/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/eca-rers2012/Problem17_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:35:48,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:35:48,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:35:48,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:35:48,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:35:48,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:35:48,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:35:48,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:35:48,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:35:48,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:35:48,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:35:48,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:35:48,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:35:48,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:35:48,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:35:48,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:35:48,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:35:48,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:35:48,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:35:48,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:35:48,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:35:48,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:35:48,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:35:48,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:35:48,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:35:48,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:35:48,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:35:48,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:35:48,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:35:48,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:35:48,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:35:48,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:35:48,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:35:48,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:35:48,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:35:48,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:35:48,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:35:48,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:35:48,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:35:48,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:35:48,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:35:48,190 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 09:35:48,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:35:48,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:35:48,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:35:48,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:35:48,213 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:35:48,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:35:48,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:35:48,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:35:48,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:35:48,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:35:48,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:35:48,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:35:48,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:35:48,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:35:48,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:35:48,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:35:48,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:35:48,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:35:48,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:35:48,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:35:48,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:35:48,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:35:48,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:35:48,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:35:48,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:35:48,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:35:48,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:35:48,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:35:48,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:35:48,218 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 09:35:48,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:35:48,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:35:48,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:35:48,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:35:48,508 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:35:48,509 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label38.c [2020-10-13 09:35:48,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc0bad94/b1155e193c4f45bdbe642d3037176e11/FLAGe33d83ac9 [2020-10-13 09:35:49,261 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:35:49,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label38.c [2020-10-13 09:35:49,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc0bad94/b1155e193c4f45bdbe642d3037176e11/FLAGe33d83ac9 [2020-10-13 09:35:49,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1bc0bad94/b1155e193c4f45bdbe642d3037176e11 [2020-10-13 09:35:49,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:35:49,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:35:49,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:35:49,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:35:49,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:35:49,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:49" (1/1) ... [2020-10-13 09:35:49,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643fb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:49, skipping insertion in model container [2020-10-13 09:35:49,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:35:49" (1/1) ... [2020-10-13 09:35:49,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:35:49,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:35:50,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:35:50,763 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:35:51,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:35:51,223 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:35:51,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51 WrapperNode [2020-10-13 09:35:51,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:35:51,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:35:51,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:35:51,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:35:51,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (1/1) ... [2020-10-13 09:35:51,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (1/1) ... [2020-10-13 09:35:51,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (1/1) ... [2020-10-13 09:35:51,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (1/1) ... [2020-10-13 09:35:51,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (1/1) ... [2020-10-13 09:35:51,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (1/1) ... [2020-10-13 09:35:51,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (1/1) ... [2020-10-13 09:35:51,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:35:51,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:35:51,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:35:51,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:35:51,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (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 09:35:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:35:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:35:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:35:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:35:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:35:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:35:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:35:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:35:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:35:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:35:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:35:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:35:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:35:57,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:35:57,970 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:35:57,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:57 BoogieIcfgContainer [2020-10-13 09:35:57,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:35:57,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:35:57,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:35:57,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:35:57,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:35:49" (1/3) ... [2020-10-13 09:35:57,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:57, skipping insertion in model container [2020-10-13 09:35:57,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:35:51" (2/3) ... [2020-10-13 09:35:57,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:35:57, skipping insertion in model container [2020-10-13 09:35:57,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:35:57" (3/3) ... [2020-10-13 09:35:58,001 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label38.c [2020-10-13 09:35:58,011 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:35:58,023 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:35:58,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:35:58,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:35:58,066 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:35:58,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:35:58,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:35:58,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:35:58,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:35:58,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:35:58,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:35:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:35:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 09:35:58,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:58,106 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] [2020-10-13 09:35:58,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:58,113 INFO L82 PathProgramCache]: Analyzing trace with hash 653622185, now seen corresponding path program 1 times [2020-10-13 09:35:58,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:58,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217743327] [2020-10-13 09:35:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:58,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:58,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 09:35:58,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:58,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-13 09:35:58,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:58,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:35:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:35:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:35:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:35:58,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:58,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:58,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:58,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:58,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:35:58,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:59,007 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 09:35:59,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217743327] [2020-10-13 09:35:59,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:35:59,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:35:59,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983470440] [2020-10-13 09:35:59,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:35:59,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:59,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:35:59,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:35:59,040 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:36:08,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:08,853 INFO L93 Difference]: Finished difference Result 1716 states and 3126 transitions. [2020-10-13 09:36:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:08,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-13 09:36:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:08,894 INFO L225 Difference]: With dead ends: 1716 [2020-10-13 09:36:08,894 INFO L226 Difference]: Without dead ends: 1034 [2020-10-13 09:36:08,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:08,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-10-13 09:36:09,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1008. [2020-10-13 09:36:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-13 09:36:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1705 transitions. [2020-10-13 09:36:09,090 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1705 transitions. Word has length 58 [2020-10-13 09:36:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:09,092 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1705 transitions. [2020-10-13 09:36:09,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:36:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1705 transitions. [2020-10-13 09:36:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 09:36:09,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:09,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:09,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:36:09,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:09,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1166644296, now seen corresponding path program 1 times [2020-10-13 09:36:09,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:09,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077834950] [2020-10-13 09:36:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:10,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:10,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:10,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 09:36:10,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:36:10,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1453 [2020-10-13 09:36:10,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:36:10,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:36:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:10,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:10,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:10,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:36:10,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:10,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:10,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:10,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:10,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:10,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:36:10,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:36:10,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:10,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:36:10,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:10,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077834950] [2020-10-13 09:36:10,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:10,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:10,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323410836] [2020-10-13 09:36:10,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:10,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:10,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:10,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:10,890 INFO L87 Difference]: Start difference. First operand 1008 states and 1705 transitions. Second operand 5 states. [2020-10-13 09:36:22,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:22,335 INFO L93 Difference]: Finished difference Result 2916 states and 4999 transitions. [2020-10-13 09:36:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:22,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-13 09:36:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:22,348 INFO L225 Difference]: With dead ends: 2916 [2020-10-13 09:36:22,348 INFO L226 Difference]: Without dead ends: 1914 [2020-10-13 09:36:22,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:22,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-13 09:36:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1899. [2020-10-13 09:36:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-13 09:36:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2834 transitions. [2020-10-13 09:36:22,409 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2834 transitions. Word has length 127 [2020-10-13 09:36:22,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:22,412 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2834 transitions. [2020-10-13 09:36:22,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:22,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2834 transitions. [2020-10-13 09:36:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 09:36:22,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:22,421 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:22,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:36:22,422 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:22,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:22,422 INFO L82 PathProgramCache]: Analyzing trace with hash 348615724, now seen corresponding path program 1 times [2020-10-13 09:36:22,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:22,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695192784] [2020-10-13 09:36:22,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:24,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:24,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 09:36:24,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:36:24,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2001 [2020-10-13 09:36:24,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 09:36:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:36:24,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:36:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:24,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:24,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:24,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:36:24,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:36:24,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:36:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:24,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695192784] [2020-10-13 09:36:24,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:24,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:24,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043372444] [2020-10-13 09:36:24,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:24,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:24,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:24,941 INFO L87 Difference]: Start difference. First operand 1899 states and 2834 transitions. Second operand 5 states. [2020-10-13 09:36:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:35,788 INFO L93 Difference]: Finished difference Result 3821 states and 5719 transitions. [2020-10-13 09:36:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:35,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-13 09:36:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:35,800 INFO L225 Difference]: With dead ends: 3821 [2020-10-13 09:36:35,800 INFO L226 Difference]: Without dead ends: 1912 [2020-10-13 09:36:35,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-10-13 09:36:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1899. [2020-10-13 09:36:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-13 09:36:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2830 transitions. [2020-10-13 09:36:35,851 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2830 transitions. Word has length 133 [2020-10-13 09:36:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:35,852 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2830 transitions. [2020-10-13 09:36:35,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2830 transitions. [2020-10-13 09:36:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 09:36:35,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:35,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:35,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:36:35,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:35,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:35,855 INFO L82 PathProgramCache]: Analyzing trace with hash 543031076, now seen corresponding path program 1 times [2020-10-13 09:36:35,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:35,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004029568] [2020-10-13 09:36:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:37,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:37,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 09:36:37,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:36:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-13 09:36:37,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:36:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:36:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:37,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:37,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:37,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:36:37,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:37,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:36:37,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:36:37,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:36:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:37,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004029568] [2020-10-13 09:36:37,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:37,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:37,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937383083] [2020-10-13 09:36:37,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:37,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:37,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:37,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:37,538 INFO L87 Difference]: Start difference. First operand 1899 states and 2830 transitions. Second operand 5 states. [2020-10-13 09:36:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:46,825 INFO L93 Difference]: Finished difference Result 3852 states and 5742 transitions. [2020-10-13 09:36:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:46,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 09:36:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:46,840 INFO L225 Difference]: With dead ends: 3852 [2020-10-13 09:36:46,840 INFO L226 Difference]: Without dead ends: 1912 [2020-10-13 09:36:46,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:46,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-10-13 09:36:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1899. [2020-10-13 09:36:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-13 09:36:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2826 transitions. [2020-10-13 09:36:46,911 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2826 transitions. Word has length 137 [2020-10-13 09:36:46,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:46,912 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2826 transitions. [2020-10-13 09:36:46,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2826 transitions. [2020-10-13 09:36:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 09:36:46,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:46,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:46,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:36:46,915 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:46,915 INFO L82 PathProgramCache]: Analyzing trace with hash -394105303, now seen corresponding path program 1 times [2020-10-13 09:36:46,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:46,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631177404] [2020-10-13 09:36:46,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:46,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:47,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:47,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 09:36:47,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:36:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-13 09:36:47,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 09:36:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:36:47,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:47,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:47,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:47,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:47,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:47,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:36:47,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:47,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:47,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:48,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:48,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:48,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:36:48,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:48,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 09:36:48,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:48,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:36:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:36:48,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631177404] [2020-10-13 09:36:48,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:48,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:48,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270142528] [2020-10-13 09:36:48,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:48,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:48,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:48,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:48,134 INFO L87 Difference]: Start difference. First operand 1899 states and 2826 transitions. Second operand 5 states. [2020-10-13 09:37:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:00,345 INFO L93 Difference]: Finished difference Result 5566 states and 8426 transitions. [2020-10-13 09:37:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:00,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-13 09:37:00,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:00,366 INFO L225 Difference]: With dead ends: 5566 [2020-10-13 09:37:00,366 INFO L226 Difference]: Without dead ends: 3673 [2020-10-13 09:37:00,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2020-10-13 09:37:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3660. [2020-10-13 09:37:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3660 states. [2020-10-13 09:37:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5139 transitions. [2020-10-13 09:37:00,461 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5139 transitions. Word has length 140 [2020-10-13 09:37:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:00,462 INFO L479 AbstractCegarLoop]: Abstraction has 3660 states and 5139 transitions. [2020-10-13 09:37:00,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:00,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5139 transitions. [2020-10-13 09:37:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 09:37:00,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:00,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:00,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:37:00,465 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:00,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:00,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1360243645, now seen corresponding path program 1 times [2020-10-13 09:37:00,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:00,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709923820] [2020-10-13 09:37:00,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:00,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:02,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:02,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:37:02,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:37:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-10-13 09:37:02,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:37:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:37:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:02,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:37:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:02,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:02,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:02,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:37:02,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:02,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:37:02,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:37:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:02,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709923820] [2020-10-13 09:37:02,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:02,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:02,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105258022] [2020-10-13 09:37:02,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:02,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:02,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:02,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:02,319 INFO L87 Difference]: Start difference. First operand 3660 states and 5139 transitions. Second operand 5 states. [2020-10-13 09:37:12,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:12,122 INFO L93 Difference]: Finished difference Result 7351 states and 10356 transitions. [2020-10-13 09:37:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:12,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-13 09:37:12,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:12,140 INFO L225 Difference]: With dead ends: 7351 [2020-10-13 09:37:12,140 INFO L226 Difference]: Without dead ends: 3673 [2020-10-13 09:37:12,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:12,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2020-10-13 09:37:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3660. [2020-10-13 09:37:12,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3660 states. [2020-10-13 09:37:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5135 transitions. [2020-10-13 09:37:12,233 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5135 transitions. Word has length 146 [2020-10-13 09:37:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:12,233 INFO L479 AbstractCegarLoop]: Abstraction has 3660 states and 5135 transitions. [2020-10-13 09:37:12,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5135 transitions. [2020-10-13 09:37:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 09:37:12,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:12,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:12,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:37:12,237 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:12,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:12,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1407203943, now seen corresponding path program 1 times [2020-10-13 09:37:12,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:12,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530283905] [2020-10-13 09:37:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:12,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:13,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 09:37:13,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:37:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-13 09:37:13,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 09:37:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:37:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:13,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:13,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:37:13,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:13,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:13,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:13,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:13,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:37:13,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:37:13,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:37:13,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:13,584 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:13,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530283905] [2020-10-13 09:37:13,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:13,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:13,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198622167] [2020-10-13 09:37:13,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:13,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:13,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:13,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:13,587 INFO L87 Difference]: Start difference. First operand 3660 states and 5135 transitions. Second operand 5 states. [2020-10-13 09:37:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:26,651 INFO L93 Difference]: Finished difference Result 9079 states and 13113 transitions. [2020-10-13 09:37:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:26,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-13 09:37:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:26,679 INFO L225 Difference]: With dead ends: 9079 [2020-10-13 09:37:26,680 INFO L226 Difference]: Without dead ends: 5425 [2020-10-13 09:37:26,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5425 states. [2020-10-13 09:37:26,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5425 to 5415. [2020-10-13 09:37:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5415 states. [2020-10-13 09:37:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 7411 transitions. [2020-10-13 09:37:26,839 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 7411 transitions. Word has length 148 [2020-10-13 09:37:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:26,840 INFO L479 AbstractCegarLoop]: Abstraction has 5415 states and 7411 transitions. [2020-10-13 09:37:26,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 7411 transitions. [2020-10-13 09:37:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 09:37:26,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:26,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:26,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:37:26,844 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:26,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1428179083, now seen corresponding path program 1 times [2020-10-13 09:37:26,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:26,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048361154] [2020-10-13 09:37:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:26,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:27,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:27,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:37:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:37:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-13 09:37:27,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 09:37:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:37:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:37:27,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:27,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 09:37:27,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 09:37:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:27,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 09:37:27,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:27,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048361154] [2020-10-13 09:37:27,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:27,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:27,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641617586] [2020-10-13 09:37:27,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:27,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:27,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:27,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:27,857 INFO L87 Difference]: Start difference. First operand 5415 states and 7411 transitions. Second operand 5 states. [2020-10-13 09:37:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:45,909 INFO L93 Difference]: Finished difference Result 13500 states and 18838 transitions. [2020-10-13 09:37:45,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:45,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-13 09:37:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:45,950 INFO L225 Difference]: With dead ends: 13500 [2020-10-13 09:37:45,951 INFO L226 Difference]: Without dead ends: 8091 [2020-10-13 09:37:45,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2020-10-13 09:37:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 8061. [2020-10-13 09:37:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8061 states. [2020-10-13 09:37:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8061 states to 8061 states and 11250 transitions. [2020-10-13 09:37:46,190 INFO L78 Accepts]: Start accepts. Automaton has 8061 states and 11250 transitions. Word has length 150 [2020-10-13 09:37:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:46,191 INFO L479 AbstractCegarLoop]: Abstraction has 8061 states and 11250 transitions. [2020-10-13 09:37:46,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 8061 states and 11250 transitions. [2020-10-13 09:37:46,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 09:37:46,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:46,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:46,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:37:46,197 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:46,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1642844896, now seen corresponding path program 1 times [2020-10-13 09:37:46,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:46,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294632374] [2020-10-13 09:37:46,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:47,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:47,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 09:37:47,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:37:47,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-13 09:37:47,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:37:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 09:37:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:47,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:47,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:47,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:47,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:47,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:47,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:37:47,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:47,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 09:37:47,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:47,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:37:47,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:47,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294632374] [2020-10-13 09:37:47,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:47,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:47,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224867557] [2020-10-13 09:37:47,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:47,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:47,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:47,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:47,454 INFO L87 Difference]: Start difference. First operand 8061 states and 11250 transitions. Second operand 5 states. [2020-10-13 09:38:02,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:38:02,329 INFO L93 Difference]: Finished difference Result 20088 states and 29271 transitions. [2020-10-13 09:38:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:38:02,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 09:38:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:38:02,391 INFO L225 Difference]: With dead ends: 20088 [2020-10-13 09:38:02,391 INFO L226 Difference]: Without dead ends: 12033 [2020-10-13 09:38:02,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:38:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12033 states. [2020-10-13 09:38:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12033 to 12023. [2020-10-13 09:38:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12023 states. [2020-10-13 09:38:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12023 states to 12023 states and 16725 transitions. [2020-10-13 09:38:02,712 INFO L78 Accepts]: Start accepts. Automaton has 12023 states and 16725 transitions. Word has length 155 [2020-10-13 09:38:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:38:02,713 INFO L479 AbstractCegarLoop]: Abstraction has 12023 states and 16725 transitions. [2020-10-13 09:38:02,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:38:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 12023 states and 16725 transitions. [2020-10-13 09:38:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 09:38:02,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:02,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:38:02,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:38:02,719 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:02,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:02,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1210980008, now seen corresponding path program 1 times [2020-10-13 09:38:02,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:02,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822127589] [2020-10-13 09:38:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:03,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:03,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 09:38:03,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:38:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-13 09:38:03,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:03,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 09:38:03,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:03,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:03,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:38:03,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:38:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:03,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:38:03,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:38:03,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:38:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:38:03,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822127589] [2020-10-13 09:38:03,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:38:03,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:38:03,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297575958] [2020-10-13 09:38:03,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:38:03,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:03,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:38:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:38:03,707 INFO L87 Difference]: Start difference. First operand 12023 states and 16725 transitions. Second operand 5 states. [2020-10-13 09:38:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:38:25,036 INFO L93 Difference]: Finished difference Result 31916 states and 46079 transitions. [2020-10-13 09:38:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:38:25,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-13 09:38:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:38:25,136 INFO L225 Difference]: With dead ends: 31916 [2020-10-13 09:38:25,136 INFO L226 Difference]: Without dead ends: 19899 [2020-10-13 09:38:25,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:38:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19899 states. [2020-10-13 09:38:25,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19899 to 19890. [2020-10-13 09:38:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19890 states. [2020-10-13 09:38:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19890 states to 19890 states and 26673 transitions. [2020-10-13 09:38:25,582 INFO L78 Accepts]: Start accepts. Automaton has 19890 states and 26673 transitions. Word has length 178 [2020-10-13 09:38:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:38:25,582 INFO L479 AbstractCegarLoop]: Abstraction has 19890 states and 26673 transitions. [2020-10-13 09:38:25,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:38:25,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19890 states and 26673 transitions. [2020-10-13 09:38:25,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-13 09:38:25,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:25,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:38:25,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:38:25,595 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:25,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:25,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1524302076, now seen corresponding path program 1 times [2020-10-13 09:38:25,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:25,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041122550] [2020-10-13 09:38:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:26,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:27,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:27,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-13 09:38:27,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:38:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2077 [2020-10-13 09:38:27,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:38:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:38:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 09:38:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:27,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:27,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:27,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:27,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:27,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:38:27,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:27,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:38:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:27,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:28,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 09:38:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 09:38:28,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:38:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 09:38:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:38:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:38:28,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041122550] [2020-10-13 09:38:28,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:38:28,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:38:28,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737524468] [2020-10-13 09:38:28,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:38:28,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:28,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:38:28,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:38:28,344 INFO L87 Difference]: Start difference. First operand 19890 states and 26673 transitions. Second operand 6 states. [2020-10-13 09:38:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:38:51,395 INFO L93 Difference]: Finished difference Result 68216 states and 95925 transitions. [2020-10-13 09:38:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:38:51,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-13 09:38:51,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:38:51,622 INFO L225 Difference]: With dead ends: 68216 [2020-10-13 09:38:51,622 INFO L226 Difference]: Without dead ends: 48332 [2020-10-13 09:38:51,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:38:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48332 states. [2020-10-13 09:38:53,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48332 to 48322. [2020-10-13 09:38:53,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48322 states. [2020-10-13 09:38:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48322 states to 48322 states and 61954 transitions. [2020-10-13 09:38:53,603 INFO L78 Accepts]: Start accepts. Automaton has 48322 states and 61954 transitions. Word has length 210 [2020-10-13 09:38:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:38:53,603 INFO L479 AbstractCegarLoop]: Abstraction has 48322 states and 61954 transitions. [2020-10-13 09:38:53,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:38:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 48322 states and 61954 transitions. [2020-10-13 09:38:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-13 09:38:53,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:53,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:38:53,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:38:53,638 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:53,639 INFO L82 PathProgramCache]: Analyzing trace with hash 991218046, now seen corresponding path program 1 times [2020-10-13 09:38:53,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:53,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632606661] [2020-10-13 09:38:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:53,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:53,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:57,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 09:38:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:38:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4051 [2020-10-13 09:38:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:38:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-10-13 09:38:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:38:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:57,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:57,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:38:57,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:57,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:38:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:58,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:58,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-13 09:38:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 09:38:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 09:38:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-13 09:38:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:38:58,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632606661] [2020-10-13 09:38:58,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:38:58,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:38:58,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625902823] [2020-10-13 09:38:58,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:38:58,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:58,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:38:58,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:38:58,384 INFO L87 Difference]: Start difference. First operand 48322 states and 61954 transitions. Second operand 6 states. [2020-10-13 09:39:29,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:29,151 INFO L93 Difference]: Finished difference Result 117186 states and 152414 transitions. [2020-10-13 09:39:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:39:29,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2020-10-13 09:39:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:29,422 INFO L225 Difference]: With dead ends: 117186 [2020-10-13 09:39:29,422 INFO L226 Difference]: Without dead ends: 68857 [2020-10-13 09:39:29,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:39:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68857 states. [2020-10-13 09:39:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68857 to 67972. [2020-10-13 09:39:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67972 states. [2020-10-13 09:39:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67972 states to 67972 states and 86275 transitions. [2020-10-13 09:39:30,693 INFO L78 Accepts]: Start accepts. Automaton has 67972 states and 86275 transitions. Word has length 306 [2020-10-13 09:39:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:39:30,694 INFO L479 AbstractCegarLoop]: Abstraction has 67972 states and 86275 transitions. [2020-10-13 09:39:30,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:39:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 67972 states and 86275 transitions. [2020-10-13 09:39:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-13 09:39:30,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:39:30,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:30,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:39:30,727 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:39:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:39:30,728 INFO L82 PathProgramCache]: Analyzing trace with hash 131142367, now seen corresponding path program 1 times [2020-10-13 09:39:30,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:39:30,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578263649] [2020-10-13 09:39:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:39:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:34,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:34,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-13 09:39:34,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:39:34,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3772 [2020-10-13 09:39:34,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:39:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-13 09:39:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:39:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:39:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:34,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:34,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:34,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:39:34,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:39:34,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:39:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:39:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:39:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:39:34,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:39:34,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:39:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:39:34,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:39:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 09:39:34,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:39:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:39:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:39:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-13 09:39:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:39:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:39:35,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578263649] [2020-10-13 09:39:35,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:39:35,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:39:35,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914963992] [2020-10-13 09:39:35,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:39:35,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:39:35,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:39:35,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:39:35,160 INFO L87 Difference]: Start difference. First operand 67972 states and 86275 transitions. Second operand 5 states. [2020-10-13 09:39:41,696 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-13 09:39:48,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:39:48,647 INFO L93 Difference]: Finished difference Result 135527 states and 171993 transitions. [2020-10-13 09:39:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:39:48,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2020-10-13 09:39:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:39:48,893 INFO L225 Difference]: With dead ends: 135527 [2020-10-13 09:39:48,893 INFO L226 Difference]: Without dead ends: 67541