/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/Problem15_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:57:19,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:57:19,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:57:19,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:57:19,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:57:19,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:57:19,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:57:19,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:57:19,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:57:19,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:57:19,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:57:19,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:57:19,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:57:19,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:57:19,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:57:19,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:57:19,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:57:19,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:57:19,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:57:19,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:57:19,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:57:19,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:57:19,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:57:19,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:57:19,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:57:19,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:57:19,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:57:19,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:57:19,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:57:19,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:57:19,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:57:19,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:57:19,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:57:19,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:57:19,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:57:19,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:57:19,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:57:19,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:57:19,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:57:19,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:57:19,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:57:19,282 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 08:57:19,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:57:19,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:57:19,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:57:19,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:57:19,324 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:57:19,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:57:19,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:57:19,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:57:19,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:57:19,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:57:19,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:57:19,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:57:19,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:57:19,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:57:19,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:57:19,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:57:19,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:57:19,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:57:19,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:57:19,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:57:19,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:57:19,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:57:19,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:57:19,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:57:19,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:57:19,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:57:19,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:57:19,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:57:19,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:57:19,331 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 08:57:19,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:57:19,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:57:19,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:57:19,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:57:19,632 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:57:19,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-13 08:57:19,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25b6cb6f/70ef28d795b14971b3da845faab126d7/FLAGa54f87bf0 [2020-10-13 08:57:20,381 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:57:20,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-13 08:57:20,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25b6cb6f/70ef28d795b14971b3da845faab126d7/FLAGa54f87bf0 [2020-10-13 08:57:20,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b25b6cb6f/70ef28d795b14971b3da845faab126d7 [2020-10-13 08:57:20,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:57:20,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:57:20,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:20,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:57:20,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:57:20,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:20" (1/1) ... [2020-10-13 08:57:20,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea0c575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:20, skipping insertion in model container [2020-10-13 08:57:20,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:57:20" (1/1) ... [2020-10-13 08:57:20,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:57:20,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:57:21,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:21,626 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:57:21,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:57:21,915 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:57:21,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21 WrapperNode [2020-10-13 08:57:21,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:57:21,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:57:21,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:57:21,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:57:21,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (1/1) ... [2020-10-13 08:57:21,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (1/1) ... [2020-10-13 08:57:22,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (1/1) ... [2020-10-13 08:57:22,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (1/1) ... [2020-10-13 08:57:22,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (1/1) ... [2020-10-13 08:57:22,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (1/1) ... [2020-10-13 08:57:22,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (1/1) ... [2020-10-13 08:57:22,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:57:22,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:57:22,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:57:22,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:57:22,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (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 08:57:22,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:57:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:57:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:57:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:57:22,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:57:22,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:57:22,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:57:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:57:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:57:28,396 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:57:28,397 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:57:28,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:28 BoogieIcfgContainer [2020-10-13 08:57:28,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:57:28,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:57:28,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:57:28,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:57:28,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:57:20" (1/3) ... [2020-10-13 08:57:28,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5195b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:28, skipping insertion in model container [2020-10-13 08:57:28,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:57:21" (2/3) ... [2020-10-13 08:57:28,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5195b708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:57:28, skipping insertion in model container [2020-10-13 08:57:28,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:57:28" (3/3) ... [2020-10-13 08:57:28,414 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label04.c [2020-10-13 08:57:28,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:57:28,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:57:28,450 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:57:28,479 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:57:28,479 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:57:28,479 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:57:28,479 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:57:28,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:57:28,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:57:28,480 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:57:28,480 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:57:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 08:57:28,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 08:57:28,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:28,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:57:28,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2134000803, now seen corresponding path program 1 times [2020-10-13 08:57:28,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:28,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620715258] [2020-10-13 08:57:28,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:28,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:29,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 08:57:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-13 08:57:29,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:29,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:57:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:57:29,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 08:57:29,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:57:29,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:29,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:29,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:29,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:57:29,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:29,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:57:29,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:29,211 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 08:57:29,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620715258] [2020-10-13 08:57:29,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:57:29,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:57:29,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191951928] [2020-10-13 08:57:29,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:57:29,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:29,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:57:29,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:57:29,240 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 08:57:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:36,768 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 08:57:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:36,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-13 08:57:36,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:36,792 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 08:57:36,792 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 08:57:36,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 08:57:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 08:57:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 08:57:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 08:57:36,903 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 37 [2020-10-13 08:57:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:36,904 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 08:57:36,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:57:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 08:57:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 08:57:36,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:36,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:36,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:57:36,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:36,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1961730458, now seen corresponding path program 1 times [2020-10-13 08:57:36,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:36,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842751601] [2020-10-13 08:57:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:37,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 08:57:38,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:57:38,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-13 08:57:38,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:57:38,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:57:38,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:57:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:38,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:38,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:57:38,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:38,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:38,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:57:38,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:38,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:38,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:57:38,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:57:38,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:57:38,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:57:38,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842751601] [2020-10-13 08:57:38,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:38,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:38,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025528294] [2020-10-13 08:57:38,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:38,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:38,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:38,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:38,732 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-13 08:57:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:44,522 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-13 08:57:44,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:44,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 08:57:44,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:44,533 INFO L225 Difference]: With dead ends: 2008 [2020-10-13 08:57:44,533 INFO L226 Difference]: Without dead ends: 1323 [2020-10-13 08:57:44,536 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 08:57:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-13 08:57:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-13 08:57:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-13 08:57:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-13 08:57:44,580 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 106 [2020-10-13 08:57:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:44,580 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-13 08:57:44,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:57:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-13 08:57:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 08:57:44,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:44,585 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:57:44,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:57:44,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:44,586 INFO L82 PathProgramCache]: Analyzing trace with hash -819121034, now seen corresponding path program 1 times [2020-10-13 08:57:44,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:44,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605218861] [2020-10-13 08:57:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:48,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:48,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 08:57:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:57:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4166 [2020-10-13 08:57:48,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:57:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-13 08:57:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:57:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:57:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:48,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:48,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:57:48,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:57:48,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:48,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:57:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:48,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:48,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:57:48,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 08:57:48,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:48,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:57:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:57:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:57:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:49,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:57:49,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:57:49,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:57:49,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 08:57:49,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:57:49,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:57:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:57:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:57:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:57:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 08:57:49,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605218861] [2020-10-13 08:57:49,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:57:49,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:57:49,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583882997] [2020-10-13 08:57:49,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:57:49,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:57:49,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:57:49,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:57:49,194 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 5 states. [2020-10-13 08:57:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:57:57,243 INFO L93 Difference]: Finished difference Result 3263 states and 4368 transitions. [2020-10-13 08:57:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:57:57,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-13 08:57:57,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:57:57,264 INFO L225 Difference]: With dead ends: 3263 [2020-10-13 08:57:57,264 INFO L226 Difference]: Without dead ends: 1952 [2020-10-13 08:57:57,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 08:57:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2020-10-13 08:57:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1948. [2020-10-13 08:57:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-10-13 08:57:57,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2426 transitions. [2020-10-13 08:57:57,330 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2426 transitions. Word has length 211 [2020-10-13 08:57:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:57:57,332 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2426 transitions. [2020-10-13 08:57:57,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:57:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2426 transitions. [2020-10-13 08:57:57,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-13 08:57:57,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:57:57,337 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:57:57,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:57:57,337 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:57:57,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:57:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash -625599165, now seen corresponding path program 1 times [2020-10-13 08:57:57,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:57:57,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603186990] [2020-10-13 08:57:57,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:57:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:57:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:57:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:00,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:02,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-13 08:58:02,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 08:58:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 08:58:02,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 08:58:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:58:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:02,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:02,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:02,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:02,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:02,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:02,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:58:02,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:58:02,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:02,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:58:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:02,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:02,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:58:02,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:58:02,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:02,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:58:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 08:58:02,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603186990] [2020-10-13 08:58:02,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:02,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:02,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483228395] [2020-10-13 08:58:02,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:02,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:02,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:02,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:02,880 INFO L87 Difference]: Start difference. First operand 1948 states and 2426 transitions. Second operand 5 states. [2020-10-13 08:58:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:08,764 INFO L93 Difference]: Finished difference Result 4833 states and 6196 transitions. [2020-10-13 08:58:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:08,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-13 08:58:08,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:08,784 INFO L225 Difference]: With dead ends: 4833 [2020-10-13 08:58:08,784 INFO L226 Difference]: Without dead ends: 2891 [2020-10-13 08:58:08,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 08:58:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2020-10-13 08:58:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2885. [2020-10-13 08:58:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2885 states. [2020-10-13 08:58:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3664 transitions. [2020-10-13 08:58:08,865 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3664 transitions. Word has length 255 [2020-10-13 08:58:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:08,866 INFO L479 AbstractCegarLoop]: Abstraction has 2885 states and 3664 transitions. [2020-10-13 08:58:08,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3664 transitions. [2020-10-13 08:58:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-13 08:58:08,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:08,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:58:08,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:58:08,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:08,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1019965951, now seen corresponding path program 1 times [2020-10-13 08:58:08,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:08,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034953999] [2020-10-13 08:58:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:09,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:11,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:11,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-13 08:58:11,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:58:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-10-13 08:58:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-13 08:58:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:58:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:58:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:12,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:12,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:12,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:12,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:12,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:12,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:58:12,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:58:12,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:12,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:58:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:12,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:12,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:58:12,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 08:58:12,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 08:58:12,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 08:58:12,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034953999] [2020-10-13 08:58:12,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:12,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:58:12,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493326112] [2020-10-13 08:58:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:58:12,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:12,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:58:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:12,581 INFO L87 Difference]: Start difference. First operand 2885 states and 3664 transitions. Second operand 6 states. [2020-10-13 08:58:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:20,400 INFO L93 Difference]: Finished difference Result 6710 states and 8842 transitions. [2020-10-13 08:58:20,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:58:20,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 255 [2020-10-13 08:58:20,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:20,426 INFO L225 Difference]: With dead ends: 6710 [2020-10-13 08:58:20,426 INFO L226 Difference]: Without dead ends: 3831 [2020-10-13 08:58:20,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:58:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2020-10-13 08:58:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3822. [2020-10-13 08:58:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3822 states. [2020-10-13 08:58:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 4966 transitions. [2020-10-13 08:58:20,566 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 4966 transitions. Word has length 255 [2020-10-13 08:58:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:20,567 INFO L479 AbstractCegarLoop]: Abstraction has 3822 states and 4966 transitions. [2020-10-13 08:58:20,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:58:20,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 4966 transitions. [2020-10-13 08:58:20,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-13 08:58:20,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:20,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:58:20,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:58:20,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:20,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:20,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1112912639, now seen corresponding path program 1 times [2020-10-13 08:58:20,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:20,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715037503] [2020-10-13 08:58:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:22,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:25,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:25,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-13 08:58:25,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:58:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4616 [2020-10-13 08:58:25,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-13 08:58:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 08:58:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:25,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:25,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:25,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:58:25,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:25,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:25,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:25,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:25,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:58:25,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:25,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 08:58:25,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:25,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:58:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:25,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 08:58:25,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 08:58:25,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 08:58:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-13 08:58:25,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715037503] [2020-10-13 08:58:25,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:25,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:25,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836552952] [2020-10-13 08:58:25,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:25,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:25,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:25,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:25,747 INFO L87 Difference]: Start difference. First operand 3822 states and 4966 transitions. Second operand 5 states. [2020-10-13 08:58:35,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:35,351 INFO L93 Difference]: Finished difference Result 10130 states and 13503 transitions. [2020-10-13 08:58:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:35,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-13 08:58:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:35,385 INFO L225 Difference]: With dead ends: 10130 [2020-10-13 08:58:35,385 INFO L226 Difference]: Without dead ends: 6314 [2020-10-13 08:58:35,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 08:58:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2020-10-13 08:58:35,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 6308. [2020-10-13 08:58:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6308 states. [2020-10-13 08:58:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 8382 transitions. [2020-10-13 08:58:35,546 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 8382 transitions. Word has length 266 [2020-10-13 08:58:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:35,547 INFO L479 AbstractCegarLoop]: Abstraction has 6308 states and 8382 transitions. [2020-10-13 08:58:35,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 8382 transitions. [2020-10-13 08:58:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-13 08:58:35,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:35,554 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:35,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:58:35,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:35,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2068621896, now seen corresponding path program 1 times [2020-10-13 08:58:35,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:35,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424105091] [2020-10-13 08:58:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:35,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:35,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:40,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:40,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:58:40,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:58:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 08:58:40,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 273 [2020-10-13 08:58:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:58:40,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:40,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:40,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:40,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:40,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:58:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:40,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:40,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:58:40,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:58:40,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:58:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:40,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:40,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:40,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:58:40,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:58:40,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:40,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 08:58:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:40,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 08:58:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:58:40,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:40,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 08:58:40,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-13 08:58:40,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424105091] [2020-10-13 08:58:40,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:40,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:40,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814152191] [2020-10-13 08:58:40,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:41,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:41,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:41,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:41,001 INFO L87 Difference]: Start difference. First operand 6308 states and 8382 transitions. Second operand 5 states. [2020-10-13 08:58:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:47,965 INFO L93 Difference]: Finished difference Result 13854 states and 18664 transitions. [2020-10-13 08:58:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:47,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-13 08:58:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:48,003 INFO L225 Difference]: With dead ends: 13854 [2020-10-13 08:58:48,003 INFO L226 Difference]: Without dead ends: 7552 [2020-10-13 08:58:48,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 08:58:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2020-10-13 08:58:48,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 7548. [2020-10-13 08:58:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7548 states. [2020-10-13 08:58:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 10121 transitions. [2020-10-13 08:58:48,217 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 10121 transitions. Word has length 296 [2020-10-13 08:58:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:48,217 INFO L479 AbstractCegarLoop]: Abstraction has 7548 states and 10121 transitions. [2020-10-13 08:58:48,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 10121 transitions. [2020-10-13 08:58:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-13 08:58:48,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:48,229 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:58:48,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:58:48,229 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:48,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:48,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1879302503, now seen corresponding path program 1 times [2020-10-13 08:58:48,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:48,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227706521] [2020-10-13 08:58:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:48,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:50,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:53,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:53,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-13 08:58:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:58:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 08:58:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:58:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 288 [2020-10-13 08:58:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:58:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:53,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:58:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:58:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:58:53,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:58:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:58:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:53,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:53,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:58:53,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:53,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:58:53,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:58:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:53,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:53,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 08:58:53,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:58:53,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:58:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:58:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-13 08:58:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:53,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:53,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:58:53,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-13 08:58:53,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:58:53,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:58:53,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:58:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:58:53,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:58:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:58:53,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:58:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-13 08:58:54,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227706521] [2020-10-13 08:58:54,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:58:54,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:58:54,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420243621] [2020-10-13 08:58:54,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:58:54,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:58:54,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:58:54,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:58:54,003 INFO L87 Difference]: Start difference. First operand 7548 states and 10121 transitions. Second operand 5 states. [2020-10-13 08:58:58,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:58:58,907 INFO L93 Difference]: Finished difference Result 15119 states and 20307 transitions. [2020-10-13 08:58:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:58:58,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 311 [2020-10-13 08:58:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:58:58,946 INFO L225 Difference]: With dead ends: 15119 [2020-10-13 08:58:58,946 INFO L226 Difference]: Without dead ends: 7552 [2020-10-13 08:58:58,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:58:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2020-10-13 08:58:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 7548. [2020-10-13 08:58:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7548 states. [2020-10-13 08:58:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 10106 transitions. [2020-10-13 08:58:59,138 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 10106 transitions. Word has length 311 [2020-10-13 08:58:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:58:59,139 INFO L479 AbstractCegarLoop]: Abstraction has 7548 states and 10106 transitions. [2020-10-13 08:58:59,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:58:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 10106 transitions. [2020-10-13 08:58:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-13 08:58:59,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:58:59,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:58:59,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:58:59,153 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:58:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:58:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash 923420616, now seen corresponding path program 1 times [2020-10-13 08:58:59,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:58:59,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563402521] [2020-10-13 08:58:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:58:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:58:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:58:59,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-13 08:59:02,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:59:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2856 [2020-10-13 08:59:02,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-13 08:59:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 08:59:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:59:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:02,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 08:59:02,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:59:02,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:02,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:59:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:02,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 08:59:02,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 08:59:02,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:59:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:02,426 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-13 08:59:02,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563402521] [2020-10-13 08:59:02,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:02,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:02,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538848063] [2020-10-13 08:59:02,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:02,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:02,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:02,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:02,429 INFO L87 Difference]: Start difference. First operand 7548 states and 10106 transitions. Second operand 5 states. [2020-10-13 08:59:11,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:11,830 INFO L93 Difference]: Finished difference Result 20662 states and 28534 transitions. [2020-10-13 08:59:11,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:11,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-13 08:59:11,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:11,884 INFO L225 Difference]: With dead ends: 20662 [2020-10-13 08:59:11,884 INFO L226 Difference]: Without dead ends: 13120 [2020-10-13 08:59:11,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 08:59:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13120 states. [2020-10-13 08:59:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13120 to 13116. [2020-10-13 08:59:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13116 states. [2020-10-13 08:59:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13116 states to 13116 states and 17599 transitions. [2020-10-13 08:59:12,207 INFO L78 Accepts]: Start accepts. Automaton has 13116 states and 17599 transitions. Word has length 336 [2020-10-13 08:59:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:12,208 INFO L479 AbstractCegarLoop]: Abstraction has 13116 states and 17599 transitions. [2020-10-13 08:59:12,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13116 states and 17599 transitions. [2020-10-13 08:59:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-10-13 08:59:12,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:12,239 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:59:12,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:59:12,239 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:12,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1781967844, now seen corresponding path program 1 times [2020-10-13 08:59:12,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:12,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091867624] [2020-10-13 08:59:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:14,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 08:59:14,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:14,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:14,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:14,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:14,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:14,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:14,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:14,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:14,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 08:59:14,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:59:14,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:14,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:59:14,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:14,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 08:59:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:14,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:14,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 08:59:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:59:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-13 08:59:14,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-13 08:59:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:15,812 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:59:15,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091867624] [2020-10-13 08:59:15,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:15,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:59:15,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646182284] [2020-10-13 08:59:15,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:59:15,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:15,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:59:15,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:15,815 INFO L87 Difference]: Start difference. First operand 13116 states and 17599 transitions. Second operand 6 states. [2020-10-13 08:59:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:24,664 INFO L93 Difference]: Finished difference Result 26306 states and 35372 transitions. [2020-10-13 08:59:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:59:24,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 404 [2020-10-13 08:59:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:24,715 INFO L225 Difference]: With dead ends: 26306 [2020-10-13 08:59:24,715 INFO L226 Difference]: Without dead ends: 13156 [2020-10-13 08:59:24,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:59:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13156 states. [2020-10-13 08:59:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13156 to 13118. [2020-10-13 08:59:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13118 states. [2020-10-13 08:59:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13118 states to 13118 states and 17558 transitions. [2020-10-13 08:59:25,016 INFO L78 Accepts]: Start accepts. Automaton has 13118 states and 17558 transitions. Word has length 404 [2020-10-13 08:59:25,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:25,016 INFO L479 AbstractCegarLoop]: Abstraction has 13118 states and 17558 transitions. [2020-10-13 08:59:25,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:59:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 13118 states and 17558 transitions. [2020-10-13 08:59:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-13 08:59:25,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:25,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:59:25,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:59:25,047 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:25,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1615574090, now seen corresponding path program 1 times [2020-10-13 08:59:25,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:25,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773546441] [2020-10-13 08:59:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:25,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:25,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:27,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-13 08:59:30,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:59:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 08:59:30,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-10-13 08:59:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:59:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:30,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:30,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:30,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:30,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:30,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:30,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:59:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:30,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:59:30,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:59:30,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 08:59:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:30,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 08:59:30,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:30,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:59:30,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:30,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 08:59:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-13 08:59:30,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773546441] [2020-10-13 08:59:30,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:30,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:59:30,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595083318] [2020-10-13 08:59:30,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:59:30,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:30,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:59:30,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:59:30,705 INFO L87 Difference]: Start difference. First operand 13118 states and 17558 transitions. Second operand 5 states. [2020-10-13 08:59:38,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:38,885 INFO L93 Difference]: Finished difference Result 26259 states and 35186 transitions. [2020-10-13 08:59:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:59:38,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 468 [2020-10-13 08:59:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:38,941 INFO L225 Difference]: With dead ends: 26259 [2020-10-13 08:59:38,942 INFO L226 Difference]: Without dead ends: 13122 [2020-10-13 08:59:38,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:59:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13122 states. [2020-10-13 08:59:39,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 13118. [2020-10-13 08:59:39,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13118 states. [2020-10-13 08:59:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13118 states to 13118 states and 17554 transitions. [2020-10-13 08:59:39,261 INFO L78 Accepts]: Start accepts. Automaton has 13118 states and 17554 transitions. Word has length 468 [2020-10-13 08:59:39,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:39,262 INFO L479 AbstractCegarLoop]: Abstraction has 13118 states and 17554 transitions. [2020-10-13 08:59:39,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:59:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13118 states and 17554 transitions. [2020-10-13 08:59:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-13 08:59:39,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:39,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:59:39,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:59:39,283 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:39,284 INFO L82 PathProgramCache]: Analyzing trace with hash -886450386, now seen corresponding path program 1 times [2020-10-13 08:59:39,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:39,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694324719] [2020-10-13 08:59:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-13 08:59:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:59:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3995 [2020-10-13 08:59:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 08:59:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:59:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:43,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:59:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:59:43,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:43,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:59:43,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:43,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:43,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:59:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 08:59:43,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-13 08:59:43,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:59:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:59:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 08:59:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:43,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:59:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:43,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:59:43,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:59:43,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:59:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:59:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:59:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 08:59:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:43,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:43,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:59:43,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:59:43,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:59:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:59:43,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:59:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:59:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 08:59:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:59:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:59:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 171 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 08:59:44,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694324719] [2020-10-13 08:59:44,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:59:44,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:59:44,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353831749] [2020-10-13 08:59:44,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:59:44,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:59:44,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:59:44,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:59:44,075 INFO L87 Difference]: Start difference. First operand 13118 states and 17554 transitions. Second operand 7 states. [2020-10-13 08:59:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:59:56,928 INFO L93 Difference]: Finished difference Result 30740 states and 42702 transitions. [2020-10-13 08:59:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:59:56,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-13 08:59:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:59:56,979 INFO L225 Difference]: With dead ends: 30740 [2020-10-13 08:59:56,980 INFO L226 Difference]: Without dead ends: 17628 [2020-10-13 08:59:57,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:59:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17628 states. [2020-10-13 08:59:57,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17628 to 17584. [2020-10-13 08:59:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17584 states. [2020-10-13 08:59:57,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17584 states to 17584 states and 23619 transitions. [2020-10-13 08:59:57,421 INFO L78 Accepts]: Start accepts. Automaton has 17584 states and 23619 transitions. Word has length 470 [2020-10-13 08:59:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:59:57,422 INFO L479 AbstractCegarLoop]: Abstraction has 17584 states and 23619 transitions. [2020-10-13 08:59:57,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:59:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 17584 states and 23619 transitions. [2020-10-13 08:59:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-13 08:59:57,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:59:57,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:59:57,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:59:57,450 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:59:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:59:57,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1844793717, now seen corresponding path program 1 times [2020-10-13 08:59:57,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:59:57,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816521443] [2020-10-13 08:59:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:59:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:59:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:58,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:59:59,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:01,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 483 [2020-10-13 09:00:01,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:00:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4045 [2020-10-13 09:00:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-13 09:00:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 09:00:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:01,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:01,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:01,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:01,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:00:01,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:01,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:01,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:01,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:00:01,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 09:00:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-13 09:00:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 09:00:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:01,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:02,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:02,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 09:00:02,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:00:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-13 09:00:02,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-13 09:00:02,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:00:02,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816521443] [2020-10-13 09:00:02,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:02,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:00:02,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975240379] [2020-10-13 09:00:02,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:00:02,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:02,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:00:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:00:02,794 INFO L87 Difference]: Start difference. First operand 17584 states and 23619 transitions. Second operand 7 states. [2020-10-13 09:00:13,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:13,675 INFO L93 Difference]: Finished difference Result 35739 states and 53099 transitions. [2020-10-13 09:00:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:00:13,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-13 09:00:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:13,783 INFO L225 Difference]: With dead ends: 35739 [2020-10-13 09:00:13,783 INFO L226 Difference]: Without dead ends: 18106 [2020-10-13 09:00:13,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:00:13,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18106 states. [2020-10-13 09:00:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18106 to 17636. [2020-10-13 09:00:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17636 states. [2020-10-13 09:00:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17636 states to 17636 states and 23213 transitions. [2020-10-13 09:00:14,622 INFO L78 Accepts]: Start accepts. Automaton has 17636 states and 23213 transitions. Word has length 471 [2020-10-13 09:00:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:14,623 INFO L479 AbstractCegarLoop]: Abstraction has 17636 states and 23213 transitions. [2020-10-13 09:00:14,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:00:14,623 INFO L276 IsEmpty]: Start isEmpty. Operand 17636 states and 23213 transitions. [2020-10-13 09:00:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-13 09:00:14,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:14,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:00:14,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:00:14,644 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:14,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:14,645 INFO L82 PathProgramCache]: Analyzing trace with hash 178206274, now seen corresponding path program 1 times [2020-10-13 09:00:14,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:14,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703590427] [2020-10-13 09:00:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:19,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:19,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-13 09:00:19,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:00:19,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:00:19,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:00:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:00:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:19,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:19,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:19,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:19,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:19,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:00:19,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:19,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:19,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:19,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:20,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:20,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:00:20,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-13 09:00:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:20,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:00:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:20,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:00:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:20,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:20,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:20,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:00:20,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:20,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 09:00:20,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:20,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:00:20,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:00:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:20,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:00:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 09:00:20,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:00:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 202 proven. 110 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 09:00:20,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703590427] [2020-10-13 09:00:20,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:20,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:00:20,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905472735] [2020-10-13 09:00:20,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:00:20,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:00:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:00:20,738 INFO L87 Difference]: Start difference. First operand 17636 states and 23213 transitions. Second operand 8 states. [2020-10-13 09:00:29,499 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-13 09:00:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:37,151 INFO L93 Difference]: Finished difference Result 41851 states and 55761 transitions. [2020-10-13 09:00:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 09:00:37,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 501 [2020-10-13 09:00:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:37,232 INFO L225 Difference]: With dead ends: 41851 [2020-10-13 09:00:37,232 INFO L226 Difference]: Without dead ends: 24221 [2020-10-13 09:00:37,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-13 09:00:37,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24221 states. [2020-10-13 09:00:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24221 to 24193. [2020-10-13 09:00:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24193 states. [2020-10-13 09:00:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24193 states to 24193 states and 32189 transitions. [2020-10-13 09:00:37,776 INFO L78 Accepts]: Start accepts. Automaton has 24193 states and 32189 transitions. Word has length 501 [2020-10-13 09:00:37,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:37,776 INFO L479 AbstractCegarLoop]: Abstraction has 24193 states and 32189 transitions. [2020-10-13 09:00:37,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:00:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 24193 states and 32189 transitions. [2020-10-13 09:00:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-13 09:00:37,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:37,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:00:37,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:00:37,801 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:37,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1188132923, now seen corresponding path program 1 times [2020-10-13 09:00:37,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:37,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631171945] [2020-10-13 09:00:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:42,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:42,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-13 09:00:42,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:00:42,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 09:00:42,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:42,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-13 09:00:42,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:00:42,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:43,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:43,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:43,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:00:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:43,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:43,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:43,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:00:43,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 09:00:43,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:00:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-13 09:00:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-13 09:00:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:43,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:00:43,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-13 09:00:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:00:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:00:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:43,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-10-13 09:00:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:43,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:43,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:00:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 171 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 09:00:43,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631171945] [2020-10-13 09:00:43,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:00:43,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:00:43,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069763719] [2020-10-13 09:00:43,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:00:43,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:00:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:00:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:00:43,930 INFO L87 Difference]: Start difference. First operand 24193 states and 32189 transitions. Second operand 7 states. [2020-10-13 09:00:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:00:56,616 INFO L93 Difference]: Finished difference Result 51514 states and 69509 transitions. [2020-10-13 09:00:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:00:56,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-13 09:00:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:00:56,703 INFO L225 Difference]: With dead ends: 51514 [2020-10-13 09:00:56,703 INFO L226 Difference]: Without dead ends: 27327 [2020-10-13 09:00:56,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:00:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27327 states. [2020-10-13 09:00:57,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27327 to 27300. [2020-10-13 09:00:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27300 states. [2020-10-13 09:00:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27300 states to 27300 states and 36150 transitions. [2020-10-13 09:00:57,329 INFO L78 Accepts]: Start accepts. Automaton has 27300 states and 36150 transitions. Word has length 521 [2020-10-13 09:00:57,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:00:57,330 INFO L479 AbstractCegarLoop]: Abstraction has 27300 states and 36150 transitions. [2020-10-13 09:00:57,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:00:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 27300 states and 36150 transitions. [2020-10-13 09:00:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-13 09:00:57,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:00:57,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:00:57,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:00:57,356 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:00:57,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:00:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1432903707, now seen corresponding path program 1 times [2020-10-13 09:00:57,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:00:57,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405360710] [2020-10-13 09:00:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:00:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:57,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:59,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-13 09:00:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:00:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2240 [2020-10-13 09:00:59,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:59,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:00:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:00:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:00:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:00:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:59,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:00:59,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:00:59,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:00:59,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:00:59,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:00:59,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:00:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:00:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:00:59,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:00:59,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:00:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:00:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:00:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:00,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:00,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:01:00,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 09:01:00,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:00,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 09:01:00,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:01:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:00,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:00,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:01:00,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 09:01:00,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:01:00,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:01:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:00,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:01:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:00,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:00,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 09:01:00,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:01:00,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 09:01:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 171 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 09:01:00,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405360710] [2020-10-13 09:01:00,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:00,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:01:00,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13351929] [2020-10-13 09:01:00,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:01:00,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:00,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:01:00,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:01:00,437 INFO L87 Difference]: Start difference. First operand 27300 states and 36150 transitions. Second operand 7 states.