/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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:40:36,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:40:36,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:40:36,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:40:36,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:40:36,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:40:36,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:40:36,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:40:36,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:40:36,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:40:36,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:40:36,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:40:36,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:40:36,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:40:36,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:40:36,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:40:36,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:40:36,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:40:36,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:40:36,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:40:36,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:40:36,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:40:36,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:40:36,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:40:36,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:40:36,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:40:36,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:40:36,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:40:36,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:40:36,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:40:36,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:40:36,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:40:36,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:40:36,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:40:36,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:40:36,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:40:36,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:40:36,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:40:36,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:40:36,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:40:36,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:40:36,163 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 09:40:36,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:40:36,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:40:36,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:40:36,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:40:36,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:40:36,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:40:36,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:40:36,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:40:36,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:40:36,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:40:36,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:40:36,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:40:36,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:40:36,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:40:36,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:40:36,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:40:36,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:40:36,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:40:36,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:40:36,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:40:36,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:40:36,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:40:36,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:40:36,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:40:36,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:40:36,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:40:36,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:40:36,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:40:36,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:40:36,226 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 09:40:36,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:40:36,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:40:36,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:40:36,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:40:36,551 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:40:36,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-13 09:40:36,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13dd511d6/83074011ed554a73a666ec70a9db312a/FLAG3f2b07b3d [2020-10-13 09:40:37,444 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:40:37,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label55.c [2020-10-13 09:40:37,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13dd511d6/83074011ed554a73a666ec70a9db312a/FLAG3f2b07b3d [2020-10-13 09:40:37,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13dd511d6/83074011ed554a73a666ec70a9db312a [2020-10-13 09:40:37,966 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:40:37,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:40:37,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:40:37,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:40:37,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:40:37,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:37" (1/1) ... [2020-10-13 09:40:37,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:37, skipping insertion in model container [2020-10-13 09:40:37,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:40:37" (1/1) ... [2020-10-13 09:40:37,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:40:38,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:40:39,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:40:39,379 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:40:39,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:40:39,878 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:40:39,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39 WrapperNode [2020-10-13 09:40:39,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:40:39,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:40:39,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:40:39,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:40:39,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (1/1) ... [2020-10-13 09:40:39,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (1/1) ... [2020-10-13 09:40:39,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (1/1) ... [2020-10-13 09:40:39,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (1/1) ... [2020-10-13 09:40:40,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (1/1) ... [2020-10-13 09:40:40,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (1/1) ... [2020-10-13 09:40:40,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (1/1) ... [2020-10-13 09:40:40,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:40:40,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:40:40,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:40:40,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:40:40,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (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 09:40:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:40:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:40:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:40:40,311 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:40:40,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:40:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:40:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:40:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:40:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:40:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:40:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:40:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:40:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:40:47,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:40:47,125 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:40:47,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:47 BoogieIcfgContainer [2020-10-13 09:40:47,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:40:47,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:40:47,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:40:47,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:40:47,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:40:37" (1/3) ... [2020-10-13 09:40:47,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f0a049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:47, skipping insertion in model container [2020-10-13 09:40:47,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:40:39" (2/3) ... [2020-10-13 09:40:47,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f0a049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:40:47, skipping insertion in model container [2020-10-13 09:40:47,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:40:47" (3/3) ... [2020-10-13 09:40:47,147 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label55.c [2020-10-13 09:40:47,161 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:40:47,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:40:47,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:40:47,225 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:40:47,226 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:40:47,226 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:40:47,226 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:40:47,226 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:40:47,226 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:40:47,227 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:40:47,227 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:40:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:40:47,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 09:40:47,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:47,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:40:47,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:47,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:47,280 INFO L82 PathProgramCache]: Analyzing trace with hash 737483217, now seen corresponding path program 1 times [2020-10-13 09:40:47,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:47,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377865420] [2020-10-13 09:40:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:47,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 09:40:47,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-13 09:40:47,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:47,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:40:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:40:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:40:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:40:47,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:40:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:47,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:40:47,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:40:47,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:40:47,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:40:47,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:40:47,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:40:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:40:47,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:40:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:40:47,965 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 09:40:47,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377865420] [2020-10-13 09:40:47,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:40:47,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:40:47,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209725362] [2020-10-13 09:40:47,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:40:47,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:40:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:40:47,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:40:48,001 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:40:58,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:40:58,899 INFO L93 Difference]: Finished difference Result 1691 states and 3090 transitions. [2020-10-13 09:40:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:40:58,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 09:40:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:40:58,937 INFO L225 Difference]: With dead ends: 1691 [2020-10-13 09:40:58,937 INFO L226 Difference]: Without dead ends: 1011 [2020-10-13 09:40:58,948 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 09:40:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-13 09:40:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1000. [2020-10-13 09:40:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-13 09:40:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1539 transitions. [2020-10-13 09:40:59,084 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1539 transitions. Word has length 17 [2020-10-13 09:40:59,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:40:59,085 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1539 transitions. [2020-10-13 09:40:59,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:40:59,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1539 transitions. [2020-10-13 09:40:59,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 09:40:59,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:40:59,090 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:40:59,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:40:59,091 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:40:59,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:40:59,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1507327641, now seen corresponding path program 1 times [2020-10-13 09:40:59,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:40:59,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713336948] [2020-10-13 09:40:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:40:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:40:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:40:59,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:00,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:00,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:41:00,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-13 09:41:00,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:00,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:41:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:41:00,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:41:00,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:00,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:00,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:00,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:00,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:00,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:41:00,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:00,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:00,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:00,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:00,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:00,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:00,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:41:00,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 09:41:00,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:00,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:41:00,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:00,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713336948] [2020-10-13 09:41:00,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:00,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:00,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480859853] [2020-10-13 09:41:00,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:00,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:00,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:00,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:00,520 INFO L87 Difference]: Start difference. First operand 1000 states and 1539 transitions. Second operand 5 states. [2020-10-13 09:41:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:13,279 INFO L93 Difference]: Finished difference Result 2880 states and 4471 transitions. [2020-10-13 09:41:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:13,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-13 09:41:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:13,291 INFO L225 Difference]: With dead ends: 2880 [2020-10-13 09:41:13,291 INFO L226 Difference]: Without dead ends: 1886 [2020-10-13 09:41:13,296 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 09:41:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2020-10-13 09:41:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1882. [2020-10-13 09:41:13,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-10-13 09:41:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2582 transitions. [2020-10-13 09:41:13,363 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2582 transitions. Word has length 88 [2020-10-13 09:41:13,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:13,364 INFO L479 AbstractCegarLoop]: Abstraction has 1882 states and 2582 transitions. [2020-10-13 09:41:13,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2582 transitions. [2020-10-13 09:41:13,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-13 09:41:13,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:13,368 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:41:13,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:41:13,368 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:13,369 INFO L82 PathProgramCache]: Analyzing trace with hash -890287815, now seen corresponding path program 1 times [2020-10-13 09:41:13,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:13,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357627560] [2020-10-13 09:41:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:13,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:13,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 09:41:13,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:13,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 09:41:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 09:41:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:41:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:13,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:13,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:13,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:41:13,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:13,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:13,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:13,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:13,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:41:13,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:41:13,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 09:41:13,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:13,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357627560] [2020-10-13 09:41:13,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:13,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:13,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001795473] [2020-10-13 09:41:13,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:13,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:13,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:13,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:13,933 INFO L87 Difference]: Start difference. First operand 1882 states and 2582 transitions. Second operand 5 states. [2020-10-13 09:41:34,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:34,019 INFO L93 Difference]: Finished difference Result 4655 states and 6578 transitions. [2020-10-13 09:41:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:34,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-13 09:41:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:34,043 INFO L225 Difference]: With dead ends: 4655 [2020-10-13 09:41:34,043 INFO L226 Difference]: Without dead ends: 2779 [2020-10-13 09:41:34,050 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 09:41:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2020-10-13 09:41:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2773. [2020-10-13 09:41:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2773 states. [2020-10-13 09:41:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 3660 transitions. [2020-10-13 09:41:34,152 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 3660 transitions. Word has length 91 [2020-10-13 09:41:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:34,153 INFO L479 AbstractCegarLoop]: Abstraction has 2773 states and 3660 transitions. [2020-10-13 09:41:34,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 3660 transitions. [2020-10-13 09:41:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 09:41:34,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:34,166 INFO L422 BasicCegarLoop]: trace histogram [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 09:41:34,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:41:34,167 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:34,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1503499145, now seen corresponding path program 1 times [2020-10-13 09:41:34,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:34,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874469290] [2020-10-13 09:41:34,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:35,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:35,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:41:35,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:41:35,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-10-13 09:41:35,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:41:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:41:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:35,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:35,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:35,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:35,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:35,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:35,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:41:35,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:35,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:41:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:41:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:41:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:35,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:35,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:41:35,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:35,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 09:41:35,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:35,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:35,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:35,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:41:35,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:41:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:35,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874469290] [2020-10-13 09:41:35,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:41:35,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:41:35,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685387464] [2020-10-13 09:41:35,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:41:35,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:35,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:41:35,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:41:35,825 INFO L87 Difference]: Start difference. First operand 2773 states and 3660 transitions. Second operand 5 states. [2020-10-13 09:41:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:41:52,979 INFO L93 Difference]: Finished difference Result 8196 states and 10945 transitions. [2020-10-13 09:41:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:41:52,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 09:41:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:41:53,014 INFO L225 Difference]: With dead ends: 8196 [2020-10-13 09:41:53,014 INFO L226 Difference]: Without dead ends: 5429 [2020-10-13 09:41:53,022 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 09:41:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2020-10-13 09:41:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 5405. [2020-10-13 09:41:53,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-10-13 09:41:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 6817 transitions. [2020-10-13 09:41:53,193 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 6817 transitions. Word has length 96 [2020-10-13 09:41:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:41:53,193 INFO L479 AbstractCegarLoop]: Abstraction has 5405 states and 6817 transitions. [2020-10-13 09:41:53,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:41:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 6817 transitions. [2020-10-13 09:41:53,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 09:41:53,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:41:53,198 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:41:53,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:41:53,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:41:53,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:41:53,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1148552955, now seen corresponding path program 1 times [2020-10-13 09:41:53,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:41:53,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640014525] [2020-10-13 09:41:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:41:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:53,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:53,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 09:41:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-13 09:41:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:41:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:41:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 09:41:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:53,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:41:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:53,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:41:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 09:41:53,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:41:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:41:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:41:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:53,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:41:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:41:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:41:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:41:54,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:41:54,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:41:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-13 09:41:54,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:41:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:41:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:41:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 09:41:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:41:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:41:54,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640014525] [2020-10-13 09:41:54,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:41:54,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:41:54,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277205484] [2020-10-13 09:41:54,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:41:54,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:41:54,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:41:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:41:54,223 INFO L87 Difference]: Start difference. First operand 5405 states and 6817 transitions. Second operand 7 states. [2020-10-13 09:42:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:11,256 INFO L93 Difference]: Finished difference Result 14919 states and 19392 transitions. [2020-10-13 09:42:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:42:11,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-13 09:42:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:11,300 INFO L225 Difference]: With dead ends: 14919 [2020-10-13 09:42:11,301 INFO L226 Difference]: Without dead ends: 7289 [2020-10-13 09:42:11,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:42:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7289 states. [2020-10-13 09:42:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7289 to 6408. [2020-10-13 09:42:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6408 states. [2020-10-13 09:42:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6408 states to 6408 states and 7618 transitions. [2020-10-13 09:42:11,527 INFO L78 Accepts]: Start accepts. Automaton has 6408 states and 7618 transitions. Word has length 114 [2020-10-13 09:42:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:11,528 INFO L479 AbstractCegarLoop]: Abstraction has 6408 states and 7618 transitions. [2020-10-13 09:42:11,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:42:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 6408 states and 7618 transitions. [2020-10-13 09:42:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 09:42:11,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:11,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:42:11,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:42:11,531 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:11,532 INFO L82 PathProgramCache]: Analyzing trace with hash 891881397, now seen corresponding path program 1 times [2020-10-13 09:42:11,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:11,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137365494] [2020-10-13 09:42:11,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:12,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:12,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-13 09:42:12,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:42:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-13 09:42:12,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:12,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:42:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:42:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:12,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:12,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:12,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:12,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:42:12,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:12,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:13,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:13,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:42:13,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:42:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:13,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:42:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:13,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:13,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:42:13,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:42:13,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 09:42:13,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-13 09:42:13,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137365494] [2020-10-13 09:42:13,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:13,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:42:13,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835840601] [2020-10-13 09:42:13,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:42:13,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:13,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:42:13,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:42:13,327 INFO L87 Difference]: Start difference. First operand 6408 states and 7618 transitions. Second operand 6 states. [2020-10-13 09:42:23,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:23,808 INFO L93 Difference]: Finished difference Result 13687 states and 16544 transitions. [2020-10-13 09:42:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:23,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-10-13 09:42:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:23,865 INFO L225 Difference]: With dead ends: 13687 [2020-10-13 09:42:23,866 INFO L226 Difference]: Without dead ends: 7285 [2020-10-13 09:42:23,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:42:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2020-10-13 09:42:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 6848. [2020-10-13 09:42:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6848 states. [2020-10-13 09:42:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6848 states to 6848 states and 8363 transitions. [2020-10-13 09:42:24,073 INFO L78 Accepts]: Start accepts. Automaton has 6848 states and 8363 transitions. Word has length 177 [2020-10-13 09:42:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:24,076 INFO L479 AbstractCegarLoop]: Abstraction has 6848 states and 8363 transitions. [2020-10-13 09:42:24,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:42:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 6848 states and 8363 transitions. [2020-10-13 09:42:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-13 09:42:24,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:24,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:42:24,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:42:24,079 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:24,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1048471559, now seen corresponding path program 1 times [2020-10-13 09:42:24,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:24,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074286643] [2020-10-13 09:42:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:24,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:28,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:28,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 09:42:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:42:28,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4295 [2020-10-13 09:42:28,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:28,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:42:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:42:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:42:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:28,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:28,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:28,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:42:28,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:28,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:28,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:28,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:28,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:42:28,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:28,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:42:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:28,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:42:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:28,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:28,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:42:28,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:42:28,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:28,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:42:28,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:42:28,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074286643] [2020-10-13 09:42:28,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:28,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:42:28,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481428748] [2020-10-13 09:42:28,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:28,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:28,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:28,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:28,864 INFO L87 Difference]: Start difference. First operand 6848 states and 8363 transitions. Second operand 5 states. [2020-10-13 09:42:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:44,090 INFO L93 Difference]: Finished difference Result 17730 states and 21989 transitions. [2020-10-13 09:42:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:44,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-10-13 09:42:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:44,134 INFO L225 Difference]: With dead ends: 17730 [2020-10-13 09:42:44,134 INFO L226 Difference]: Without dead ends: 10888 [2020-10-13 09:42:44,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:42:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10888 states. [2020-10-13 09:42:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10888 to 9984. [2020-10-13 09:42:44,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9984 states. [2020-10-13 09:42:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9984 states to 9984 states and 12555 transitions. [2020-10-13 09:42:44,476 INFO L78 Accepts]: Start accepts. Automaton has 9984 states and 12555 transitions. Word has length 179 [2020-10-13 09:42:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:44,477 INFO L479 AbstractCegarLoop]: Abstraction has 9984 states and 12555 transitions. [2020-10-13 09:42:44,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:42:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9984 states and 12555 transitions. [2020-10-13 09:42:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 09:42:44,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:44,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:42:44,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:42:44,482 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:44,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1563715740, now seen corresponding path program 1 times [2020-10-13 09:42:44,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:44,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532909477] [2020-10-13 09:42:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:46,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:46,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 09:42:46,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:42:46,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1546 [2020-10-13 09:42:46,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:42:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-13 09:42:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:42:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:42:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:46,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:46,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:46,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:42:46,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:46,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:42:46,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:46,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:46,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:46,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:42:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:46,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:46,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:42:46,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 09:42:46,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:42:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:42:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:42:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:42:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:46,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:42:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:42:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 09:42:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:42:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 09:42:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:42:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:42:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:42:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 09:42:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:42:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:42:46,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532909477] [2020-10-13 09:42:46,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:42:46,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:42:46,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294686788] [2020-10-13 09:42:46,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:42:46,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:42:46,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:42:46,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:42:46,590 INFO L87 Difference]: Start difference. First operand 9984 states and 12555 transitions. Second operand 5 states. [2020-10-13 09:42:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:42:59,347 INFO L93 Difference]: Finished difference Result 25716 states and 33202 transitions. [2020-10-13 09:42:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:42:59,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-13 09:42:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:42:59,409 INFO L225 Difference]: With dead ends: 25716 [2020-10-13 09:42:59,409 INFO L226 Difference]: Without dead ends: 14833 [2020-10-13 09:42:59,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:42:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14833 states. [2020-10-13 09:42:59,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14833 to 13953. [2020-10-13 09:42:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13953 states. [2020-10-13 09:42:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13953 states to 13953 states and 17200 transitions. [2020-10-13 09:42:59,775 INFO L78 Accepts]: Start accepts. Automaton has 13953 states and 17200 transitions. Word has length 225 [2020-10-13 09:42:59,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:42:59,775 INFO L479 AbstractCegarLoop]: Abstraction has 13953 states and 17200 transitions. [2020-10-13 09:42:59,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:42:59,776 INFO L276 IsEmpty]: Start isEmpty. Operand 13953 states and 17200 transitions. [2020-10-13 09:42:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 09:42:59,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:42:59,781 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:42:59,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:42:59,781 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:42:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:42:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1154674112, now seen corresponding path program 1 times [2020-10-13 09:42:59,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:42:59,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9706638] [2020-10-13 09:42:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:42:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:42:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:02,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:02,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 09:43:02,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:43:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2908 [2020-10-13 09:43:02,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-13 09:43:02,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:43:02,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:02,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:02,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:02,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:43:02,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:02,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:02,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:02,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:02,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:43:02,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:43:02,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:43:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:02,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:02,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:43:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:43:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 09:43:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:03,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:03,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:43:03,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:43:03,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:43:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-10-13 09:43:03,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9706638] [2020-10-13 09:43:03,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:03,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:43:03,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227226683] [2020-10-13 09:43:03,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:43:03,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:03,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:43:03,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:43:03,225 INFO L87 Difference]: Start difference. First operand 13953 states and 17200 transitions. Second operand 5 states. [2020-10-13 09:43:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:19,122 INFO L93 Difference]: Finished difference Result 32746 states and 41306 transitions. [2020-10-13 09:43:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:43:19,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-13 09:43:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:19,200 INFO L225 Difference]: With dead ends: 32746 [2020-10-13 09:43:19,200 INFO L226 Difference]: Without dead ends: 17886 [2020-10-13 09:43:19,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 09:43:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17886 states. [2020-10-13 09:43:19,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17886 to 17437. [2020-10-13 09:43:19,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17437 states. [2020-10-13 09:43:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17437 states to 17437 states and 21853 transitions. [2020-10-13 09:43:19,642 INFO L78 Accepts]: Start accepts. Automaton has 17437 states and 21853 transitions. Word has length 265 [2020-10-13 09:43:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:19,642 INFO L479 AbstractCegarLoop]: Abstraction has 17437 states and 21853 transitions. [2020-10-13 09:43:19,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:43:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17437 states and 21853 transitions. [2020-10-13 09:43:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-13 09:43:19,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:19,649 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 09:43:19,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:43:19,650 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:19,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1254423145, now seen corresponding path program 1 times [2020-10-13 09:43:19,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:19,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470358491] [2020-10-13 09:43:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:22,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:22,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-13 09:43:22,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:43:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2291 [2020-10-13 09:43:22,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:22,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 09:43:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 09:43:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:22,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:22,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:22,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:22,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:43:22,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:22,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:22,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:22,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:22,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:22,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:43:22,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:22,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 09:43:22,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:22,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:43:22,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:43:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:22,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:22,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 09:43:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 09:43:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:43:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:43:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:43:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 09:43:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:22,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:22,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:43:22,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:43:22,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:22,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:43:22,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:43:22,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:43:22,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 104 proven. 72 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 09:43:22,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470358491] [2020-10-13 09:43:22,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:22,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:43:22,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065384025] [2020-10-13 09:43:22,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:43:22,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:22,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:43:22,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:43:22,660 INFO L87 Difference]: Start difference. First operand 17437 states and 21853 transitions. Second operand 7 states. [2020-10-13 09:43:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:43:37,936 INFO L93 Difference]: Finished difference Result 42242 states and 53763 transitions. [2020-10-13 09:43:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:43:37,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 274 [2020-10-13 09:43:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:43:38,023 INFO L225 Difference]: With dead ends: 42242 [2020-10-13 09:43:38,023 INFO L226 Difference]: Without dead ends: 24811 [2020-10-13 09:43:38,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:43:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24811 states. [2020-10-13 09:43:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24811 to 24801. [2020-10-13 09:43:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24801 states. [2020-10-13 09:43:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24801 states to 24801 states and 29897 transitions. [2020-10-13 09:43:38,607 INFO L78 Accepts]: Start accepts. Automaton has 24801 states and 29897 transitions. Word has length 274 [2020-10-13 09:43:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:43:38,608 INFO L479 AbstractCegarLoop]: Abstraction has 24801 states and 29897 transitions. [2020-10-13 09:43:38,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:43:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 24801 states and 29897 transitions. [2020-10-13 09:43:38,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-13 09:43:38,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:43:38,624 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:43:38,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:43:38,624 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:43:38,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:43:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2146737034, now seen corresponding path program 1 times [2020-10-13 09:43:38,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:43:38,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658683570] [2020-10-13 09:43:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:43:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-13 09:43:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1674 [2020-10-13 09:43:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 09:43:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:43:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 370 [2020-10-13 09:43:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:40,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:43:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:40,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:40,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:43:40,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:43:40,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:43:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:43:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:43:40,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:43:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-13 09:43:41,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-13 09:43:41,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:43:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:43:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 350 [2020-10-13 09:43:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:43:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:43:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:43:41,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:43:41,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 09:43:41,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:43:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:43:41,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:43:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:43:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:43:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 09:43:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:43:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:43:41,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658683570] [2020-10-13 09:43:41,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:43:41,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:43:41,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146869825] [2020-10-13 09:43:41,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:43:41,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:43:41,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:43:41,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:43:41,976 INFO L87 Difference]: Start difference. First operand 24801 states and 29897 transitions. Second operand 8 states. [2020-10-13 09:44:09,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:44:09,881 INFO L93 Difference]: Finished difference Result 63786 states and 78054 transitions. [2020-10-13 09:44:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:44:09,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 364 [2020-10-13 09:44:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:44:10,005 INFO L225 Difference]: With dead ends: 63786 [2020-10-13 09:44:10,005 INFO L226 Difference]: Without dead ends: 38111 [2020-10-13 09:44:10,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:44:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38111 states. [2020-10-13 09:44:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38111 to 38076. [2020-10-13 09:44:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38076 states. [2020-10-13 09:44:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38076 states to 38076 states and 46864 transitions. [2020-10-13 09:44:12,031 INFO L78 Accepts]: Start accepts. Automaton has 38076 states and 46864 transitions. Word has length 364 [2020-10-13 09:44:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:44:12,031 INFO L479 AbstractCegarLoop]: Abstraction has 38076 states and 46864 transitions. [2020-10-13 09:44:12,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:44:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 38076 states and 46864 transitions. [2020-10-13 09:44:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-13 09:44:12,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:44:12,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-10-13 09:44:12,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:44:12,051 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:44:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:44:12,053 INFO L82 PathProgramCache]: Analyzing trace with hash -847737845, now seen corresponding path program 1 times [2020-10-13 09:44:12,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:44:12,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329110158] [2020-10-13 09:44:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:44:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:13,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:14,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:14,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-13 09:44:14,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:44:14,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-10-13 09:44:14,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:44:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:44:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 383 [2020-10-13 09:44:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:44:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:14,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:14,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:44:14,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:14,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:44:14,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:44:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:44:14,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:44:14,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:14,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:44:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:14,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:14,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:44:14,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:14,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:44:14,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:14,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:44:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:44:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 09:44:14,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:44:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:44:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:44:14,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:44:14,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-13 09:44:14,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:44:14,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 09:44:14,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:44:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:44:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:44:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 289 [2020-10-13 09:44:14,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:44:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 101 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:44:15,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329110158] [2020-10-13 09:44:15,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:44:15,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 09:44:15,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528863698] [2020-10-13 09:44:15,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 09:44:15,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:44:15,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 09:44:15,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 09:44:15,186 INFO L87 Difference]: Start difference. First operand 38076 states and 46864 transitions. Second operand 10 states.