/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=NARROWEST --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 -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:15:50,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:15:50,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:15:50,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:15:50,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:15:50,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:15:50,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:15:50,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:15:50,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:15:50,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:15:50,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:15:50,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:15:50,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:15:50,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:15:50,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:15:50,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:15:50,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:15:50,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:15:50,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:15:50,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:15:50,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:15:50,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:15:50,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:15:50,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:15:50,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:15:50,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:15:50,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:15:50,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:15:50,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:15:50,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:15:50,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:15:50,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:15:50,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:15:50,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:15:50,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:15:50,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:15:50,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:15:50,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:15:50,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:15:50,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:15:50,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:15:50,182 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 [2020-10-13 13:15:50,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:15:50,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:15:50,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:15:50,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:15:50,207 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:15:50,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:15:50,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:15:50,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:15:50,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:15:50,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:15:50,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:15:50,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:15:50,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:15:50,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:15:50,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:15:50,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:15:50,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:15:50,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:15:50,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:15:50,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:15:50,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:15:50,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:15:50,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:15:50,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:15:50,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:15:50,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:15:50,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:15:50,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:15:50,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:15:50,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:15:50,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:15:50,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:15:50,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:15:50,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:15:50,545 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:15:50,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:50,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f7f2079d/a9fea0f2960e4fdea09096782d6b99fa/FLAG77d0559d0 [2020-10-13 13:15:51,063 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:15:51,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:51,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f7f2079d/a9fea0f2960e4fdea09096782d6b99fa/FLAG77d0559d0 [2020-10-13 13:15:51,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f7f2079d/a9fea0f2960e4fdea09096782d6b99fa [2020-10-13 13:15:51,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:15:51,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:15:51,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:51,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:15:51,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:15:51,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:51" (1/1) ... [2020-10-13 13:15:51,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e399bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:51, skipping insertion in model container [2020-10-13 13:15:51,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:15:51" (1/1) ... [2020-10-13 13:15:51,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:15:51,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:15:51,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:51,967 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:15:52,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:15:52,060 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:15:52,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52 WrapperNode [2020-10-13 13:15:52,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:15:52,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:15:52,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:15:52,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:15:52,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (1/1) ... [2020-10-13 13:15:52,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (1/1) ... [2020-10-13 13:15:52,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (1/1) ... [2020-10-13 13:15:52,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (1/1) ... [2020-10-13 13:15:52,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (1/1) ... [2020-10-13 13:15:52,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (1/1) ... [2020-10-13 13:15:52,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (1/1) ... [2020-10-13 13:15:52,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:15:52,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:15:52,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:15:52,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:15:52,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (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 [2020-10-13 13:15:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:15:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:15:52,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:15:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:15:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:15:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:15:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:15:52,253 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:15:52,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:15:52,254 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:15:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:15:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:15:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:15:52,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:15:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:15:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:15:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:15:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:15:52,255 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:15:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:15:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:15:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:15:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:15:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:15:52,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:15:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:15:52,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:15:53,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:15:53,126 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:15:53,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:53 BoogieIcfgContainer [2020-10-13 13:15:53,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:15:53,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:15:53,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:15:53,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:15:53,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:15:51" (1/3) ... [2020-10-13 13:15:53,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370d8726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:53, skipping insertion in model container [2020-10-13 13:15:53,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:15:52" (2/3) ... [2020-10-13 13:15:53,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370d8726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:15:53, skipping insertion in model container [2020-10-13 13:15:53,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:15:53" (3/3) ... [2020-10-13 13:15:53,141 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:15:53,153 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:15:53,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:15:53,174 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:15:53,198 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:15:53,198 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:15:53,198 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:15:53,198 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:15:53,199 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:15:53,199 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:15:53,199 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:15:53,199 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:15:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-13 13:15:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:15:53,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:53,249 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] [2020-10-13 13:15:53,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:53,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash 374272121, now seen corresponding path program 1 times [2020-10-13 13:15:53,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:53,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771242368] [2020-10-13 13:15:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:15:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-13 13:15:54,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:15:54,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:15:54,314 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:54,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:15:54,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:54,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:54,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:54,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:15:54,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:15:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:15:54,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:15:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:54,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:15:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:15:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:54,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:15:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:54,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:15:54,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:15:54,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:15:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:54,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:54,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:15:54,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:54,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:15:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:54,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:54,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:54,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:15:54,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:15:54,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771242368] [2020-10-13 13:15:54,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:54,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:15:54,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043607422] [2020-10-13 13:15:54,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:15:54,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:54,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:15:54,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:15:54,650 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 6 states. [2020-10-13 13:15:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:55,766 INFO L93 Difference]: Finished difference Result 257 states and 411 transitions. [2020-10-13 13:15:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:15:55,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-13 13:15:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:55,781 INFO L225 Difference]: With dead ends: 257 [2020-10-13 13:15:55,781 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 13:15:55,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:15:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 13:15:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 153. [2020-10-13 13:15:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 13:15:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 246 transitions. [2020-10-13 13:15:55,859 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 246 transitions. Word has length 62 [2020-10-13 13:15:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:55,860 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 246 transitions. [2020-10-13 13:15:55,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:15:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 246 transitions. [2020-10-13 13:15:55,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:15:55,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:55,864 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] [2020-10-13 13:15:55,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:15:55,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:55,865 INFO L82 PathProgramCache]: Analyzing trace with hash -469733381, now seen corresponding path program 1 times [2020-10-13 13:15:55,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:55,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442017829] [2020-10-13 13:15:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:15:56,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-13 13:15:56,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:15:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:15:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:15:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,792 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:15:56,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:15:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:15:56,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:15:56,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:15:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:15:56,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:15:56,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:15:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:15:56,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:15:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:56,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:56,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:15:56,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:56,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:56,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:15:56,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:15:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:15:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:15:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:15:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:15:57,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:15:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:57,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:15:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:15:57,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:15:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:15:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:15:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:15:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:15:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:15:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:15:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:15:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:15:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:15:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:15:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:15:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:15:57,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442017829] [2020-10-13 13:15:57,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:15:57,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:15:57,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524771871] [2020-10-13 13:15:57,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:15:57,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:15:57,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:15:57,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:15:57,148 INFO L87 Difference]: Start difference. First operand 153 states and 246 transitions. Second operand 12 states. [2020-10-13 13:15:57,677 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:15:57,873 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 13:15:58,152 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:15:58,370 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:15:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:15:59,904 INFO L93 Difference]: Finished difference Result 255 states and 403 transitions. [2020-10-13 13:15:59,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:15:59,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2020-10-13 13:15:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:15:59,908 INFO L225 Difference]: With dead ends: 255 [2020-10-13 13:15:59,908 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 13:15:59,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:15:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 13:15:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 153. [2020-10-13 13:15:59,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 13:15:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 219 transitions. [2020-10-13 13:15:59,934 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 219 transitions. Word has length 62 [2020-10-13 13:15:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:15:59,934 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 219 transitions. [2020-10-13 13:15:59,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:15:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 219 transitions. [2020-10-13 13:15:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:15:59,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:15:59,938 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] [2020-10-13 13:15:59,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:15:59,939 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:15:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:15:59,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1874426094, now seen corresponding path program 1 times [2020-10-13 13:15:59,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:15:59,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747159925] [2020-10-13 13:15:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:15:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:16:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:16:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 13:16:05,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:16:05,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:16:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:05,248 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:05,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:16:05,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:05,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:05,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:16:05,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:05,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:16:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:05,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:05,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:05,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:05,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:16:05,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:16:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:05,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:05,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:16:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:05,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:05,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:16:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:05,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:05,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:05,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:05,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:05,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:05,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:05,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747159925] [2020-10-13 13:16:05,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:05,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:05,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382408310] [2020-10-13 13:16:05,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:05,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:05,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:05,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:05,585 INFO L87 Difference]: Start difference. First operand 153 states and 219 transitions. Second operand 9 states. [2020-10-13 13:16:05,761 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:06,423 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-13 13:16:07,488 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:16:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:07,933 INFO L93 Difference]: Finished difference Result 347 states and 520 transitions. [2020-10-13 13:16:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:16:07,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:16:07,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:07,938 INFO L225 Difference]: With dead ends: 347 [2020-10-13 13:16:07,938 INFO L226 Difference]: Without dead ends: 263 [2020-10-13 13:16:07,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:16:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-13 13:16:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 231. [2020-10-13 13:16:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-13 13:16:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2020-10-13 13:16:07,999 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 88 [2020-10-13 13:16:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:08,001 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2020-10-13 13:16:08,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2020-10-13 13:16:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:16:08,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:08,015 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] [2020-10-13 13:16:08,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:16:08,015 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:08,015 INFO L82 PathProgramCache]: Analyzing trace with hash -195661791, now seen corresponding path program 1 times [2020-10-13 13:16:08,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:08,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84714559] [2020-10-13 13:16:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:16:13,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:16:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:16:13,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:16:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 13:16:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:16:13,324 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:13,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:13,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:13,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:13,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:13,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:16:13,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:13,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:16:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:13,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:13,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:13,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:16:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:13,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:16:13,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:13,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:13,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:16:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:13,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:13,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:13,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:16:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:13,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:13,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:13,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:16:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:13,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84714559] [2020-10-13 13:16:13,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:13,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:13,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125646434] [2020-10-13 13:16:13,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:13,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:13,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:13,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:13,605 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand 9 states. [2020-10-13 13:16:13,771 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:15,596 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:16:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:15,763 INFO L93 Difference]: Finished difference Result 599 states and 888 transitions. [2020-10-13 13:16:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:16:15,767 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:16:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:15,772 INFO L225 Difference]: With dead ends: 599 [2020-10-13 13:16:15,772 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 13:16:15,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:16:15,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 13:16:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 381. [2020-10-13 13:16:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-13 13:16:15,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 558 transitions. [2020-10-13 13:16:15,823 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 558 transitions. Word has length 90 [2020-10-13 13:16:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:15,823 INFO L479 AbstractCegarLoop]: Abstraction has 381 states and 558 transitions. [2020-10-13 13:16:15,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 558 transitions. [2020-10-13 13:16:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:16:15,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:15,826 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] [2020-10-13 13:16:15,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:16:15,826 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:15,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:15,827 INFO L82 PathProgramCache]: Analyzing trace with hash -383169648, now seen corresponding path program 1 times [2020-10-13 13:16:15,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:15,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238885852] [2020-10-13 13:16:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:15,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:17,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:20,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:20,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:16:20,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:16:20,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:16:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:16:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 13:16:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,041 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:21,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:21,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:21,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:21,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:21,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:21,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:21,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:16:21,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:21,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:21,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:21,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:16:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:21,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:21,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:21,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:21,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:21,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:21,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:21,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:21,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:16:21,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:21,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:21,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:21,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:16:21,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:21,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:21,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:21,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:16:21,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:21,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:21,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:16:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:21,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:21,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:21,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:21,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:21,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:16:21,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:16:21,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:21,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238885852] [2020-10-13 13:16:21,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:21,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:16:21,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124609261] [2020-10-13 13:16:21,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:16:21,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:21,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:16:21,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:16:21,375 INFO L87 Difference]: Start difference. First operand 381 states and 558 transitions. Second operand 13 states. [2020-10-13 13:16:21,554 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:21,953 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:16:22,117 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:23,878 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:16:24,033 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:16:24,240 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:27,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:27,184 INFO L93 Difference]: Finished difference Result 2167 states and 3282 transitions. [2020-10-13 13:16:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 13:16:27,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-10-13 13:16:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:27,206 INFO L225 Difference]: With dead ends: 2167 [2020-10-13 13:16:27,206 INFO L226 Difference]: Without dead ends: 1855 [2020-10-13 13:16:27,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=572, Invalid=1878, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 13:16:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2020-10-13 13:16:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1587. [2020-10-13 13:16:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-10-13 13:16:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2401 transitions. [2020-10-13 13:16:27,402 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2401 transitions. Word has length 92 [2020-10-13 13:16:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:27,403 INFO L479 AbstractCegarLoop]: Abstraction has 1587 states and 2401 transitions. [2020-10-13 13:16:27,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:16:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2401 transitions. [2020-10-13 13:16:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 13:16:27,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:27,410 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] [2020-10-13 13:16:27,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:16:27,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:27,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1435390859, now seen corresponding path program 1 times [2020-10-13 13:16:27,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:27,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605945104] [2020-10-13 13:16:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 13:16:32,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:16:32,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:16:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:16:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 13:16:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:32,615 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:32,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:32,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:16:32,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:32,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:32,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:32,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:32,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:16:32,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:32,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:16:32,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:32,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:32,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:32,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:32,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:32,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:32,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:32,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:32,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:16:32,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:32,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:32,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:32,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:32,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:16:32,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:16:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:32,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:16:32,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:16:32,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:16:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:16:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:32,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:32,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:16:32,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:32,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:16:32,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:32,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:32,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605945104] [2020-10-13 13:16:32,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:32,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:32,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074659628] [2020-10-13 13:16:32,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:32,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:32,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:32,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:32,988 INFO L87 Difference]: Start difference. First operand 1587 states and 2401 transitions. Second operand 9 states. [2020-10-13 13:16:33,196 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:35,232 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:16:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:35,425 INFO L93 Difference]: Finished difference Result 4432 states and 6687 transitions. [2020-10-13 13:16:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:16:35,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-13 13:16:35,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:35,442 INFO L225 Difference]: With dead ends: 4432 [2020-10-13 13:16:35,442 INFO L226 Difference]: Without dead ends: 2914 [2020-10-13 13:16:35,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:16:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-10-13 13:16:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2452. [2020-10-13 13:16:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2452 states. [2020-10-13 13:16:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3696 transitions. [2020-10-13 13:16:35,637 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3696 transitions. Word has length 93 [2020-10-13 13:16:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:35,639 INFO L479 AbstractCegarLoop]: Abstraction has 2452 states and 3696 transitions. [2020-10-13 13:16:35,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3696 transitions. [2020-10-13 13:16:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 13:16:35,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:35,645 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] [2020-10-13 13:16:35,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:16:35,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:35,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:35,646 INFO L82 PathProgramCache]: Analyzing trace with hash 965337286, now seen corresponding path program 1 times [2020-10-13 13:16:35,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:35,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674954875] [2020-10-13 13:16:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:35,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:37,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:40,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 13:16:40,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:16:40,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:16:40,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:16:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:16:40,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:40,871 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:40,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:40,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:40,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:40,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:40,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:16:40,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:40,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:40,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:40,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:40,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:40,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:40,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 13:16:40,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:40,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:16:40,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:16:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:41,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:41,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:16:41,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:41,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:41,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:41,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:16:41,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:16:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:41,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:41,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:41,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:16:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:41,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:41,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:41,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:41,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:41,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:41,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:16:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:41,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:41,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:16:41,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:41,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:16:41,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:41,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674954875] [2020-10-13 13:16:41,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:41,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:16:41,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081278861] [2020-10-13 13:16:41,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:16:41,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:41,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:16:41,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:16:41,224 INFO L87 Difference]: Start difference. First operand 2452 states and 3696 transitions. Second operand 9 states. [2020-10-13 13:16:41,420 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:41,621 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-13 13:16:41,821 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:16:42,452 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 153 [2020-10-13 13:16:42,944 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-13 13:16:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:45,754 INFO L93 Difference]: Finished difference Result 8454 states and 12918 transitions. [2020-10-13 13:16:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:16:45,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-13 13:16:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:45,794 INFO L225 Difference]: With dead ends: 8454 [2020-10-13 13:16:45,794 INFO L226 Difference]: Without dead ends: 6033 [2020-10-13 13:16:45,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:16:45,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2020-10-13 13:16:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 5395. [2020-10-13 13:16:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5395 states. [2020-10-13 13:16:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 8050 transitions. [2020-10-13 13:16:46,208 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 8050 transitions. Word has length 95 [2020-10-13 13:16:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:46,209 INFO L479 AbstractCegarLoop]: Abstraction has 5395 states and 8050 transitions. [2020-10-13 13:16:46,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:16:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 8050 transitions. [2020-10-13 13:16:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 13:16:46,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:46,217 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] [2020-10-13 13:16:46,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:16:46,217 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1329600144, now seen corresponding path program 1 times [2020-10-13 13:16:46,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:46,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206357317] [2020-10-13 13:16:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:16:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:16:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,409 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:16:51,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:16:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:16:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:51,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:16:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:16:51,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:16:51,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:16:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:16:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:16:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:16:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:51,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:16:51,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:16:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:16:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:16:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:16:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:51,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:51,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:51,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:51,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:51,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:16:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:16:51,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:16:51,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:16:51,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:16:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:51,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:51,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:16:51,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:16:51,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:16:51,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:16:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:16:51,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:16:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:16:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:16:51,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206357317] [2020-10-13 13:16:51,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:16:51,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:16:51,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976540075] [2020-10-13 13:16:51,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:16:51,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:16:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:16:51,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:16:51,620 INFO L87 Difference]: Start difference. First operand 5395 states and 8050 transitions. Second operand 8 states. [2020-10-13 13:16:51,806 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:16:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:16:54,231 INFO L93 Difference]: Finished difference Result 11771 states and 17670 transitions. [2020-10-13 13:16:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:16:54,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-13 13:16:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:16:54,346 INFO L225 Difference]: With dead ends: 11771 [2020-10-13 13:16:54,346 INFO L226 Difference]: Without dead ends: 8133 [2020-10-13 13:16:54,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:16:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8133 states. [2020-10-13 13:16:54,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8133 to 7247. [2020-10-13 13:16:54,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7247 states. [2020-10-13 13:16:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 10728 transitions. [2020-10-13 13:16:54,956 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 10728 transitions. Word has length 95 [2020-10-13 13:16:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:16:54,956 INFO L479 AbstractCegarLoop]: Abstraction has 7247 states and 10728 transitions. [2020-10-13 13:16:54,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:16:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 10728 transitions. [2020-10-13 13:16:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:16:54,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:16:54,959 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] [2020-10-13 13:16:54,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:16:54,960 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:16:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:16:54,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1025327474, now seen corresponding path program 1 times [2020-10-13 13:16:54,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:16:54,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181142134] [2020-10-13 13:16:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:16:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:16:54,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:59,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:16:59,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:16:59,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:16:59,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:16:59,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:16:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:16:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:16:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:16:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:16:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,145 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:00,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:00,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:00,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 13:17:00,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:17:00,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:17:00,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:17:00,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:17:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:17:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:00,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:00,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:17:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:17:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:00,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:00,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:17:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:00,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:00,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:17:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:00,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:00,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:17:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:00,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:00,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:17:00,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:00,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:00,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:00,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:17:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:00,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:00,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181142134] [2020-10-13 13:17:00,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:00,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:17:00,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290963937] [2020-10-13 13:17:00,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:17:00,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:17:00,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:17:00,333 INFO L87 Difference]: Start difference. First operand 7247 states and 10728 transitions. Second operand 7 states. [2020-10-13 13:17:00,534 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:02,049 INFO L93 Difference]: Finished difference Result 15471 states and 22854 transitions. [2020-10-13 13:17:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:17:02,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-13 13:17:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:02,117 INFO L225 Difference]: With dead ends: 15471 [2020-10-13 13:17:02,117 INFO L226 Difference]: Without dead ends: 8258 [2020-10-13 13:17:02,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:17:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8258 states. [2020-10-13 13:17:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8258 to 7249. [2020-10-13 13:17:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7249 states. [2020-10-13 13:17:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10730 transitions. [2020-10-13 13:17:02,723 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10730 transitions. Word has length 96 [2020-10-13 13:17:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:02,723 INFO L479 AbstractCegarLoop]: Abstraction has 7249 states and 10730 transitions. [2020-10-13 13:17:02,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:17:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10730 transitions. [2020-10-13 13:17:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:17:02,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:02,726 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] [2020-10-13 13:17:02,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:17:02,726 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:02,727 INFO L82 PathProgramCache]: Analyzing trace with hash -646237555, now seen corresponding path program 1 times [2020-10-13 13:17:02,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:02,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611523969] [2020-10-13 13:17:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:02,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:02,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:03,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:07,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:07,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:17:07,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:07,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:17:07,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:07,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:17:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:17:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:07,925 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:07,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:07,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:07,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:07,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:07,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:07,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:07,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:17:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:17:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:07,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:07,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:07,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:07,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:07,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:07,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:07,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:08,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:08,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:08,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:08,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:17:08,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:08,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:17:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:08,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:08,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:08,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:08,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:08,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:08,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:08,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:08,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:08,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:08,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:08,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:08,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:17:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:08,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:17:08,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:08,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:17:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:08,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611523969] [2020-10-13 13:17:08,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:08,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:08,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557560974] [2020-10-13 13:17:08,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:08,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:08,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:08,154 INFO L87 Difference]: Start difference. First operand 7249 states and 10730 transitions. Second operand 10 states. [2020-10-13 13:17:08,340 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:08,771 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:09,393 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-13 13:17:10,787 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:10,949 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:17:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:13,724 INFO L93 Difference]: Finished difference Result 24647 states and 36675 transitions. [2020-10-13 13:17:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:17:13,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 97 [2020-10-13 13:17:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:13,792 INFO L225 Difference]: With dead ends: 24647 [2020-10-13 13:17:13,792 INFO L226 Difference]: Without dead ends: 17575 [2020-10-13 13:17:13,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:17:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17575 states. [2020-10-13 13:17:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17575 to 15555. [2020-10-13 13:17:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15555 states. [2020-10-13 13:17:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15555 states to 15555 states and 22974 transitions. [2020-10-13 13:17:14,860 INFO L78 Accepts]: Start accepts. Automaton has 15555 states and 22974 transitions. Word has length 97 [2020-10-13 13:17:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:14,860 INFO L479 AbstractCegarLoop]: Abstraction has 15555 states and 22974 transitions. [2020-10-13 13:17:14,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:17:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 15555 states and 22974 transitions. [2020-10-13 13:17:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:17:14,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:14,863 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] [2020-10-13 13:17:14,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:17:14,863 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:14,863 INFO L82 PathProgramCache]: Analyzing trace with hash 398658753, now seen corresponding path program 1 times [2020-10-13 13:17:14,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:14,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009604596] [2020-10-13 13:17:14,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:14,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:15,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:19,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:19,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:17:19,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:17:19,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:17:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:17:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,079 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:20,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:20,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:17:20,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:20,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:17:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 13:17:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:20,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:20,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:20,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:20,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:20,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:17:20,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:20,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:20,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:17:20,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:17:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 13:17:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:20,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:20,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:17:20,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:20,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:20,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:17:20,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:20,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:20,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009604596] [2020-10-13 13:17:20,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:20,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:17:20,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313439159] [2020-10-13 13:17:20,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:17:20,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:17:20,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:17:20,311 INFO L87 Difference]: Start difference. First operand 15555 states and 22974 transitions. Second operand 8 states. [2020-10-13 13:17:20,503 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:23,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:23,796 INFO L93 Difference]: Finished difference Result 35553 states and 52696 transitions. [2020-10-13 13:17:23,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:17:23,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-13 13:17:23,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:23,929 INFO L225 Difference]: With dead ends: 35553 [2020-10-13 13:17:23,929 INFO L226 Difference]: Without dead ends: 25564 [2020-10-13 13:17:23,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:17:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25564 states. [2020-10-13 13:17:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25564 to 22933. [2020-10-13 13:17:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22933 states. [2020-10-13 13:17:26,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22933 states to 22933 states and 33559 transitions. [2020-10-13 13:17:26,576 INFO L78 Accepts]: Start accepts. Automaton has 22933 states and 33559 transitions. Word has length 97 [2020-10-13 13:17:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:26,576 INFO L479 AbstractCegarLoop]: Abstraction has 22933 states and 33559 transitions. [2020-10-13 13:17:26,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:17:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 22933 states and 33559 transitions. [2020-10-13 13:17:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:17:26,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:26,578 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] [2020-10-13 13:17:26,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:17:26,578 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:26,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1110895247, now seen corresponding path program 1 times [2020-10-13 13:17:26,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:26,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343176340] [2020-10-13 13:17:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:26,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:17:31,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:17:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:17:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:17:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:31,751 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:31,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:31,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:31,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:31,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:31,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:31,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:31,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:17:31,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:17:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:17:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:17:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:17:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:17:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:17:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:31,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:17:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:31,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:31,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:31,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:31,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:31,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:31,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:17:31,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:31,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:17:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:31,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:31,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:31,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:31,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:31,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 13:17:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:31,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:31,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:32,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343176340] [2020-10-13 13:17:32,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:32,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:17:32,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939324558] [2020-10-13 13:17:32,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:17:32,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:32,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:17:32,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:17:32,008 INFO L87 Difference]: Start difference. First operand 22933 states and 33559 transitions. Second operand 8 states. [2020-10-13 13:17:32,224 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:32,397 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-13 13:17:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:34,313 INFO L93 Difference]: Finished difference Result 48475 states and 70939 transitions. [2020-10-13 13:17:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:17:34,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-13 13:17:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:34,406 INFO L225 Difference]: With dead ends: 48475 [2020-10-13 13:17:34,407 INFO L226 Difference]: Without dead ends: 25562 [2020-10-13 13:17:34,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:17:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25562 states. [2020-10-13 13:17:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25562 to 22932. [2020-10-13 13:17:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22932 states. [2020-10-13 13:17:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22932 states to 22932 states and 33555 transitions. [2020-10-13 13:17:36,215 INFO L78 Accepts]: Start accepts. Automaton has 22932 states and 33555 transitions. Word has length 97 [2020-10-13 13:17:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:36,216 INFO L479 AbstractCegarLoop]: Abstraction has 22932 states and 33555 transitions. [2020-10-13 13:17:36,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:17:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 22932 states and 33555 transitions. [2020-10-13 13:17:36,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 13:17:36,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:36,217 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] [2020-10-13 13:17:36,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:17:36,218 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:36,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1988419112, now seen corresponding path program 1 times [2020-10-13 13:17:36,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:36,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271522253] [2020-10-13 13:17:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:36,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:17:41,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:17:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:17:41,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:17:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:17:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,416 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:41,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:41,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:41,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:41,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:17:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:17:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:17:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:17:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:41,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:41,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:17:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:41,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:41,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:17:41,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:41,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:17:41,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:41,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:41,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:17:41,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:17:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:17:41,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 13:17:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:41,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:17:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:41,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:17:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:41,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271522253] [2020-10-13 13:17:41,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:41,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:17:41,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712595045] [2020-10-13 13:17:41,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:17:41,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:41,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:17:41,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:17:41,601 INFO L87 Difference]: Start difference. First operand 22932 states and 33555 transitions. Second operand 8 states. [2020-10-13 13:17:41,785 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:17:45,362 INFO L93 Difference]: Finished difference Result 51369 states and 75525 transitions. [2020-10-13 13:17:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:17:45,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-10-13 13:17:45,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:17:45,503 INFO L225 Difference]: With dead ends: 51369 [2020-10-13 13:17:45,503 INFO L226 Difference]: Without dead ends: 36679 [2020-10-13 13:17:45,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:17:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36679 states. [2020-10-13 13:17:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36679 to 33357. [2020-10-13 13:17:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33357 states. [2020-10-13 13:17:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33357 states to 33357 states and 48473 transitions. [2020-10-13 13:17:47,632 INFO L78 Accepts]: Start accepts. Automaton has 33357 states and 48473 transitions. Word has length 97 [2020-10-13 13:17:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:17:47,632 INFO L479 AbstractCegarLoop]: Abstraction has 33357 states and 48473 transitions. [2020-10-13 13:17:47,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:17:47,633 INFO L276 IsEmpty]: Start isEmpty. Operand 33357 states and 48473 transitions. [2020-10-13 13:17:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:17:47,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:17:47,634 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] [2020-10-13 13:17:47,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:17:47,634 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:17:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:17:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1052246321, now seen corresponding path program 1 times [2020-10-13 13:17:47,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:17:47,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145214282] [2020-10-13 13:17:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:17:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:47,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:52,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:17:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:52,841 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:17:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:17:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:52,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:52,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:17:52,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:17:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:17:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:17:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:52,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:52,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:17:52,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:52,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:17:52,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:17:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:52,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:17:52,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:52,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:17:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:52,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:52,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:52,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:17:52,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:17:52,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:17:52,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:17:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:52,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:52,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:17:52,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:17:52,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:17:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:17:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:52,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:52,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:52,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:17:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:17:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:17:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:17:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:53,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:17:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:53,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:53,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:53,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:53,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:17:53,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:17:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:17:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:53,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:17:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:17:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:17:53,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:17:53,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:17:53,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:17:53,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:17:53,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:17:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:17:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:17:53,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:17:53,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:17:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:17:53,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145214282] [2020-10-13 13:17:53,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:17:53,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:17:53,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317519433] [2020-10-13 13:17:53,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:17:53,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:17:53,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:17:53,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:17:53,073 INFO L87 Difference]: Start difference. First operand 33357 states and 48473 transitions. Second operand 10 states. [2020-10-13 13:17:53,262 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:17:53,697 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:17:55,153 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:17:55,324 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:18:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:18:01,581 INFO L93 Difference]: Finished difference Result 124540 states and 181212 transitions. [2020-10-13 13:18:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:18:01,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-13 13:18:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:18:01,965 INFO L225 Difference]: With dead ends: 124540 [2020-10-13 13:18:01,965 INFO L226 Difference]: Without dead ends: 91405 [2020-10-13 13:18:02,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:18:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91405 states. [2020-10-13 13:18:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91405 to 83071. [2020-10-13 13:18:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83071 states. [2020-10-13 13:18:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83071 states to 83071 states and 119935 transitions. [2020-10-13 13:18:09,022 INFO L78 Accepts]: Start accepts. Automaton has 83071 states and 119935 transitions. Word has length 98 [2020-10-13 13:18:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:09,022 INFO L479 AbstractCegarLoop]: Abstraction has 83071 states and 119935 transitions. [2020-10-13 13:18:09,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:18:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 83071 states and 119935 transitions. [2020-10-13 13:18:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:18:09,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:09,024 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] [2020-10-13 13:18:09,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:18:09,024 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:09,025 INFO L82 PathProgramCache]: Analyzing trace with hash -805301116, now seen corresponding path program 1 times [2020-10-13 13:18:09,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:09,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172864881] [2020-10-13 13:18:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:09,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:18:14,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:18:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:18:14,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:18:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:18:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 13:18:14,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,212 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:18:14,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:18:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:18:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:18:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:18:14,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:18:14,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:18:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:18:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:18:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:18:14,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:18:14,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:14,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:18:14,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:18:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:14,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:18:14,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:14,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:18:14,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:14,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:18:14,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:18:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:14,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:14,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:18:14,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:18:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 13:18:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:18:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:18:14,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:14,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:18:14,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:18:14,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:18:14,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:18:14,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:18:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:14,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:18:14,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:18:14,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:18:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:18:14,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:18:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:18:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:18:14,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:18:14,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:18:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:18:14,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172864881] [2020-10-13 13:18:14,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:18:14,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:18:14,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796756763] [2020-10-13 13:18:14,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:18:14,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:18:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:18:14,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:18:14,438 INFO L87 Difference]: Start difference. First operand 83071 states and 119935 transitions. Second operand 10 states. [2020-10-13 13:18:14,631 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:18:15,075 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-13 13:18:17,661 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-13 13:18:17,842 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-13 13:18:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:18:32,978 INFO L93 Difference]: Finished difference Result 373934 states and 541676 transitions. [2020-10-13 13:18:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:18:32,979 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-13 13:18:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:18:33,959 INFO L225 Difference]: With dead ends: 373934 [2020-10-13 13:18:33,959 INFO L226 Difference]: Without dead ends: 291085 [2020-10-13 13:18:34,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:18:34,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291085 states. [2020-10-13 13:18:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291085 to 265809. [2020-10-13 13:18:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265809 states. [2020-10-13 13:18:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265809 states to 265809 states and 383205 transitions. [2020-10-13 13:18:56,030 INFO L78 Accepts]: Start accepts. Automaton has 265809 states and 383205 transitions. Word has length 99 [2020-10-13 13:18:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:18:56,030 INFO L479 AbstractCegarLoop]: Abstraction has 265809 states and 383205 transitions. [2020-10-13 13:18:56,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:18:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 265809 states and 383205 transitions. [2020-10-13 13:18:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:18:56,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:18:56,032 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] [2020-10-13 13:18:56,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:18:56,032 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:18:56,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:18:56,033 INFO L82 PathProgramCache]: Analyzing trace with hash 420147644, now seen corresponding path program 1 times [2020-10-13 13:18:56,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:18:56,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777034527] [2020-10-13 13:18:56,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:18:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:18:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:18:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:19:01,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:19:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:19:01,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:19:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:19:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:19:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,216 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-13 13:19:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:19:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:19:01,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:19:01,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:19:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:19:01,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:19:01,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:19:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 13:19:01,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:01,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:19:01,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:19:01,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:19:01,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:19:01,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:19:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:19:01,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:19:01,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:19:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:19:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:19:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:19:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:19:01,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:19:01,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:19:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:19:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:19:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:19:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:19:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:19:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:19:01,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:19:01,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:19:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:19:01,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:19:01,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:19:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:19:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:19:01,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:19:01,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:19:01,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:19:01,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:19:01,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:19:01,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:19:01,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:19:01,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:19:01,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:19:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:19:01,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777034527] [2020-10-13 13:19:01,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:19:01,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:19:01,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078636783] [2020-10-13 13:19:01,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:19:01,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:19:01,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:19:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:19:01,465 INFO L87 Difference]: Start difference. First operand 265809 states and 383205 transitions. Second operand 9 states. [2020-10-13 13:19:01,639 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-13 13:19:01,827 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:19:02,032 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:19:02,556 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 153 [2020-10-13 13:19:03,165 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 151