/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 20:41:44,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 20:41:44,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 20:41:44,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 20:41:44,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 20:41:44,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 20:41:44,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 20:41:44,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 20:41:44,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 20:41:44,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 20:41:44,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 20:41:44,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 20:41:44,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 20:41:44,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 20:41:44,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 20:41:44,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 20:41:44,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 20:41:44,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 20:41:44,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 20:41:44,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 20:41:44,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 20:41:44,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 20:41:44,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 20:41:44,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 20:41:44,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 20:41:44,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 20:41:44,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 20:41:44,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 20:41:44,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 20:41:44,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-26 20:41:44,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 20:41:44,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 20:41:44,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 20:41:44,814 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 [2020-10-26 20:41:44,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 20:41:44,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 20:41:44,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 20:41:44,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 20:41:44,845 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 20:41:44,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 20:41:44,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 20:41:44,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 20:41:44,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 20:41:44,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 20:41:44,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 20:41:44,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 20:41:44,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 20:41:44,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 20:41:44,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 20:41:44,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 20:41:44,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 20:41:44,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 20:41:44,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 20:41:44,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 20:41:44,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 20:41:44,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 20:41:44,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 20:41:44,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 20:41:44,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 20:41:44,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 20:41:44,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 20:41:44,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 20:41:44,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 20:41:44,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 20:41:45,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 20:41:45,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 20:41:45,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 20:41:45,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 20:41:45,280 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 20:41:45,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2020-10-26 20:41:45,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/937d8a7bb/6488fe7118984eabbcc0f87e836c8d95/FLAGce23324e9 [2020-10-26 20:41:46,200 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 20:41:46,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2020-10-26 20:41:46,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/937d8a7bb/6488fe7118984eabbcc0f87e836c8d95/FLAGce23324e9 [2020-10-26 20:41:46,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/937d8a7bb/6488fe7118984eabbcc0f87e836c8d95 [2020-10-26 20:41:46,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 20:41:46,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 20:41:46,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 20:41:46,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 20:41:46,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 20:41:46,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:41:46" (1/1) ... [2020-10-26 20:41:46,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767379e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:46, skipping insertion in model container [2020-10-26 20:41:46,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:41:46" (1/1) ... [2020-10-26 20:41:46,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 20:41:46,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 20:41:47,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:41:47,335 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 20:41:47,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 20:41:47,713 INFO L208 MainTranslator]: Completed translation [2020-10-26 20:41:47,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47 WrapperNode [2020-10-26 20:41:47,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 20:41:47,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 20:41:47,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 20:41:47,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 20:41:47,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (1/1) ... [2020-10-26 20:41:47,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (1/1) ... [2020-10-26 20:41:47,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (1/1) ... [2020-10-26 20:41:47,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (1/1) ... [2020-10-26 20:41:47,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (1/1) ... [2020-10-26 20:41:47,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (1/1) ... [2020-10-26 20:41:47,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (1/1) ... [2020-10-26 20:41:47,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 20:41:47,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 20:41:47,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 20:41:47,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 20:41:47,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (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 [2020-10-26 20:41:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 20:41:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 20:41:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 20:41:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 20:41:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 20:41:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 20:41:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 20:41:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 20:41:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 20:41:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 20:41:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 20:41:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 20:41:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 20:41:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 20:41:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 20:41:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 20:41:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 20:41:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 20:41:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 20:41:50,089 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 20:41:50,090 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 20:41:50,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:41:50 BoogieIcfgContainer [2020-10-26 20:41:50,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 20:41:50,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 20:41:50,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 20:41:50,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 20:41:50,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:41:46" (1/3) ... [2020-10-26 20:41:50,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4b6dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:41:50, skipping insertion in model container [2020-10-26 20:41:50,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:41:47" (2/3) ... [2020-10-26 20:41:50,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4b6dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:41:50, skipping insertion in model container [2020-10-26 20:41:50,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:41:50" (3/3) ... [2020-10-26 20:41:50,102 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label10.c [2020-10-26 20:41:50,114 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 20:41:50,120 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 20:41:50,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 20:41:50,165 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 20:41:50,166 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 20:41:50,166 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 20:41:50,166 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 20:41:50,166 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 20:41:50,166 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 20:41:50,166 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 20:41:50,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 20:41:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-26 20:41:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-26 20:41:50,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:41:50,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:41:50,240 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:41:50,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:41:50,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1917621056, now seen corresponding path program 1 times [2020-10-26 20:41:50,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:41:50,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407369801] [2020-10-26 20:41:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:41:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:41:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:41:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:41:54,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:41:54,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-26 20:41:54,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:41:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4118 [2020-10-26 20:41:54,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:41:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:41:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:41:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-26 20:41:54,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:41:55,345 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:41:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:41:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:41:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:41:55,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:41:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:41:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:41:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 20:41:55,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:41:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:41:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:41:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:41:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:41:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:41:55,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407369801] [2020-10-26 20:41:55,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:41:55,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 20:41:55,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037224960] [2020-10-26 20:41:55,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 20:41:55,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:41:55,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 20:41:55,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 20:41:55,611 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-26 20:41:55,872 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:41:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:41:59,074 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-26 20:41:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 20:41:59,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2020-10-26 20:41:59,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:41:59,102 INFO L225 Difference]: With dead ends: 889 [2020-10-26 20:41:59,102 INFO L226 Difference]: Without dead ends: 481 [2020-10-26 20:41:59,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 20:41:59,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-26 20:41:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-26 20:41:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-26 20:41:59,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-26 20:41:59,276 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 188 [2020-10-26 20:41:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:41:59,280 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-26 20:41:59,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 20:41:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-26 20:41:59,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-26 20:41:59,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:41:59,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:41:59,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 20:41:59,299 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:41:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:41:59,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1195115023, now seen corresponding path program 1 times [2020-10-26 20:41:59,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:41:59,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609601273] [2020-10-26 20:41:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:41:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:41:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:01,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:02,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:02,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-26 20:42:02,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:42:02,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3385 [2020-10-26 20:42:02,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:42:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:02,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 20:42:02,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:03,043 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:03,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:03,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:03,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:42:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:03,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:03,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:03,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:42:03,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:03,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 20:42:03,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:03,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:42:03,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:42:03,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609601273] [2020-10-26 20:42:03,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:42:03,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:42:03,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28126855] [2020-10-26 20:42:03,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:42:03,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:42:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:42:03,371 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 7 states. [2020-10-26 20:42:03,620 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-26 20:42:05,595 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:42:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:07,063 INFO L93 Difference]: Finished difference Result 1408 states and 2178 transitions. [2020-10-26 20:42:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:42:07,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-26 20:42:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:07,094 INFO L225 Difference]: With dead ends: 1408 [2020-10-26 20:42:07,094 INFO L226 Difference]: Without dead ends: 938 [2020-10-26 20:42:07,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:42:07,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-10-26 20:42:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 916. [2020-10-26 20:42:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2020-10-26 20:42:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1405 transitions. [2020-10-26 20:42:07,146 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1405 transitions. Word has length 197 [2020-10-26 20:42:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:07,147 INFO L481 AbstractCegarLoop]: Abstraction has 916 states and 1405 transitions. [2020-10-26 20:42:07,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:42:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1405 transitions. [2020-10-26 20:42:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-26 20:42:07,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:07,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:07,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 20:42:07,152 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:07,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:07,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1882041631, now seen corresponding path program 1 times [2020-10-26 20:42:07,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:07,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388142910] [2020-10-26 20:42:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:09,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-26 20:42:09,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:42:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2139 [2020-10-26 20:42:09,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:42:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:09,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:42:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:09,610 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:09,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:09,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:09,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:09,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:09,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 20:42:09,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:09,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:09,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:09,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-26 20:42:09,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 20:42:09,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-26 20:42:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:42:09,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388142910] [2020-10-26 20:42:09,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:42:09,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:42:09,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362097644] [2020-10-26 20:42:09,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:42:09,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:09,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:42:09,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:42:09,888 INFO L87 Difference]: Start difference. First operand 916 states and 1405 transitions. Second operand 7 states. [2020-10-26 20:42:10,110 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:42:12,946 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:42:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:13,858 INFO L93 Difference]: Finished difference Result 2785 states and 4343 transitions. [2020-10-26 20:42:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:42:13,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-10-26 20:42:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:13,871 INFO L225 Difference]: With dead ends: 2785 [2020-10-26 20:42:13,872 INFO L226 Difference]: Without dead ends: 1875 [2020-10-26 20:42:13,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:42:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2020-10-26 20:42:13,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1835. [2020-10-26 20:42:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-10-26 20:42:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2781 transitions. [2020-10-26 20:42:13,962 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2781 transitions. Word has length 200 [2020-10-26 20:42:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:13,963 INFO L481 AbstractCegarLoop]: Abstraction has 1835 states and 2781 transitions. [2020-10-26 20:42:13,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:42:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2781 transitions. [2020-10-26 20:42:13,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-26 20:42:13,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:13,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:13,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 20:42:13,971 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:13,972 INFO L82 PathProgramCache]: Analyzing trace with hash 427802195, now seen corresponding path program 1 times [2020-10-26 20:42:13,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:13,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167731748] [2020-10-26 20:42:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:14,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:16,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-26 20:42:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:42:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2559 [2020-10-26 20:42:16,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:42:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:16,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 20:42:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:16,781 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:16,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:16,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:16,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:16,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:16,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:42:16,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:16,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:16,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:17,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:17,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-26 20:42:17,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:17,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 20:42:17,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:17,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 20:42:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:42:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:42:17,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167731748] [2020-10-26 20:42:17,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:42:17,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:42:17,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936155721] [2020-10-26 20:42:17,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:42:17,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:17,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:42:17,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:42:17,191 INFO L87 Difference]: Start difference. First operand 1835 states and 2781 transitions. Second operand 7 states. [2020-10-26 20:42:17,460 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-26 20:42:18,880 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:42:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:20,942 INFO L93 Difference]: Finished difference Result 5538 states and 8492 transitions. [2020-10-26 20:42:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:42:20,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-26 20:42:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:20,973 INFO L225 Difference]: With dead ends: 5538 [2020-10-26 20:42:20,973 INFO L226 Difference]: Without dead ends: 3709 [2020-10-26 20:42:20,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:42:20,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2020-10-26 20:42:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3660. [2020-10-26 20:42:21,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3660 states. [2020-10-26 20:42:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5562 transitions. [2020-10-26 20:42:21,132 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5562 transitions. Word has length 206 [2020-10-26 20:42:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:21,133 INFO L481 AbstractCegarLoop]: Abstraction has 3660 states and 5562 transitions. [2020-10-26 20:42:21,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:42:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5562 transitions. [2020-10-26 20:42:21,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-26 20:42:21,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:21,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:21,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 20:42:21,146 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:21,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash -954213194, now seen corresponding path program 1 times [2020-10-26 20:42:21,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:21,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163256477] [2020-10-26 20:42:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:21,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:23,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:26,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:26,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-26 20:42:26,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:42:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 20:42:26,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:42:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:42:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:26,472 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:26,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:26,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:26,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:26,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:42:26,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:26,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:26,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:26,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:42:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:26,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:26,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-26 20:42:26,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:26,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 20:42:26,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 20:42:26,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:42:26,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 20:42:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:26,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:26,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:42:26,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 20:42:26,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:42:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 20:42:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:42:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:42:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:42:26,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163256477] [2020-10-26 20:42:26,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:42:26,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:42:26,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944933209] [2020-10-26 20:42:26,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:42:26,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:26,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:42:26,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:42:26,925 INFO L87 Difference]: Start difference. First operand 3660 states and 5562 transitions. Second operand 7 states. [2020-10-26 20:42:27,189 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:42:28,231 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:42:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:30,602 INFO L93 Difference]: Finished difference Result 7668 states and 11728 transitions. [2020-10-26 20:42:30,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:42:30,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2020-10-26 20:42:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:30,636 INFO L225 Difference]: With dead ends: 7668 [2020-10-26 20:42:30,637 INFO L226 Difference]: Without dead ends: 4441 [2020-10-26 20:42:30,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:42:30,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4441 states. [2020-10-26 20:42:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4441 to 4333. [2020-10-26 20:42:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4333 states. [2020-10-26 20:42:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4333 states to 4333 states and 6583 transitions. [2020-10-26 20:42:30,918 INFO L78 Accepts]: Start accepts. Automaton has 4333 states and 6583 transitions. Word has length 211 [2020-10-26 20:42:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:30,919 INFO L481 AbstractCegarLoop]: Abstraction has 4333 states and 6583 transitions. [2020-10-26 20:42:30,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:42:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4333 states and 6583 transitions. [2020-10-26 20:42:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-26 20:42:30,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:30,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:30,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 20:42:30,939 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:30,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1437600204, now seen corresponding path program 1 times [2020-10-26 20:42:30,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:30,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118756212] [2020-10-26 20:42:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:35,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:36,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-26 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 20:42:36,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:42:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 20:42:36,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 20:42:36,366 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:36,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:36,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:36,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:36,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:36,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:36,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 20:42:36,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:36,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:36,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:36,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 20:42:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 20:42:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:36,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:36,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:42:36,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:42:36,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:42:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-26 20:42:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:42:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:42:36,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118756212] [2020-10-26 20:42:36,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:42:36,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:42:36,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895977966] [2020-10-26 20:42:36,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:42:36,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:36,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:42:36,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:42:36,734 INFO L87 Difference]: Start difference. First operand 4333 states and 6583 transitions. Second operand 7 states. [2020-10-26 20:42:36,929 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:42:37,336 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:42:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:40,464 INFO L93 Difference]: Finished difference Result 13013 states and 20297 transitions. [2020-10-26 20:42:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:42:40,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-26 20:42:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:40,521 INFO L225 Difference]: With dead ends: 13013 [2020-10-26 20:42:40,521 INFO L226 Difference]: Without dead ends: 8686 [2020-10-26 20:42:40,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:42:40,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8686 states. [2020-10-26 20:42:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8686 to 8587. [2020-10-26 20:42:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8587 states. [2020-10-26 20:42:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8587 states to 8587 states and 12701 transitions. [2020-10-26 20:42:40,843 INFO L78 Accepts]: Start accepts. Automaton has 8587 states and 12701 transitions. Word has length 216 [2020-10-26 20:42:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:40,844 INFO L481 AbstractCegarLoop]: Abstraction has 8587 states and 12701 transitions. [2020-10-26 20:42:40,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:42:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 8587 states and 12701 transitions. [2020-10-26 20:42:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-26 20:42:40,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:40,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:40,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 20:42:40,872 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:40,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:40,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1285791480, now seen corresponding path program 1 times [2020-10-26 20:42:40,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:40,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405332727] [2020-10-26 20:42:40,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:41,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:44,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:44,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-26 20:42:44,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:42:44,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3487 [2020-10-26 20:42:44,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:44,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:42:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 20:42:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:44,626 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:44,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:44,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:44,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:44,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:42:44,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:42:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:44,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:44,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:44,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:42:44,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 20:42:44,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:42:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:44,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:42:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:44,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:44,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:44,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 20:42:44,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:42:44,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 20:42:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-26 20:42:44,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405332727] [2020-10-26 20:42:44,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:42:44,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:42:44,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795996926] [2020-10-26 20:42:44,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:42:44,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:44,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:42:44,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:42:44,945 INFO L87 Difference]: Start difference. First operand 8587 states and 12701 transitions. Second operand 7 states. [2020-10-26 20:42:45,130 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:42:48,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:48,597 INFO L93 Difference]: Finished difference Result 23782 states and 36875 transitions. [2020-10-26 20:42:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 20:42:48,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-10-26 20:42:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:48,704 INFO L225 Difference]: With dead ends: 23782 [2020-10-26 20:42:48,704 INFO L226 Difference]: Without dead ends: 16919 [2020-10-26 20:42:48,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:42:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16919 states. [2020-10-26 20:42:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16919 to 16724. [2020-10-26 20:42:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16724 states. [2020-10-26 20:42:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16724 states to 16724 states and 25205 transitions. [2020-10-26 20:42:49,435 INFO L78 Accepts]: Start accepts. Automaton has 16724 states and 25205 transitions. Word has length 218 [2020-10-26 20:42:49,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:49,436 INFO L481 AbstractCegarLoop]: Abstraction has 16724 states and 25205 transitions. [2020-10-26 20:42:49,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:42:49,436 INFO L276 IsEmpty]: Start isEmpty. Operand 16724 states and 25205 transitions. [2020-10-26 20:42:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-26 20:42:49,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:49,484 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:49,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 20:42:49,484 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:49,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:49,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1857207308, now seen corresponding path program 1 times [2020-10-26 20:42:49,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:49,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893605857] [2020-10-26 20:42:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:51,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:51,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-26 20:42:51,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:42:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-26 20:42:51,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:42:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:42:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-26 20:42:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 20:42:51,634 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:42:51,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:42:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:51,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:51,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:42:51,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:51,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:42:51,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:51,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:42:51,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:51,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:42:51,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:42:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:51,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:51,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:51,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:42:51,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:42:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 20:42:51,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:42:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:42:51,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:42:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:42:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:51,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:51,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:51,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:42:51,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:42:51,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 20:42:51,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:51,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:42:51,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:42:51,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:42:51,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:42:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 20:42:52,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893605857] [2020-10-26 20:42:52,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:42:52,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:42:52,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176906433] [2020-10-26 20:42:52,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 20:42:52,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:42:52,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 20:42:52,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 20:42:52,029 INFO L87 Difference]: Start difference. First operand 16724 states and 25205 transitions. Second operand 6 states. [2020-10-26 20:42:52,424 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:42:55,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:42:55,523 INFO L93 Difference]: Finished difference Result 49521 states and 77501 transitions. [2020-10-26 20:42:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:42:55,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 220 [2020-10-26 20:42:55,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:42:55,717 INFO L225 Difference]: With dead ends: 49521 [2020-10-26 20:42:55,718 INFO L226 Difference]: Without dead ends: 32803 [2020-10-26 20:42:55,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:42:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32803 states. [2020-10-26 20:42:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32803 to 32540. [2020-10-26 20:42:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32540 states. [2020-10-26 20:42:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32540 states to 32540 states and 49770 transitions. [2020-10-26 20:42:57,161 INFO L78 Accepts]: Start accepts. Automaton has 32540 states and 49770 transitions. Word has length 220 [2020-10-26 20:42:57,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:42:57,161 INFO L481 AbstractCegarLoop]: Abstraction has 32540 states and 49770 transitions. [2020-10-26 20:42:57,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 20:42:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 32540 states and 49770 transitions. [2020-10-26 20:42:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-26 20:42:57,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:42:57,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:42:57,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 20:42:57,261 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:42:57,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:42:57,262 INFO L82 PathProgramCache]: Analyzing trace with hash 962925288, now seen corresponding path program 1 times [2020-10-26 20:42:57,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:42:57,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208243437] [2020-10-26 20:42:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:42:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:42:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:42:59,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:42:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 20:42:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:42:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2520 [2020-10-26 20:42:59,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:42:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:42:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:42:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:42:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,053 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:00,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:00,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 20:43:00,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:00,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:00,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:43:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 20:43:00,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:00,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:43:00,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:00,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:00,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:00,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 20:43:00,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:00,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 20:43:00,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:00,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 20:43:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 20:43:00,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208243437] [2020-10-26 20:43:00,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:00,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:43:00,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43822597] [2020-10-26 20:43:00,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:43:00,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:00,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:43:00,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:43:00,424 INFO L87 Difference]: Start difference. First operand 32540 states and 49770 transitions. Second operand 7 states. [2020-10-26 20:43:00,632 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:43:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:02,655 INFO L93 Difference]: Finished difference Result 63035 states and 97110 transitions. [2020-10-26 20:43:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 20:43:02,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-26 20:43:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:02,837 INFO L225 Difference]: With dead ends: 63035 [2020-10-26 20:43:02,837 INFO L226 Difference]: Without dead ends: 30501 [2020-10-26 20:43:03,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:43:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30501 states. [2020-10-26 20:43:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30501 to 30465. [2020-10-26 20:43:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30465 states. [2020-10-26 20:43:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30465 states to 30465 states and 45606 transitions. [2020-10-26 20:43:04,194 INFO L78 Accepts]: Start accepts. Automaton has 30465 states and 45606 transitions. Word has length 226 [2020-10-26 20:43:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:04,195 INFO L481 AbstractCegarLoop]: Abstraction has 30465 states and 45606 transitions. [2020-10-26 20:43:04,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:43:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 30465 states and 45606 transitions. [2020-10-26 20:43:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-26 20:43:04,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:04,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:04,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 20:43:04,292 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1721098033, now seen corresponding path program 1 times [2020-10-26 20:43:04,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:04,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15046303] [2020-10-26 20:43:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:05,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:09,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:09,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:09,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-26 20:43:09,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 20:43:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-26 20:43:09,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:09,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:09,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:43:09,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-26 20:43:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:09,860 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:09,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:09,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:09,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 20:43:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:43:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:43:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:09,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:09,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:10,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:10,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 20:43:10,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:10,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:43:10,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:10,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:10,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:10,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 20:43:10,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:10,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 20:43:10,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 20:43:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:10,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-26 20:43:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:10,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:10,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:43:10,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:43:10,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:43:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:43:10,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:43:10,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 44 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-26 20:43:10,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15046303] [2020-10-26 20:43:10,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:10,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:43:10,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868687606] [2020-10-26 20:43:10,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:43:10,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:10,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:43:10,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:43:10,193 INFO L87 Difference]: Start difference. First operand 30465 states and 45606 transitions. Second operand 8 states. [2020-10-26 20:43:10,361 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:43:10,741 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:43:11,813 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:43:15,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:15,843 INFO L93 Difference]: Finished difference Result 97351 states and 151149 transitions. [2020-10-26 20:43:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 20:43:15,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-26 20:43:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:16,152 INFO L225 Difference]: With dead ends: 97351 [2020-10-26 20:43:16,152 INFO L226 Difference]: Without dead ends: 66892 [2020-10-26 20:43:16,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 20:43:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66892 states. [2020-10-26 20:43:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66892 to 66706. [2020-10-26 20:43:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66706 states. [2020-10-26 20:43:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66706 states to 66706 states and 86827 transitions. [2020-10-26 20:43:18,804 INFO L78 Accepts]: Start accepts. Automaton has 66706 states and 86827 transitions. Word has length 230 [2020-10-26 20:43:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:18,804 INFO L481 AbstractCegarLoop]: Abstraction has 66706 states and 86827 transitions. [2020-10-26 20:43:18,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:43:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 66706 states and 86827 transitions. [2020-10-26 20:43:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-26 20:43:18,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:18,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:18,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 20:43:18,846 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:18,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:18,846 INFO L82 PathProgramCache]: Analyzing trace with hash 48332866, now seen corresponding path program 1 times [2020-10-26 20:43:18,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:18,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976826885] [2020-10-26 20:43:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:19,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:20,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:20,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-26 20:43:20,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:43:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-26 20:43:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:43:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:43:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:21,053 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:43:21,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:21,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:21,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:43:21,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 20:43:21,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:21,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:43:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 20:43:21,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976826885] [2020-10-26 20:43:21,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 20:43:21,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 20:43:21,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712087430] [2020-10-26 20:43:21,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:43:21,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:21,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:43:21,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:43:21,348 INFO L87 Difference]: Start difference. First operand 66706 states and 86827 transitions. Second operand 7 states. [2020-10-26 20:43:21,554 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 20:43:22,570 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-26 20:43:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:26,874 INFO L93 Difference]: Finished difference Result 137477 states and 188190 transitions. [2020-10-26 20:43:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 20:43:26,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-26 20:43:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:27,470 INFO L225 Difference]: With dead ends: 137477 [2020-10-26 20:43:27,471 INFO L226 Difference]: Without dead ends: 72670 [2020-10-26 20:43:27,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 20:43:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72670 states. [2020-10-26 20:43:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72670 to 71418. [2020-10-26 20:43:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71418 states. [2020-10-26 20:43:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71418 states to 71418 states and 92532 transitions. [2020-10-26 20:43:30,313 INFO L78 Accepts]: Start accepts. Automaton has 71418 states and 92532 transitions. Word has length 233 [2020-10-26 20:43:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:30,314 INFO L481 AbstractCegarLoop]: Abstraction has 71418 states and 92532 transitions. [2020-10-26 20:43:30,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:43:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 71418 states and 92532 transitions. [2020-10-26 20:43:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-26 20:43:30,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:30,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:30,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 20:43:30,382 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1759209929, now seen corresponding path program 1 times [2020-10-26 20:43:30,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:30,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268485540] [2020-10-26 20:43:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3593 [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 20:43:34,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:34,228 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:34,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:34,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:34,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:34,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 20:43:34,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:34,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:34,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:34,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:34,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:43:34,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 20:43:34,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 20:43:34,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:34,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 20:43:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:43:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:34,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:34,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:43:34,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-26 20:43:34,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:43:34,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:34,839 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-26 20:43:34,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268485540] [2020-10-26 20:43:34,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:34,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 20:43:34,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025228631] [2020-10-26 20:43:34,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:43:34,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:34,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:43:34,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:43:34,842 INFO L87 Difference]: Start difference. First operand 71418 states and 92532 transitions. Second operand 7 states. [2020-10-26 20:43:35,044 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:43:36,543 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:43:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:39,068 INFO L93 Difference]: Finished difference Result 160408 states and 212703 transitions. [2020-10-26 20:43:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 20:43:39,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-26 20:43:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:39,447 INFO L225 Difference]: With dead ends: 160408 [2020-10-26 20:43:39,448 INFO L226 Difference]: Without dead ends: 95597 [2020-10-26 20:43:39,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 20:43:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95597 states. [2020-10-26 20:43:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95597 to 95041. [2020-10-26 20:43:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95041 states. [2020-10-26 20:43:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95041 states to 95041 states and 121714 transitions. [2020-10-26 20:43:43,123 INFO L78 Accepts]: Start accepts. Automaton has 95041 states and 121714 transitions. Word has length 254 [2020-10-26 20:43:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:43,123 INFO L481 AbstractCegarLoop]: Abstraction has 95041 states and 121714 transitions. [2020-10-26 20:43:43,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:43:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 95041 states and 121714 transitions. [2020-10-26 20:43:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-26 20:43:43,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:43,183 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:43,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 20:43:43,184 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash 690151557, now seen corresponding path program 1 times [2020-10-26 20:43:43,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:43,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335939203] [2020-10-26 20:43:43,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:43,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:48,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:48,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-26 20:43:48,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 20:43:48,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 20:43:48,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:43:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:43:48,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 20:43:48,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:48,477 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:43:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:43:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:48,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:43:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 20:43:48,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:43:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:43:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:43:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:48,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:43:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:48,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:48,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:48,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:43:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 20:43:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:43:48,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:43:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:48,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:43:48,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 20:43:48,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:43:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:43:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 20:43:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-26 20:43:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:43:48,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:43:48,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:43:48,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:43:48,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:43:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:43:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 20:43:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:43:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:43:48,917 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 88 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 20:43:48,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335939203] [2020-10-26 20:43:48,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:43:48,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:43:48,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146988182] [2020-10-26 20:43:48,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:43:48,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:43:48,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:43:48,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:43:48,919 INFO L87 Difference]: Start difference. First operand 95041 states and 121714 transitions. Second operand 8 states. [2020-10-26 20:43:49,125 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:43:50,920 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:43:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:43:53,641 INFO L93 Difference]: Finished difference Result 197534 states and 253730 transitions. [2020-10-26 20:43:53,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 20:43:53,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2020-10-26 20:43:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:43:53,999 INFO L225 Difference]: With dead ends: 197534 [2020-10-26 20:43:53,999 INFO L226 Difference]: Without dead ends: 104806 [2020-10-26 20:43:54,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 20:43:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104806 states. [2020-10-26 20:43:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104806 to 104595. [2020-10-26 20:43:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104595 states. [2020-10-26 20:43:57,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104595 states to 104595 states and 133549 transitions. [2020-10-26 20:43:57,055 INFO L78 Accepts]: Start accepts. Automaton has 104595 states and 133549 transitions. Word has length 276 [2020-10-26 20:43:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:43:57,056 INFO L481 AbstractCegarLoop]: Abstraction has 104595 states and 133549 transitions. [2020-10-26 20:43:57,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:43:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 104595 states and 133549 transitions. [2020-10-26 20:43:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-26 20:43:57,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:43:57,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:43:57,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 20:43:57,127 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:43:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:43:57,128 INFO L82 PathProgramCache]: Analyzing trace with hash 118125001, now seen corresponding path program 1 times [2020-10-26 20:43:57,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:43:57,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950472013] [2020-10-26 20:43:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:43:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:43:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:57,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:43:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:02,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-26 20:44:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:02,427 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:02,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:02,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:02,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:02,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:02,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 20:44:02,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:02,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 20:44:02,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:02,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 20:44:02,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 20:44:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:02,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:44:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 20:44:02,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:44:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:02,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 20:44:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:02,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:02,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-26 20:44:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:02,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:02,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:44:02,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 20:44:02,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 20:44:02,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:02,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 114 proven. 66 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-26 20:44:03,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950472013] [2020-10-26 20:44:03,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:03,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:44:03,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440072266] [2020-10-26 20:44:03,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:44:03,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:03,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:44:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:44:03,116 INFO L87 Difference]: Start difference. First operand 104595 states and 133549 transitions. Second operand 7 states. [2020-10-26 20:44:03,309 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:44:04,950 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-26 20:44:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:44:07,033 INFO L93 Difference]: Finished difference Result 207218 states and 264914 transitions. [2020-10-26 20:44:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:44:07,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-26 20:44:07,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:44:07,680 INFO L225 Difference]: With dead ends: 207218 [2020-10-26 20:44:07,680 INFO L226 Difference]: Without dead ends: 103463 [2020-10-26 20:44:07,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:44:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103463 states. [2020-10-26 20:44:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103463 to 103337. [2020-10-26 20:44:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103337 states. [2020-10-26 20:44:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103337 states to 103337 states and 132113 transitions. [2020-10-26 20:44:10,656 INFO L78 Accepts]: Start accepts. Automaton has 103337 states and 132113 transitions. Word has length 314 [2020-10-26 20:44:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:44:10,657 INFO L481 AbstractCegarLoop]: Abstraction has 103337 states and 132113 transitions. [2020-10-26 20:44:10,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:44:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 103337 states and 132113 transitions. [2020-10-26 20:44:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-26 20:44:10,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:10,731 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:44:10,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 20:44:10,732 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:10,732 INFO L82 PathProgramCache]: Analyzing trace with hash 413012865, now seen corresponding path program 2 times [2020-10-26 20:44:10,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:10,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700169663] [2020-10-26 20:44:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:10,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:15,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-26 20:44:15,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:16,064 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:16,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 20:44:16,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:16,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:16,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:16,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:44:16,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 20:44:16,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:16,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 20:44:16,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:16,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-26 20:44:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:16,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 20:44:16,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 20:44:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-26 20:44:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-26 20:44:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:16,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:16,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 20:44:16,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:16,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 20:44:16,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-26 20:44:16,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:16,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:16,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-26 20:44:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:16,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:44:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 20:44:16,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-26 20:44:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 127 proven. 74 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-26 20:44:16,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700169663] [2020-10-26 20:44:16,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:16,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 20:44:16,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557990405] [2020-10-26 20:44:16,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 20:44:16,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:16,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 20:44:16,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 20:44:16,704 INFO L87 Difference]: Start difference. First operand 103337 states and 132113 transitions. Second operand 8 states. [2020-10-26 20:44:16,916 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-26 20:44:18,503 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-26 20:44:21,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:44:21,568 INFO L93 Difference]: Finished difference Result 230568 states and 298541 transitions. [2020-10-26 20:44:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 20:44:21,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 314 [2020-10-26 20:44:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:44:21,951 INFO L225 Difference]: With dead ends: 230568 [2020-10-26 20:44:21,951 INFO L226 Difference]: Without dead ends: 130173 [2020-10-26 20:44:22,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-26 20:44:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130173 states. [2020-10-26 20:44:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130173 to 129590. [2020-10-26 20:44:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129590 states. [2020-10-26 20:44:25,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129590 states to 129590 states and 165882 transitions. [2020-10-26 20:44:25,313 INFO L78 Accepts]: Start accepts. Automaton has 129590 states and 165882 transitions. Word has length 314 [2020-10-26 20:44:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:44:25,313 INFO L481 AbstractCegarLoop]: Abstraction has 129590 states and 165882 transitions. [2020-10-26 20:44:25,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 20:44:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 129590 states and 165882 transitions. [2020-10-26 20:44:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-26 20:44:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:25,439 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:44:25,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 20:44:25,440 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash 228153440, now seen corresponding path program 1 times [2020-10-26 20:44:25,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:25,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543581018] [2020-10-26 20:44:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 20:44:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:30,735 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:30,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:30,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:30,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:44:30,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 20:44:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:31,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:31,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 20:44:31,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:31,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 20:44:31,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:31,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:31,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:31,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 20:44:31,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:31,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-26 20:44:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:31,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:31,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:31,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-26 20:44:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:44:31,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-26 20:44:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:31,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-26 20:44:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 20:44:31,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:31,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 20:44:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-26 20:44:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 119 proven. 39 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-26 20:44:31,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543581018] [2020-10-26 20:44:31,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:31,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 20:44:31,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688671329] [2020-10-26 20:44:31,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 20:44:31,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:31,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 20:44:31,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 20:44:31,268 INFO L87 Difference]: Start difference. First operand 129590 states and 165882 transitions. Second operand 7 states. [2020-10-26 20:44:31,518 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-26 20:44:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:44:36,604 INFO L93 Difference]: Finished difference Result 275941 states and 359633 transitions. [2020-10-26 20:44:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 20:44:36,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-26 20:44:36,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:44:37,143 INFO L225 Difference]: With dead ends: 275941 [2020-10-26 20:44:37,143 INFO L226 Difference]: Without dead ends: 159306 [2020-10-26 20:44:37,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 20:44:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159306 states. [2020-10-26 20:44:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159306 to 156080. [2020-10-26 20:44:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156080 states. [2020-10-26 20:44:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156080 states to 156080 states and 203855 transitions. [2020-10-26 20:44:41,525 INFO L78 Accepts]: Start accepts. Automaton has 156080 states and 203855 transitions. Word has length 316 [2020-10-26 20:44:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:44:41,526 INFO L481 AbstractCegarLoop]: Abstraction has 156080 states and 203855 transitions. [2020-10-26 20:44:41,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 20:44:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 156080 states and 203855 transitions. [2020-10-26 20:44:41,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-26 20:44:41,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:44:41,634 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:44:41,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 20:44:41,634 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:44:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:44:41,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1255957372, now seen corresponding path program 1 times [2020-10-26 20:44:41,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:44:41,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567580088] [2020-10-26 20:44:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:44:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:41,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:43,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:46,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:46,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-26 20:44:46,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 20:44:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 20:44:46,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 20:44:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-26 20:44:46,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 20:44:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:46,994 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-26 20:44:46,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:44:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:47,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:47,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:44:47,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 20:44:47,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:44:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:44:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 20:44:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:47,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:47,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:47,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 20:44:47,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:47,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 20:44:47,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:44:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:44:47,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 20:44:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:47,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-26 20:44:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:47,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:47,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-26 20:44:47,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-26 20:44:47,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:47,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 20:44:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:47,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-26 20:44:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:44:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:44:47,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:44:47,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 20:44:47,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:44:47,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 20:44:47,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:44:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 20:44:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 20:44:47,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 20:44:47,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:44:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 171 proven. 48 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 20:44:47,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567580088] [2020-10-26 20:44:47,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:44:47,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 20:44:47,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723321093] [2020-10-26 20:44:47,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 20:44:47,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:44:47,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 20:44:47,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 20:44:47,668 INFO L87 Difference]: Start difference. First operand 156080 states and 203855 transitions. Second operand 9 states. [2020-10-26 20:44:48,082 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-26 20:44:49,440 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-26 20:44:49,970 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 161