 14:09:53,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:09:53,437 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:09:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:09:53,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1038182932, now seen corresponding path program 1 times [2020-10-29 14:09:53,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:09:53,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576401832] [2020-10-29 14:09:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:09:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:53,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:54,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:54,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:58,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:58,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 14:09:58,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:09:58,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 14:09:58,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:58,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:09:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 14:09:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 14:09:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:59,056 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:09:59,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:09:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:09:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:09:59,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:09:59,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:09:59,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:09:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 14:09:59,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:09:59,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:09:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:09:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:09:59,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:09:59,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:09:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:09:59,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576401832] [2020-10-29 14:09:59,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:09:59,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:09:59,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458103291] [2020-10-29 14:09:59,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:09:59,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:09:59,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:09:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:09:59,134 INFO L87 Difference]: Start difference. First operand 6893 states and 11105 transitions. Second operand 4 states. [2020-10-29 14:09:59,642 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-29 14:10:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:01,914 INFO L93 Difference]: Finished difference Result 15219 states and 24933 transitions. [2020-10-29 14:10:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:10:01,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-29 14:10:01,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:01,965 INFO L225 Difference]: With dead ends: 15219 [2020-10-29 14:10:01,965 INFO L226 Difference]: Without dead ends: 10904 [2020-10-29 14:10:01,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2020-10-29 14:10:02,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 10869. [2020-10-29 14:10:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10869 states. [2020-10-29 14:10:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10869 states to 10869 states and 17657 transitions. [2020-10-29 14:10:02,665 INFO L78 Accepts]: Start accepts. Automaton has 10869 states and 17657 transitions. Word has length 129 [2020-10-29 14:10:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:02,665 INFO L481 AbstractCegarLoop]: Abstraction has 10869 states and 17657 transitions. [2020-10-29 14:10:02,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:10:02,666 INFO L276 IsEmpty]: Start isEmpty. Operand 10869 states and 17657 transitions. [2020-10-29 14:10:02,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 14:10:02,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:02,682 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] [2020-10-29 14:10:02,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:10:02,682 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:02,683 INFO L82 PathProgramCache]: Analyzing trace with hash -502951751, now seen corresponding path program 1 times [2020-10-29 14:10:02,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:02,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618384828] [2020-10-29 14:10:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:03,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:07,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:07,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 14:10:07,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:10:07,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 14:10:07,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:07,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:07,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 14:10:07,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:08,436 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:10:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:08,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:08,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:08,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:08,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:08,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:10:08,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:08,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:08,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:08,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:08,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618384828] [2020-10-29 14:10:08,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:08,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:08,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277807181] [2020-10-29 14:10:08,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:08,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:08,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:08,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:08,534 INFO L87 Difference]: Start difference. First operand 10869 states and 17657 transitions. Second operand 5 states. [2020-10-29 14:10:12,040 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:10:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:12,586 INFO L93 Difference]: Finished difference Result 31624 states and 51312 transitions. [2020-10-29 14:10:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:10:12,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-29 14:10:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:12,664 INFO L225 Difference]: With dead ends: 31624 [2020-10-29 14:10:12,664 INFO L226 Difference]: Without dead ends: 21165 [2020-10-29 14:10:12,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:10:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21165 states. [2020-10-29 14:10:14,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21165 to 21162. [2020-10-29 14:10:14,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21162 states. [2020-10-29 14:10:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21162 states to 21162 states and 34124 transitions. [2020-10-29 14:10:14,081 INFO L78 Accepts]: Start accepts. Automaton has 21162 states and 34124 transitions. Word has length 132 [2020-10-29 14:10:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:14,082 INFO L481 AbstractCegarLoop]: Abstraction has 21162 states and 34124 transitions. [2020-10-29 14:10:14,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:10:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 21162 states and 34124 transitions. [2020-10-29 14:10:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 14:10:14,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:14,109 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] [2020-10-29 14:10:14,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:10:14,109 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:14,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1192662300, now seen corresponding path program 1 times [2020-10-29 14:10:14,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:14,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770256012] [2020-10-29 14:10:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:14,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:14,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:14,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:19,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 14:10:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:10:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:10:19,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:19,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 14:10:19,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:19,802 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:10:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:19,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:19,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770256012] [2020-10-29 14:10:19,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:19,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:19,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108436671] [2020-10-29 14:10:19,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:19,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:19,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:19,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:19,900 INFO L87 Difference]: Start difference. First operand 21162 states and 34124 transitions. Second operand 5 states. [2020-10-29 14:10:24,223 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:10:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:25,603 INFO L93 Difference]: Finished difference Result 62412 states and 100606 transitions. [2020-10-29 14:10:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:10:25,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-29 14:10:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:25,728 INFO L225 Difference]: With dead ends: 62412 [2020-10-29 14:10:25,728 INFO L226 Difference]: Without dead ends: 41489 [2020-10-29 14:10:25,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:10:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41489 states. [2020-10-29 14:10:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41489 to 41486. [2020-10-29 14:10:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41486 states. [2020-10-29 14:10:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41486 states to 41486 states and 66618 transitions. [2020-10-29 14:10:28,807 INFO L78 Accepts]: Start accepts. Automaton has 41486 states and 66618 transitions. Word has length 133 [2020-10-29 14:10:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:28,808 INFO L481 AbstractCegarLoop]: Abstraction has 41486 states and 66618 transitions. [2020-10-29 14:10:28,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:10:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 41486 states and 66618 transitions. [2020-10-29 14:10:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 14:10:28,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:28,849 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] [2020-10-29 14:10:28,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:10:28,849 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:28,850 INFO L82 PathProgramCache]: Analyzing trace with hash -935706356, now seen corresponding path program 1 times [2020-10-29 14:10:28,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:28,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151191344] [2020-10-29 14:10:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:29,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:30,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:33,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:33,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-29 14:10:33,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:10:33,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 14:10:33,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:33,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:10:33,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:10:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 14:10:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:34,516 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:10:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:34,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:34,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:10:34,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:34,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:34,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151191344] [2020-10-29 14:10:34,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:34,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:10:34,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200291820] [2020-10-29 14:10:34,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:10:34,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:10:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:10:34,593 INFO L87 Difference]: Start difference. First operand 41486 states and 66618 transitions. Second operand 5 states. [2020-10-29 14:10:39,518 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:10:42,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:10:42,507 INFO L93 Difference]: Finished difference Result 120952 states and 193990 transitions. [2020-10-29 14:10:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:10:42,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 14:10:42,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:10:42,664 INFO L225 Difference]: With dead ends: 120952 [2020-10-29 14:10:42,665 INFO L226 Difference]: Without dead ends: 80629 [2020-10-29 14:10:42,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:10:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80629 states. [2020-10-29 14:10:48,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80629 to 80626. [2020-10-29 14:10:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80626 states. [2020-10-29 14:10:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80626 states to 80626 states and 128482 transitions. [2020-10-29 14:10:48,713 INFO L78 Accepts]: Start accepts. Automaton has 80626 states and 128482 transitions. Word has length 134 [2020-10-29 14:10:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:10:48,714 INFO L481 AbstractCegarLoop]: Abstraction has 80626 states and 128482 transitions. [2020-10-29 14:10:48,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:10:48,714 INFO L276 IsEmpty]: Start isEmpty. Operand 80626 states and 128482 transitions. [2020-10-29 14:10:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 14:10:48,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:10:48,777 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] [2020-10-29 14:10:48,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:10:48,777 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:10:48,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:10:48,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1255732216, now seen corresponding path program 1 times [2020-10-29 14:10:48,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:10:48,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633810071] [2020-10-29 14:10:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:10:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:49,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:53,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 14:10:53,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:54,386 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:10:54,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:10:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:10:54,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:10:54,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:10:54,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:10:54,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:10:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:10:54,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:10:54,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:10:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:10:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:10:54,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:10:54,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:10:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:10:54,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633810071] [2020-10-29 14:10:54,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:10:54,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:10:54,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777008163] [2020-10-29 14:10:54,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:10:54,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:10:54,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:10:54,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:10:54,452 INFO L87 Difference]: Start difference. First operand 80626 states and 128482 transitions. Second operand 4 states. [2020-10-29 14:10:55,003 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-29 14:11:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:05,736 INFO L93 Difference]: Finished difference Result 198648 states and 320742 transitions. [2020-10-29 14:11:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:11:05,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-29 14:11:05,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:06,351 INFO L225 Difference]: With dead ends: 198648 [2020-10-29 14:11:06,351 INFO L226 Difference]: Without dead ends: 136821 [2020-10-29 14:11:06,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136821 states. [2020-10-29 14:11:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136821 to 136306. [2020-10-29 14:11:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136306 states. [2020-10-29 14:11:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136306 states to 136306 states and 216162 transitions. [2020-10-29 14:11:16,289 INFO L78 Accepts]: Start accepts. Automaton has 136306 states and 216162 transitions. Word has length 135 [2020-10-29 14:11:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:11:16,289 INFO L481 AbstractCegarLoop]: Abstraction has 136306 states and 216162 transitions. [2020-10-29 14:11:16,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:11:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 136306 states and 216162 transitions. [2020-10-29 14:11:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 14:11:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:11:16,359 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] [2020-10-29 14:11:16,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:11:16,360 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:11:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:11:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1263291896, now seen corresponding path program 1 times [2020-10-29 14:11:16,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:11:16,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228877910] [2020-10-29 14:11:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:11:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:16,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:16,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:17,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:20,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:21,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:21,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 14:11:21,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 14:11:21,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 14:11:21,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:21,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:11:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:11:21,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 14:11:21,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:22,012 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:11:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:11:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:11:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:11:22,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:11:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:11:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:11:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:11:22,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:11:22,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:11:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:11:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:11:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:11:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:11:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:11:22,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228877910] [2020-10-29 14:11:22,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:11:22,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:11:22,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286217605] [2020-10-29 14:11:22,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:11:22,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:11:22,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:11:22,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:11:22,101 INFO L87 Difference]: Start difference. First operand 136306 states and 216162 transitions. Second operand 5 states. [2020-10-29 14:11:31,169 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2020-10-29 14:11:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:11:46,032 INFO L93 Difference]: Finished difference Result 401494 states and 636401 transitions. [2020-10-29 14:11:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:11:46,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-29 14:11:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:11:46,605 INFO L225 Difference]: With dead ends: 401494 [2020-10-29 14:11:46,605 INFO L226 Difference]: Without dead ends: 265799 [2020-10-29 14:11:46,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:11:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265799 states. [2020-10-29 14:12:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265799 to 265796. [2020-10-29 14:12:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265796 states. [2020-10-29 14:12:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265796 states to 265796 states and 419411 transitions. [2020-10-29 14:12:08,913 INFO L78 Accepts]: Start accepts. Automaton has 265796 states and 419411 transitions. Word has length 139 [2020-10-29 14:12:08,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:12:08,913 INFO L481 AbstractCegarLoop]: Abstraction has 265796 states and 419411 transitions. [2020-10-29 14:12:08,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:12:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 265796 states and 419411 transitions. [2020-10-29 14:12:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 14:12:09,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:12:09,010 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] [2020-10-29 14:12:09,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:12:09,010 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:12:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:12:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1495159035, now seen corresponding path program 1 times [2020-10-29 14:12:09,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:12:09,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973582661] [2020-10-29 14:12:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:12:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:09,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:11,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:11,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:12,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:14,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 14:12:14,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:14,689 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 14:12:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:12:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:12:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:12:14,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:12:14,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:12:14,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:12:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:12:14,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:12:14,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:12:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:12:14,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:12:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:12:14,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:12:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:12:14,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973582661] [2020-10-29 14:12:14,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:12:14,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:12:14,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840873538] [2020-10-29 14:12:14,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:12:14,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:12:14,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:12:14,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:12:14,764 INFO L87 Difference]: Start difference. First operand 265796 states and 419411 transitions. Second operand 5 states. [2020-10-29 14:12:31,483 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 295