/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:30:41,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:30:41,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:30:41,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:30:41,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:30:41,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:30:41,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:30:41,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:30:41,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:30:41,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:30:41,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:30:41,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:30:41,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:30:41,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:30:41,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:30:41,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:30:41,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:30:41,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:30:41,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:30:41,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:30:41,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:30:41,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:30:41,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:30:41,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:30:41,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:30:41,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:30:41,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:30:41,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:30:41,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:30:41,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:30:41,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:30:41,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:30:41,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:30:41,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:30:41,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:30:41,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:30:41,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:30:41,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:30:41,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:30:41,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:30:41,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:30:41,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:30:41,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:30:41,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:30:41,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:30:41,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:30:41,403 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:30:41,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:30:41,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:30:41,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:30:41,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:30:41,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:30:41,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:30:41,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:30:41,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:30:41,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:30:41,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:30:41,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:30:41,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:30:41,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:30:41,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:30:41,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:30:41,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:30:41,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:30:41,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:30:41,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:30:41,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:30:41,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:30:41,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:30:41,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:30:41,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:30:41,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:30:41,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:30:41,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:30:41,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:30:41,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:30:41,727 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:30:41,728 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18.c [2020-10-13 09:30:41,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf56a1052/72dd53cd35e94c129da903203b20ec9b/FLAGd82d7c9bc [2020-10-13 09:30:42,588 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:30:42,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label18.c [2020-10-13 09:30:42,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf56a1052/72dd53cd35e94c129da903203b20ec9b/FLAGd82d7c9bc [2020-10-13 09:30:42,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf56a1052/72dd53cd35e94c129da903203b20ec9b [2020-10-13 09:30:42,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:30:42,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:30:42,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:30:42,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:30:42,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:30:42,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:42" (1/1) ... [2020-10-13 09:30:42,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7decd891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:42, skipping insertion in model container [2020-10-13 09:30:42,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:30:42" (1/1) ... [2020-10-13 09:30:42,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:30:42,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:30:44,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:30:44,044 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:30:44,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:30:44,513 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:30:44,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44 WrapperNode [2020-10-13 09:30:44,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:30:44,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:30:44,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:30:44,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:30:44,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... [2020-10-13 09:30:44,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... [2020-10-13 09:30:44,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... [2020-10-13 09:30:44,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... [2020-10-13 09:30:44,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... [2020-10-13 09:30:44,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... [2020-10-13 09:30:44,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... [2020-10-13 09:30:44,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:30:44,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:30:44,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:30:44,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:30:44,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:30:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:30:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:30:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:30:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:30:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:30:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:30:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:30:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:30:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:30:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:30:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:30:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:30:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:30:53,708 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:30:53,709 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:30:53,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:53 BoogieIcfgContainer [2020-10-13 09:30:53,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:30:53,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:30:53,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:30:53,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:30:53,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:30:42" (1/3) ... [2020-10-13 09:30:53,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:53, skipping insertion in model container [2020-10-13 09:30:53,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:30:44" (2/3) ... [2020-10-13 09:30:53,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3099ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:30:53, skipping insertion in model container [2020-10-13 09:30:53,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:30:53" (3/3) ... [2020-10-13 09:30:53,728 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label18.c [2020-10-13 09:30:53,739 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:30:53,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:30:53,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:30:53,794 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:30:53,794 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:30:53,794 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:30:53,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:30:53,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:30:53,795 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:30:53,795 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:30:53,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:30:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:30:53,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 09:30:53,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:30:53,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:30:53,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:30:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:30:53,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1318120319, now seen corresponding path program 1 times [2020-10-13 09:30:53,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:30:53,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596421397] [2020-10-13 09:30:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:30:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:54,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:54,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 09:30:54,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-13 09:30:54,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:30:54,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:30:54,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 09:30:54,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:30:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:30:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:30:54,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:30:54,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:30:54,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:30:54,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:30:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 09:30:54,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:30:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:30:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:30:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:30:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:30:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:30:54,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596421397] [2020-10-13 09:30:54,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:30:54,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:30:54,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379924015] [2020-10-13 09:30:54,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:30:54,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:30:54,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:30:54,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:30:54,835 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:31:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:05,390 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-13 09:31:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:05,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-13 09:31:05,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:05,430 INFO L225 Difference]: With dead ends: 1693 [2020-10-13 09:31:05,430 INFO L226 Difference]: Without dead ends: 1011 [2020-10-13 09:31:05,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-13 09:31:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-13 09:31:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-13 09:31:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-13 09:31:05,592 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 61 [2020-10-13 09:31:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:05,593 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-13 09:31:05,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:31:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-13 09:31:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 09:31:05,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:05,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:31:05,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:31:05,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:05,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2001166611, now seen corresponding path program 1 times [2020-10-13 09:31:05,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:05,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953621290] [2020-10-13 09:31:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:05,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:07,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:07,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 09:31:07,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:31:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-13 09:31:07,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:31:07,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:31:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:07,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:07,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:31:07,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:07,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:07,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:31:07,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:31:07,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:07,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:31:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:07,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953621290] [2020-10-13 09:31:07,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:07,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:07,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679243246] [2020-10-13 09:31:07,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:07,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:07,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:07,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:07,689 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 5 states. [2020-10-13 09:31:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:22,652 INFO L93 Difference]: Finished difference Result 2874 states and 4638 transitions. [2020-10-13 09:31:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:31:22,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-10-13 09:31:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:22,670 INFO L225 Difference]: With dead ends: 2874 [2020-10-13 09:31:22,670 INFO L226 Difference]: Without dead ends: 1894 [2020-10-13 09:31:22,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:31:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2020-10-13 09:31:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1882. [2020-10-13 09:31:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2020-10-13 09:31:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2777 transitions. [2020-10-13 09:31:22,767 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2777 transitions. Word has length 130 [2020-10-13 09:31:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:22,771 INFO L479 AbstractCegarLoop]: Abstraction has 1882 states and 2777 transitions. [2020-10-13 09:31:22,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:31:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2777 transitions. [2020-10-13 09:31:22,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 09:31:22,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:22,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:31:22,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:31:22,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:22,792 INFO L82 PathProgramCache]: Analyzing trace with hash -418800343, now seen corresponding path program 1 times [2020-10-13 09:31:22,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:22,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365585970] [2020-10-13 09:31:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:24,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:24,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 09:31:24,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:31:24,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-10-13 09:31:24,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:31:24,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:31:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:31:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:31:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:31:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:24,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:24,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:24,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:31:24,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-13 09:31:24,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:24,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:31:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:31:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:31:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 29 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:24,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365585970] [2020-10-13 09:31:24,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:24,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:31:24,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32864919] [2020-10-13 09:31:24,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:31:24,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:24,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:31:24,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:31:24,996 INFO L87 Difference]: Start difference. First operand 1882 states and 2777 transitions. Second operand 8 states. [2020-10-13 09:31:46,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:31:46,426 INFO L93 Difference]: Finished difference Result 3903 states and 6165 transitions. [2020-10-13 09:31:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 09:31:46,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-10-13 09:31:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:31:46,454 INFO L225 Difference]: With dead ends: 3903 [2020-10-13 09:31:46,455 INFO L226 Difference]: Without dead ends: 2859 [2020-10-13 09:31:46,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:31:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-10-13 09:31:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2792. [2020-10-13 09:31:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2792 states. [2020-10-13 09:31:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4101 transitions. [2020-10-13 09:31:46,582 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4101 transitions. Word has length 135 [2020-10-13 09:31:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:31:46,583 INFO L479 AbstractCegarLoop]: Abstraction has 2792 states and 4101 transitions. [2020-10-13 09:31:46,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:31:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4101 transitions. [2020-10-13 09:31:46,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-13 09:31:46,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:31:46,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:31:46,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:31:46,589 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:31:46,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:31:46,589 INFO L82 PathProgramCache]: Analyzing trace with hash 202831236, now seen corresponding path program 1 times [2020-10-13 09:31:46,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:31:46,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477391174] [2020-10-13 09:31:46,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:31:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:47,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 09:31:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:31:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-13 09:31:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:31:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 09:31:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:31:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:48,128 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-13 09:31:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:31:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:48,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:48,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:31:48,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:48,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:31:48,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:48,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:31:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:48,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:31:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:31:48,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:31:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:31:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:31:48,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:31:48,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 09:31:48,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:31:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:31:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:31:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:31:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:31:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 09:31:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:31:48,461 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:31:48,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477391174] [2020-10-13 09:31:48,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:31:48,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:31:48,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599517981] [2020-10-13 09:31:48,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:31:48,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:31:48,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:31:48,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:31:48,465 INFO L87 Difference]: Start difference. First operand 2792 states and 4101 transitions. Second operand 5 states. [2020-10-13 09:32:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:01,633 INFO L93 Difference]: Finished difference Result 4764 states and 7138 transitions. [2020-10-13 09:32:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:01,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-13 09:32:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:01,657 INFO L225 Difference]: With dead ends: 4764 [2020-10-13 09:32:01,657 INFO L226 Difference]: Without dead ends: 2810 [2020-10-13 09:32:01,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:01,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2020-10-13 09:32:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2792. [2020-10-13 09:32:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2792 states. [2020-10-13 09:32:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4098 transitions. [2020-10-13 09:32:01,757 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4098 transitions. Word has length 145 [2020-10-13 09:32:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:01,759 INFO L479 AbstractCegarLoop]: Abstraction has 2792 states and 4098 transitions. [2020-10-13 09:32:01,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4098 transitions. [2020-10-13 09:32:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 09:32:01,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:01,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:01,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:32:01,763 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1495901741, now seen corresponding path program 1 times [2020-10-13 09:32:01,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:01,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008037029] [2020-10-13 09:32:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:32:02,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:32:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-13 09:32:02,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:32:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:32:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 09:32:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:02,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:02,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:02,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:02,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:32:02,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:32:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:02,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:02,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:32:02,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 09:32:02,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:32:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:32:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:32:02,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008037029] [2020-10-13 09:32:02,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:32:02,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:32:02,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909237325] [2020-10-13 09:32:02,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:32:02,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:32:02,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:32:02,958 INFO L87 Difference]: Start difference. First operand 2792 states and 4098 transitions. Second operand 7 states. [2020-10-13 09:32:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:18,383 INFO L93 Difference]: Finished difference Result 6079 states and 9302 transitions. [2020-10-13 09:32:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:32:18,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-13 09:32:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:18,399 INFO L225 Difference]: With dead ends: 6079 [2020-10-13 09:32:18,399 INFO L226 Difference]: Without dead ends: 3293 [2020-10-13 09:32:18,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:32:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2020-10-13 09:32:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2840. [2020-10-13 09:32:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2020-10-13 09:32:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3915 transitions. [2020-10-13 09:32:18,481 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3915 transitions. Word has length 146 [2020-10-13 09:32:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:18,482 INFO L479 AbstractCegarLoop]: Abstraction has 2840 states and 3915 transitions. [2020-10-13 09:32:18,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:32:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3915 transitions. [2020-10-13 09:32:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 09:32:18,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:18,486 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, 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, 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 09:32:18,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:32:18,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:18,487 INFO L82 PathProgramCache]: Analyzing trace with hash -2127962455, now seen corresponding path program 1 times [2020-10-13 09:32:18,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:18,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834201789] [2020-10-13 09:32:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:18,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:19,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 09:32:23,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:32:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:23,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:23,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:23,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:32:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:23,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:23,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:23,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:23,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:32:23,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 09:32:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:32:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:23,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:24,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:24,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:32:24,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 09:32:24,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:24,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:24,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:32:24,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 09:32:24,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834201789] [2020-10-13 09:32:24,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:24,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:24,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472982418] [2020-10-13 09:32:24,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:24,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:24,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:24,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:24,214 INFO L87 Difference]: Start difference. First operand 2840 states and 3915 transitions. Second operand 5 states. [2020-10-13 09:32:35,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:35,831 INFO L93 Difference]: Finished difference Result 5706 states and 7876 transitions. [2020-10-13 09:32:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:35,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-13 09:32:35,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:35,850 INFO L225 Difference]: With dead ends: 5706 [2020-10-13 09:32:35,850 INFO L226 Difference]: Without dead ends: 2856 [2020-10-13 09:32:35,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-10-13 09:32:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2840. [2020-10-13 09:32:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2020-10-13 09:32:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3911 transitions. [2020-10-13 09:32:35,934 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3911 transitions. Word has length 223 [2020-10-13 09:32:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:35,934 INFO L479 AbstractCegarLoop]: Abstraction has 2840 states and 3911 transitions. [2020-10-13 09:32:35,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:35,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3911 transitions. [2020-10-13 09:32:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-13 09:32:35,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:35,939 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:35,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:32:35,940 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:35,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:35,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1878741214, now seen corresponding path program 1 times [2020-10-13 09:32:35,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:35,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506392128] [2020-10-13 09:32:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:41,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:41,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-13 09:32:41,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:32:41,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:32:41,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:32:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-13 09:32:41,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:32:41,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:32:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:41,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:32:41,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 09:32:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:41,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:41,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:32:41,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:32:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:41,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:41,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:32:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:32:41,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:32:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:32:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:41,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:32:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:41,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:32:41,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:32:41,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:32:41,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 09:32:41,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:32:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:32:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:32:41,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:32:41,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:32:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 09:32:41,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506392128] [2020-10-13 09:32:41,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:32:41,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:32:41,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513598012] [2020-10-13 09:32:41,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:32:41,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:32:41,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:32:41,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:32:41,496 INFO L87 Difference]: Start difference. First operand 2840 states and 3911 transitions. Second operand 5 states. [2020-10-13 09:32:58,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:32:58,050 INFO L93 Difference]: Finished difference Result 6125 states and 8681 transitions. [2020-10-13 09:32:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:32:58,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-10-13 09:32:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:32:58,072 INFO L225 Difference]: With dead ends: 6125 [2020-10-13 09:32:58,072 INFO L226 Difference]: Without dead ends: 3291 [2020-10-13 09:32:58,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:32:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-10-13 09:32:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 3275. [2020-10-13 09:32:58,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-10-13 09:32:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4555 transitions. [2020-10-13 09:32:58,175 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4555 transitions. Word has length 234 [2020-10-13 09:32:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:32:58,176 INFO L479 AbstractCegarLoop]: Abstraction has 3275 states and 4555 transitions. [2020-10-13 09:32:58,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:32:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4555 transitions. [2020-10-13 09:32:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-13 09:32:58,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:32:58,181 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:32:58,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:32:58,181 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:32:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:32:58,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1491230786, now seen corresponding path program 1 times [2020-10-13 09:32:58,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:32:58,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071595209] [2020-10-13 09:32:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:32:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:32:58,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:58,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:32:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 09:33:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:33:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3236 [2020-10-13 09:33:01,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 09:33:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:33:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:01,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:01,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:01,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:33:01,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:01,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:01,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:01,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:33:01,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:01,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:33:01,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:01,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:01,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:33:01,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:33:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:01,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:01,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:33:01,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 09:33:01,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:33:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:33:02,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071595209] [2020-10-13 09:33:02,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:02,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:02,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943660042] [2020-10-13 09:33:02,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:02,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:02,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:02,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:02,091 INFO L87 Difference]: Start difference. First operand 3275 states and 4555 transitions. Second operand 5 states. [2020-10-13 09:33:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:14,286 INFO L93 Difference]: Finished difference Result 6584 states and 9168 transitions. [2020-10-13 09:33:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:14,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-10-13 09:33:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:14,301 INFO L225 Difference]: With dead ends: 6584 [2020-10-13 09:33:14,302 INFO L226 Difference]: Without dead ends: 3291 [2020-10-13 09:33:14,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-10-13 09:33:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 3275. [2020-10-13 09:33:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-10-13 09:33:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4550 transitions. [2020-10-13 09:33:14,385 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4550 transitions. Word has length 236 [2020-10-13 09:33:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:14,386 INFO L479 AbstractCegarLoop]: Abstraction has 3275 states and 4550 transitions. [2020-10-13 09:33:14,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4550 transitions. [2020-10-13 09:33:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 09:33:14,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:14,392 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:14,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:33:14,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:14,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:14,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1228821402, now seen corresponding path program 1 times [2020-10-13 09:33:14,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:14,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059501197] [2020-10-13 09:33:14,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:14,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:16,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:16,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-13 09:33:16,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:33:16,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2104 [2020-10-13 09:33:16,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 236 [2020-10-13 09:33:16,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:33:16,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:16,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:16,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:16,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:16,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:33:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:16,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:33:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:33:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:17,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:17,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 09:33:17,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:17,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-13 09:33:17,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 09:33:17,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:33:17,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059501197] [2020-10-13 09:33:17,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:17,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:17,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142636715] [2020-10-13 09:33:17,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:17,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:17,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:17,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:17,206 INFO L87 Difference]: Start difference. First operand 3275 states and 4550 transitions. Second operand 5 states. [2020-10-13 09:33:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:32,770 INFO L93 Difference]: Finished difference Result 6587 states and 9161 transitions. [2020-10-13 09:33:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:32,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-13 09:33:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:32,790 INFO L225 Difference]: With dead ends: 6587 [2020-10-13 09:33:32,790 INFO L226 Difference]: Without dead ends: 3291 [2020-10-13 09:33:32,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-10-13 09:33:32,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 3275. [2020-10-13 09:33:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-10-13 09:33:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4545 transitions. [2020-10-13 09:33:32,906 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4545 transitions. Word has length 285 [2020-10-13 09:33:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:32,907 INFO L479 AbstractCegarLoop]: Abstraction has 3275 states and 4545 transitions. [2020-10-13 09:33:32,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4545 transitions. [2020-10-13 09:33:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 09:33:32,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:32,914 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:32,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:33:32,914 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:32,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1035629474, now seen corresponding path program 1 times [2020-10-13 09:33:32,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:32,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433081007] [2020-10-13 09:33:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:33,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:36,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:36,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-13 09:33:36,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:33:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3494 [2020-10-13 09:33:36,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-13 09:33:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 09:33:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:36,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:36,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:36,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:36,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:36,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:36,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:36,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:36,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:36,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:36,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:33:36,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:33:36,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:36,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:33:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 09:33:36,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 09:33:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-13 09:33:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:37,072 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:33:37,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433081007] [2020-10-13 09:33:37,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:37,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:37,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354708447] [2020-10-13 09:33:37,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:37,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:37,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:37,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:37,074 INFO L87 Difference]: Start difference. First operand 3275 states and 4545 transitions. Second operand 5 states. [2020-10-13 09:33:51,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:33:51,802 INFO L93 Difference]: Finished difference Result 6586 states and 9150 transitions. [2020-10-13 09:33:51,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:33:51,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2020-10-13 09:33:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:33:51,816 INFO L225 Difference]: With dead ends: 6586 [2020-10-13 09:33:51,816 INFO L226 Difference]: Without dead ends: 3291 [2020-10-13 09:33:51,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:33:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-10-13 09:33:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 3275. [2020-10-13 09:33:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-10-13 09:33:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4540 transitions. [2020-10-13 09:33:51,898 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4540 transitions. Word has length 289 [2020-10-13 09:33:51,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:33:51,898 INFO L479 AbstractCegarLoop]: Abstraction has 3275 states and 4540 transitions. [2020-10-13 09:33:51,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:33:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4540 transitions. [2020-10-13 09:33:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-13 09:33:51,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:33:51,906 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:33:51,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:33:51,906 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:33:51,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:33:51,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1151430291, now seen corresponding path program 1 times [2020-10-13 09:33:51,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:33:51,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787805541] [2020-10-13 09:33:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:33:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:56,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:56,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 09:33:56,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:33:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:33:56,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:33:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-13 09:33:56,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 09:33:56,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:33:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:33:57,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:33:57,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:33:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:57,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:33:57,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:33:57,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:33:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:57,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:33:57,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:57,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:33:57,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:33:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:57,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:33:57,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 09:33:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:33:57,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:33:57,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:33:57,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:33:57,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:33:57,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 09:33:57,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:33:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:33:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:33:57,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:33:57,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:33:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 165 proven. 3 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-13 09:33:57,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787805541] [2020-10-13 09:33:57,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:33:57,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:33:57,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393780242] [2020-10-13 09:33:57,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:33:57,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:33:57,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:33:57,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:33:57,320 INFO L87 Difference]: Start difference. First operand 3275 states and 4540 transitions. Second operand 5 states. [2020-10-13 09:34:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:16,047 INFO L93 Difference]: Finished difference Result 9690 states and 13662 transitions. [2020-10-13 09:34:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:16,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-13 09:34:16,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:16,071 INFO L225 Difference]: With dead ends: 9690 [2020-10-13 09:34:16,072 INFO L226 Difference]: Without dead ends: 5524 [2020-10-13 09:34:16,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2020-10-13 09:34:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5074. [2020-10-13 09:34:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5074 states. [2020-10-13 09:34:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6580 transitions. [2020-10-13 09:34:16,183 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6580 transitions. Word has length 302 [2020-10-13 09:34:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:16,184 INFO L479 AbstractCegarLoop]: Abstraction has 5074 states and 6580 transitions. [2020-10-13 09:34:16,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6580 transitions. [2020-10-13 09:34:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-13 09:34:16,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:16,191 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:16,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:34:16,192 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:16,192 INFO L82 PathProgramCache]: Analyzing trace with hash 847284475, now seen corresponding path program 1 times [2020-10-13 09:34:16,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:16,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332940389] [2020-10-13 09:34:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:18,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:18,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-13 09:34:18,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:34:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-13 09:34:18,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:34:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-13 09:34:18,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:34:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:18,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:18,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:18,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:18,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:18,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:18,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:34:18,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:18,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:18,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:18,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:34:18,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 09:34:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:34:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:18,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:18,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 09:34:18,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 09:34:18,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:18,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 09:34:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:34:18,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332940389] [2020-10-13 09:34:18,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:18,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:34:18,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977176753] [2020-10-13 09:34:18,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:34:18,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:18,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:34:18,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:34:18,711 INFO L87 Difference]: Start difference. First operand 5074 states and 6580 transitions. Second operand 5 states. [2020-10-13 09:34:30,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:34:30,450 INFO L93 Difference]: Finished difference Result 10169 states and 13197 transitions. [2020-10-13 09:34:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:34:30,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2020-10-13 09:34:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:34:30,471 INFO L225 Difference]: With dead ends: 10169 [2020-10-13 09:34:30,472 INFO L226 Difference]: Without dead ends: 5089 [2020-10-13 09:34:30,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:34:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5089 states. [2020-10-13 09:34:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5089 to 5074. [2020-10-13 09:34:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5074 states. [2020-10-13 09:34:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 6575 transitions. [2020-10-13 09:34:30,578 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 6575 transitions. Word has length 307 [2020-10-13 09:34:30,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:34:30,579 INFO L479 AbstractCegarLoop]: Abstraction has 5074 states and 6575 transitions. [2020-10-13 09:34:30,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:34:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 6575 transitions. [2020-10-13 09:34:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 09:34:30,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:30,596 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:34:30,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:34:30,596 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash 800572366, now seen corresponding path program 1 times [2020-10-13 09:34:30,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:30,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245312063] [2020-10-13 09:34:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:31,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:32,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:32,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 09:34:32,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:34:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2063 [2020-10-13 09:34:32,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:34:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 277 [2020-10-13 09:34:32,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:34:32,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:33,071 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2020-10-13 09:34:33,279 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2020-10-13 09:34:33,509 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2020-10-13 09:34:33,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:33,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:33,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:33,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:33,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:33,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:34:33,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:33,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:33,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:33,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:34:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:33,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:33,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:33,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 09:34:33,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:34:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:34:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:33,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:34:33,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:33,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 09:34:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:33,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:33,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-13 09:34:33,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-13 09:34:33,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:33,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 09:34:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-13 09:34:34,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245312063] [2020-10-13 09:34:34,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:34:34,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:34:34,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708853949] [2020-10-13 09:34:34,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:34:34,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:34,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:34:34,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:34:34,026 INFO L87 Difference]: Start difference. First operand 5074 states and 6575 transitions. Second operand 8 states.