/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=BIGGEST --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/Problem11_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:06:59,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:06:59,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:06:59,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:06:59,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:06:59,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:06:59,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:06:59,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:06:59,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:06:59,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:06:59,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:06:59,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:06:59,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:06:59,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:06:59,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:06:59,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:06:59,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:06:59,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:06:59,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:06:59,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:06:59,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:06:59,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:06:59,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:06:59,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:06:59,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:06:59,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:06:59,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:06:59,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:06:59,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:06:59,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:06:59,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:06:59,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:06:59,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:06:59,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:06:59,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:06:59,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:06:59,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:06:59,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:06:59,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:06:59,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:06:59,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:06:59,351 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 [2020-10-12 13:06:59,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:06:59,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:06:59,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:06:59,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:06:59,402 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:06:59,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:06:59,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:06:59,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:06:59,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:06:59,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:06:59,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:06:59,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:06:59,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:06:59,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:06:59,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:06:59,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:06:59,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:06:59,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:06:59,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:06:59,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:06:59,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:06:59,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:06:59,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:06:59,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:06:59,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:06:59,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:06:59,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:06:59,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:06:59,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:06:59,411 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:06:59,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:06:59,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:06:59,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:06:59,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:06:59,768 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:06:59,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02.c [2020-10-12 13:06:59,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c8103609/8de0b52b50cd4288825d658b6bc95a60/FLAGa9be196c8 [2020-10-12 13:07:00,446 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:07:00,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label02.c [2020-10-12 13:07:00,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c8103609/8de0b52b50cd4288825d658b6bc95a60/FLAGa9be196c8 [2020-10-12 13:07:00,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c8103609/8de0b52b50cd4288825d658b6bc95a60 [2020-10-12 13:07:00,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:07:00,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:07:00,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:07:00,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:07:00,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:07:00,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:07:00" (1/1) ... [2020-10-12 13:07:00,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:00, skipping insertion in model container [2020-10-12 13:07:00,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:07:00" (1/1) ... [2020-10-12 13:07:00,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:07:00,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:07:01,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:07:01,355 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:07:01,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:07:01,710 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:07:01,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01 WrapperNode [2020-10-12 13:07:01,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:07:01,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:07:01,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:07:01,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:07:01,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (1/1) ... [2020-10-12 13:07:01,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (1/1) ... [2020-10-12 13:07:01,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (1/1) ... [2020-10-12 13:07:01,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (1/1) ... [2020-10-12 13:07:01,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (1/1) ... [2020-10-12 13:07:01,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (1/1) ... [2020-10-12 13:07:01,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (1/1) ... [2020-10-12 13:07:01,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:07:01,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:07:01,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:07:01,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:07:01,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (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 [2020-10-12 13:07:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:07:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:07:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:07:01,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:07:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:07:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:07:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:07:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:07:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:07:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:07:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:07:03,797 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:07:03,797 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:07:03,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:07:03 BoogieIcfgContainer [2020-10-12 13:07:03,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:07:03,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:07:03,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:07:03,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:07:03,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:07:00" (1/3) ... [2020-10-12 13:07:03,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521443ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:07:03, skipping insertion in model container [2020-10-12 13:07:03,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:07:01" (2/3) ... [2020-10-12 13:07:03,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521443ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:07:03, skipping insertion in model container [2020-10-12 13:07:03,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:07:03" (3/3) ... [2020-10-12 13:07:03,814 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label02.c [2020-10-12 13:07:03,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:07:03,833 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:07:03,847 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:07:03,873 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:07:03,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:07:03,873 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:07:03,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:07:03,874 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:07:03,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:07:03,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:07:03,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:07:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-12 13:07:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 13:07:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:03,910 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] [2020-10-12 13:07:03,911 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:03,917 INFO L82 PathProgramCache]: Analyzing trace with hash -130901253, now seen corresponding path program 1 times [2020-10-12 13:07:03,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:03,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595565131] [2020-10-12 13:07:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:04,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:04,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 13:07:04,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-12 13:07:04,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 13:07:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:07:04,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:04,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:04,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:07:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:04,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595565131] [2020-10-12 13:07:04,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:04,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:07:04,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395051132] [2020-10-12 13:07:04,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:07:04,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:07:04,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:07:04,904 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-12 13:07:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:07,423 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-12 13:07:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:07,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-12 13:07:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:07,444 INFO L225 Difference]: With dead ends: 788 [2020-10-12 13:07:07,444 INFO L226 Difference]: Without dead ends: 431 [2020-10-12 13:07:07,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-12 13:07:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-12 13:07:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-12 13:07:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-12 13:07:07,539 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 60 [2020-10-12 13:07:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:07,539 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-12 13:07:07,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:07:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-12 13:07:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-12 13:07:07,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:07,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:07,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:07:07,550 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:07,551 INFO L82 PathProgramCache]: Analyzing trace with hash 407759866, now seen corresponding path program 1 times [2020-10-12 13:07:07,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:07,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66200837] [2020-10-12 13:07:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:07,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:09,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:09,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 13:07:09,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1668 [2020-10-12 13:07:09,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 13:07:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:09,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:09,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:07:09,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:09,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:09,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:09,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 13:07:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 13:07:09,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 13:07:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:09,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66200837] [2020-10-12 13:07:09,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:09,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:07:09,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118720314] [2020-10-12 13:07:09,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:09,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:09,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:09,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:09,666 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 7 states. [2020-10-12 13:07:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:12,560 INFO L93 Difference]: Finished difference Result 1310 states and 1983 transitions. [2020-10-12 13:07:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:07:12,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-12 13:07:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:12,580 INFO L225 Difference]: With dead ends: 1310 [2020-10-12 13:07:12,580 INFO L226 Difference]: Without dead ends: 891 [2020-10-12 13:07:12,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:07:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-10-12 13:07:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 822. [2020-10-12 13:07:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-12 13:07:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1102 transitions. [2020-10-12 13:07:12,695 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1102 transitions. Word has length 132 [2020-10-12 13:07:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:12,699 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1102 transitions. [2020-10-12 13:07:12,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1102 transitions. [2020-10-12 13:07:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 13:07:12,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:12,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:12,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:07:12,711 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:12,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:12,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2003613546, now seen corresponding path program 1 times [2020-10-12 13:07:12,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:12,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893057869] [2020-10-12 13:07:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:12,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:13,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:14,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:14,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:07:14,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:14,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1464 [2020-10-12 13:07:14,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:14,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:07:14,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:14,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:14,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:14,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:14,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:07:14,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:14,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:14,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:14,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:07:14,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:14,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-12 13:07:14,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:07:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:14,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893057869] [2020-10-12 13:07:14,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:07:14,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:07:14,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650265804] [2020-10-12 13:07:14,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:14,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:14,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:14,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:14,545 INFO L87 Difference]: Start difference. First operand 822 states and 1102 transitions. Second operand 7 states. [2020-10-12 13:07:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:17,133 INFO L93 Difference]: Finished difference Result 2089 states and 2851 transitions. [2020-10-12 13:07:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:07:17,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-12 13:07:17,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:17,144 INFO L225 Difference]: With dead ends: 2089 [2020-10-12 13:07:17,144 INFO L226 Difference]: Without dead ends: 1273 [2020-10-12 13:07:17,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:07:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-10-12 13:07:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1216. [2020-10-12 13:07:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-12 13:07:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1535 transitions. [2020-10-12 13:07:17,207 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1535 transitions. Word has length 140 [2020-10-12 13:07:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:17,210 INFO L479 AbstractCegarLoop]: Abstraction has 1216 states and 1535 transitions. [2020-10-12 13:07:17,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1535 transitions. [2020-10-12 13:07:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-12 13:07:17,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:17,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:17,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:07:17,215 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:17,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:17,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1420862588, now seen corresponding path program 1 times [2020-10-12 13:07:17,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:17,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596261216] [2020-10-12 13:07:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:17,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:17,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-12 13:07:17,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-12 13:07:17,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:07:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 13:07:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:17,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:17,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:17,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:07:17,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:17,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:17,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:17,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:17,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:07:17,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:17,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 13:07:17,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:17,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:17,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:07:17,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:07:17,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596261216] [2020-10-12 13:07:17,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:17,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:17,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849386659] [2020-10-12 13:07:17,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:17,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:17,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:17,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:17,969 INFO L87 Difference]: Start difference. First operand 1216 states and 1535 transitions. Second operand 5 states. [2020-10-12 13:07:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:20,443 INFO L93 Difference]: Finished difference Result 2855 states and 3788 transitions. [2020-10-12 13:07:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:20,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-12 13:07:20,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:20,464 INFO L225 Difference]: With dead ends: 2855 [2020-10-12 13:07:20,464 INFO L226 Difference]: Without dead ends: 2023 [2020-10-12 13:07:20,467 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 [2020-10-12 13:07:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2020-10-12 13:07:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2017. [2020-10-12 13:07:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2017 states. [2020-10-12 13:07:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 2569 transitions. [2020-10-12 13:07:20,548 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 2569 transitions. Word has length 191 [2020-10-12 13:07:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:20,552 INFO L479 AbstractCegarLoop]: Abstraction has 2017 states and 2569 transitions. [2020-10-12 13:07:20,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 2569 transitions. [2020-10-12 13:07:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-12 13:07:20,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:20,560 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, 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] [2020-10-12 13:07:20,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:07:20,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1463748652, now seen corresponding path program 1 times [2020-10-12 13:07:20,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:20,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203975231] [2020-10-12 13:07:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:22,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:22,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-12 13:07:22,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:22,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2181 [2020-10-12 13:07:22,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:22,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:07:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:07:22,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-12 13:07:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:22,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:22,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:07:22,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:07:22,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:22,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:22,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:23,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:23,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:23,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:23,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 13:07:23,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:23,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:07:23,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:07:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:23,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:23,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:07:23,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 13:07:23,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:07:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:07:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 92 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:07:24,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203975231] [2020-10-12 13:07:24,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:24,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:07:24,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533607688] [2020-10-12 13:07:24,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:07:24,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:24,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:07:24,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:07:24,133 INFO L87 Difference]: Start difference. First operand 2017 states and 2569 transitions. Second operand 9 states. [2020-10-12 13:07:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:27,820 INFO L93 Difference]: Finished difference Result 3033 states and 4592 transitions. [2020-10-12 13:07:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 13:07:27,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 249 [2020-10-12 13:07:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:27,839 INFO L225 Difference]: With dead ends: 3033 [2020-10-12 13:07:27,839 INFO L226 Difference]: Without dead ends: 2168 [2020-10-12 13:07:27,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:07:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2020-10-12 13:07:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2030. [2020-10-12 13:07:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2020-10-12 13:07:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2586 transitions. [2020-10-12 13:07:27,941 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2586 transitions. Word has length 249 [2020-10-12 13:07:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:27,941 INFO L479 AbstractCegarLoop]: Abstraction has 2030 states and 2586 transitions. [2020-10-12 13:07:27,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:07:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2586 transitions. [2020-10-12 13:07:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 13:07:27,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:27,947 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:27,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:07:27,947 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:27,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:27,948 INFO L82 PathProgramCache]: Analyzing trace with hash 160593475, now seen corresponding path program 1 times [2020-10-12 13:07:27,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:27,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514056086] [2020-10-12 13:07:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:30,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:30,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-12 13:07:30,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:07:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2410 [2020-10-12 13:07:30,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:07:30,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:07:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 13:07:30,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:30,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:30,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:30,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:30,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:30,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 13:07:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:07:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:07:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:30,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:30,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:30,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 13:07:30,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 13:07:30,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:07:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 128 proven. 53 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:07:31,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514056086] [2020-10-12 13:07:31,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:31,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:07:31,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653904402] [2020-10-12 13:07:31,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:07:31,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:31,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:07:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:07:31,089 INFO L87 Difference]: Start difference. First operand 2030 states and 2586 transitions. Second operand 6 states. [2020-10-12 13:07:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:33,483 INFO L93 Difference]: Finished difference Result 4503 states and 5955 transitions. [2020-10-12 13:07:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:07:33,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 256 [2020-10-12 13:07:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:33,500 INFO L225 Difference]: With dead ends: 4503 [2020-10-12 13:07:33,500 INFO L226 Difference]: Without dead ends: 2857 [2020-10-12 13:07:33,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:07:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-10-12 13:07:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2820. [2020-10-12 13:07:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2820 states. [2020-10-12 13:07:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3610 transitions. [2020-10-12 13:07:33,579 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3610 transitions. Word has length 256 [2020-10-12 13:07:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:33,580 INFO L479 AbstractCegarLoop]: Abstraction has 2820 states and 3610 transitions. [2020-10-12 13:07:33,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:07:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3610 transitions. [2020-10-12 13:07:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 13:07:33,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:33,586 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:07:33,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:07:33,586 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:33,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1218239465, now seen corresponding path program 1 times [2020-10-12 13:07:33,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:33,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438007465] [2020-10-12 13:07:33,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:34,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:34,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-12 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-12 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:34,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-12 13:07:34,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:07:34,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:34,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:34,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:34,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:34,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:34,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:07:34,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:34,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:34,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:34,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:34,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:34,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:34,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:07:34,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 13:07:34,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:34,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:34,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:07:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:34,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:34,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:34,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:07:34,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:34,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 13:07:34,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:34,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:34,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:07:34,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-12 13:07:35,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438007465] [2020-10-12 13:07:35,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:35,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:07:35,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089432325] [2020-10-12 13:07:35,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:07:35,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:07:35,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:07:35,078 INFO L87 Difference]: Start difference. First operand 2820 states and 3610 transitions. Second operand 6 states. [2020-10-12 13:07:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:38,105 INFO L93 Difference]: Finished difference Result 6840 states and 9341 transitions. [2020-10-12 13:07:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:07:38,110 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 262 [2020-10-12 13:07:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:38,134 INFO L225 Difference]: With dead ends: 6840 [2020-10-12 13:07:38,134 INFO L226 Difference]: Without dead ends: 4406 [2020-10-12 13:07:38,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:07:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2020-10-12 13:07:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4389. [2020-10-12 13:07:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2020-10-12 13:07:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 5747 transitions. [2020-10-12 13:07:38,255 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 5747 transitions. Word has length 262 [2020-10-12 13:07:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:38,256 INFO L479 AbstractCegarLoop]: Abstraction has 4389 states and 5747 transitions. [2020-10-12 13:07:38,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:07:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 5747 transitions. [2020-10-12 13:07:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-12 13:07:38,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:38,265 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:07:38,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:07:38,265 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:38,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1396335315, now seen corresponding path program 1 times [2020-10-12 13:07:38,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:38,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121774251] [2020-10-12 13:07:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:38,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:40,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:40,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-12 13:07:40,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-12 13:07:40,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-12 13:07:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:07:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:40,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:40,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:40,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:40,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:40,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:40,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:40,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:40,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:40,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:07:40,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 13:07:40,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:40,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:07:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:40,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:40,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 13:07:40,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:07:40,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:40,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:40,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:40,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:07:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 13:07:40,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121774251] [2020-10-12 13:07:40,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:40,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:40,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665708316] [2020-10-12 13:07:40,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:40,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:40,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:40,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:40,742 INFO L87 Difference]: Start difference. First operand 4389 states and 5747 transitions. Second operand 5 states. [2020-10-12 13:07:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:43,238 INFO L93 Difference]: Finished difference Result 10364 states and 14161 transitions. [2020-10-12 13:07:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:43,239 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 287 [2020-10-12 13:07:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:43,267 INFO L225 Difference]: With dead ends: 10364 [2020-10-12 13:07:43,268 INFO L226 Difference]: Without dead ends: 6361 [2020-10-12 13:07:43,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:07:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2020-10-12 13:07:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 6323. [2020-10-12 13:07:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6323 states. [2020-10-12 13:07:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6323 states to 6323 states and 8322 transitions. [2020-10-12 13:07:43,475 INFO L78 Accepts]: Start accepts. Automaton has 6323 states and 8322 transitions. Word has length 287 [2020-10-12 13:07:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:43,476 INFO L479 AbstractCegarLoop]: Abstraction has 6323 states and 8322 transitions. [2020-10-12 13:07:43,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6323 states and 8322 transitions. [2020-10-12 13:07:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-12 13:07:43,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:43,488 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:43,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:07:43,489 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:43,489 INFO L82 PathProgramCache]: Analyzing trace with hash 112309364, now seen corresponding path program 1 times [2020-10-12 13:07:43,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:43,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879993575] [2020-10-12 13:07:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:44,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:45,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:45,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-12 13:07:45,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1795 [2020-10-12 13:07:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-12 13:07:45,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:07:45,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:45,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:45,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:45,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:45,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:07:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:45,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:07:45,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 13:07:45,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:45,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:45,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:45,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:07:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:45,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:45,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 13:07:45,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:45,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 13:07:45,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 13:07:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-12 13:07:45,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879993575] [2020-10-12 13:07:45,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:45,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:45,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335125300] [2020-10-12 13:07:45,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:45,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:45,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:45,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:45,896 INFO L87 Difference]: Start difference. First operand 6323 states and 8322 transitions. Second operand 5 states. [2020-10-12 13:07:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:48,417 INFO L93 Difference]: Finished difference Result 13823 states and 18779 transitions. [2020-10-12 13:07:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:48,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 288 [2020-10-12 13:07:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:48,464 INFO L225 Difference]: With dead ends: 13823 [2020-10-12 13:07:48,464 INFO L226 Difference]: Without dead ends: 7694 [2020-10-12 13:07:48,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:07:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7694 states. [2020-10-12 13:07:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7694 to 7667. [2020-10-12 13:07:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7667 states. [2020-10-12 13:07:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7667 states to 7667 states and 10154 transitions. [2020-10-12 13:07:48,662 INFO L78 Accepts]: Start accepts. Automaton has 7667 states and 10154 transitions. Word has length 288 [2020-10-12 13:07:48,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:48,663 INFO L479 AbstractCegarLoop]: Abstraction has 7667 states and 10154 transitions. [2020-10-12 13:07:48,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:48,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7667 states and 10154 transitions. [2020-10-12 13:07:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 13:07:48,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:48,674 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:07:48,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:07:48,675 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:48,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:48,675 INFO L82 PathProgramCache]: Analyzing trace with hash 525201488, now seen corresponding path program 1 times [2020-10-12 13:07:48,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:48,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207825719] [2020-10-12 13:07:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:49,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 242 [2020-10-12 13:07:49,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 13:07:49,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:49,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:49,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:49,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:49,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:49,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:49,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:49,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:49,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:49,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:07:49,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:07:49,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:49,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:07:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:49,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 13:07:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 13:07:49,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:07:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 13:07:49,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207825719] [2020-10-12 13:07:49,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:49,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:07:49,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771368661] [2020-10-12 13:07:49,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:07:49,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:49,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:07:49,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:07:49,990 INFO L87 Difference]: Start difference. First operand 7667 states and 10154 transitions. Second operand 5 states. [2020-10-12 13:07:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:52,567 INFO L93 Difference]: Finished difference Result 16505 states and 22458 transitions. [2020-10-12 13:07:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:07:52,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-10-12 13:07:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:52,601 INFO L225 Difference]: With dead ends: 16505 [2020-10-12 13:07:52,601 INFO L226 Difference]: Without dead ends: 9224 [2020-10-12 13:07:52,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:07:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9224 states. [2020-10-12 13:07:52,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9224 to 9191. [2020-10-12 13:07:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9191 states. [2020-10-12 13:07:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 12110 transitions. [2020-10-12 13:07:52,860 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 12110 transitions. Word has length 290 [2020-10-12 13:07:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:52,861 INFO L479 AbstractCegarLoop]: Abstraction has 9191 states and 12110 transitions. [2020-10-12 13:07:52,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:07:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 12110 transitions. [2020-10-12 13:07:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 13:07:52,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:52,879 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:52,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:07:52,880 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1542958884, now seen corresponding path program 1 times [2020-10-12 13:07:52,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:52,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162308379] [2020-10-12 13:07:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:53,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:53,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 13:07:53,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:53,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-12 13:07:53,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:07:53,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:07:53,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:07:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:53,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:53,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:53,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:53,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:53,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:53,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:53,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:07:53,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:53,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 13:07:53,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:53,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:07:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:53,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:07:53,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:07:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:54,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:54,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:07:54,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:54,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 13:07:54,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:07:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:07:54,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:07:54,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162308379] [2020-10-12 13:07:54,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:07:54,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:07:54,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327492218] [2020-10-12 13:07:54,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:07:54,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:07:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:07:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:07:54,143 INFO L87 Difference]: Start difference. First operand 9191 states and 12110 transitions. Second operand 7 states. [2020-10-12 13:07:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:07:56,961 INFO L93 Difference]: Finished difference Result 17719 states and 23657 transitions. [2020-10-12 13:07:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:07:56,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-12 13:07:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:07:56,990 INFO L225 Difference]: With dead ends: 17719 [2020-10-12 13:07:56,991 INFO L226 Difference]: Without dead ends: 8914 [2020-10-12 13:07:57,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:07:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8914 states. [2020-10-12 13:07:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8914 to 8687. [2020-10-12 13:07:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2020-10-12 13:07:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 11104 transitions. [2020-10-12 13:07:57,198 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 11104 transitions. Word has length 295 [2020-10-12 13:07:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:07:57,199 INFO L479 AbstractCegarLoop]: Abstraction has 8687 states and 11104 transitions. [2020-10-12 13:07:57,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:07:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 11104 transitions. [2020-10-12 13:07:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-12 13:07:57,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:07:57,217 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:07:57,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:07:57,218 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:07:57,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:07:57,218 INFO L82 PathProgramCache]: Analyzing trace with hash -503942204, now seen corresponding path program 1 times [2020-10-12 13:07:57,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:07:57,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435565667] [2020-10-12 13:07:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:07:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:59,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-12 13:07:59,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:07:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-12 13:07:59,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:07:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-12 13:07:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 13:07:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:59,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:07:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:59,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:59,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:07:59,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:07:59,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:59,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:59,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:59,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:07:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:07:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:07:59,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:07:59,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:07:59,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:07:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:07:59,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:07:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:07:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:07:59,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:07:59,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:07:59,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:07:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 13:08:00,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:00,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 13:08:00,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 13:08:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-12 13:08:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:00,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:00,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:08:00,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:08:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-12 13:08:01,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435565667] [2020-10-12 13:08:01,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:01,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:08:01,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544017581] [2020-10-12 13:08:01,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:08:01,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:01,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:08:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:08:01,190 INFO L87 Difference]: Start difference. First operand 8687 states and 11104 transitions. Second operand 6 states. [2020-10-12 13:08:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:03,382 INFO L93 Difference]: Finished difference Result 15493 states and 20100 transitions. [2020-10-12 13:08:03,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:08:03,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 364 [2020-10-12 13:08:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:03,412 INFO L225 Difference]: With dead ends: 15493 [2020-10-12 13:08:03,412 INFO L226 Difference]: Without dead ends: 8736 [2020-10-12 13:08:03,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:08:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8736 states. [2020-10-12 13:08:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8736 to 8687. [2020-10-12 13:08:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8687 states. [2020-10-12 13:08:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 11096 transitions. [2020-10-12 13:08:03,602 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 11096 transitions. Word has length 364 [2020-10-12 13:08:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:03,603 INFO L479 AbstractCegarLoop]: Abstraction has 8687 states and 11096 transitions. [2020-10-12 13:08:03,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:08:03,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 11096 transitions. [2020-10-12 13:08:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-10-12 13:08:03,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:03,623 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:03,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 13:08:03,623 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2082737020, now seen corresponding path program 1 times [2020-10-12 13:08:03,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:03,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585013226] [2020-10-12 13:08:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:03,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:04,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-12 13:08:07,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3709 [2020-10-12 13:08:07,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:08:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-12 13:08:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 13:08:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:07,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:08:07,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:07,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:07,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:07,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:07,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 13:08:07,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:07,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:08:07,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 13:08:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 13:08:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:07,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-12 13:08:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:08,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:08:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:08,362 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-12 13:08:08,556 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-12 13:08:08,729 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-12 13:08:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 13:08:09,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585013226] [2020-10-12 13:08:09,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:09,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:08:09,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737017269] [2020-10-12 13:08:09,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:08:09,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:08:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:08:09,412 INFO L87 Difference]: Start difference. First operand 8687 states and 11096 transitions. Second operand 10 states. [2020-10-12 13:08:09,600 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-12 13:08:09,795 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-12 13:08:10,075 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-12 13:08:10,833 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 13:08:11,805 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-10-12 13:08:12,140 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-10-12 13:08:12,691 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-10-12 13:08:13,568 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 13:08:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:14,322 INFO L93 Difference]: Finished difference Result 16192 states and 21166 transitions. [2020-10-12 13:08:14,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 13:08:14,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 368 [2020-10-12 13:08:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:14,353 INFO L225 Difference]: With dead ends: 16192 [2020-10-12 13:08:14,354 INFO L226 Difference]: Without dead ends: 9273 [2020-10-12 13:08:14,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-10-12 13:08:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2020-10-12 13:08:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 8149. [2020-10-12 13:08:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8149 states. [2020-10-12 13:08:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8149 states to 8149 states and 10396 transitions. [2020-10-12 13:08:14,664 INFO L78 Accepts]: Start accepts. Automaton has 8149 states and 10396 transitions. Word has length 368 [2020-10-12 13:08:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:14,665 INFO L479 AbstractCegarLoop]: Abstraction has 8149 states and 10396 transitions. [2020-10-12 13:08:14,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:08:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8149 states and 10396 transitions. [2020-10-12 13:08:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-12 13:08:14,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:14,687 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:08:14,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 13:08:14,687 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:14,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1340545613, now seen corresponding path program 1 times [2020-10-12 13:08:14,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:14,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872382431] [2020-10-12 13:08:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-12 13:08:16,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:16,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1662 [2020-10-12 13:08:16,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 321 [2020-10-12 13:08:16,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 13:08:16,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:16,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:16,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:16,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:16,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:16,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:08:16,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:16,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:16,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:16,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:16,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-12 13:08:16,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-12 13:08:16,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-12 13:08:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-12 13:08:16,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872382431] [2020-10-12 13:08:16,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:16,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:08:16,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059452974] [2020-10-12 13:08:16,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:08:16,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:16,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:08:16,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:08:16,939 INFO L87 Difference]: Start difference. First operand 8149 states and 10396 transitions. Second operand 5 states. [2020-10-12 13:08:19,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:19,442 INFO L93 Difference]: Finished difference Result 17451 states and 23016 transitions. [2020-10-12 13:08:19,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:08:19,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 370 [2020-10-12 13:08:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:19,472 INFO L225 Difference]: With dead ends: 17451 [2020-10-12 13:08:19,472 INFO L226 Difference]: Without dead ends: 11258 [2020-10-12 13:08:19,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:08:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11258 states. [2020-10-12 13:08:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11258 to 11044. [2020-10-12 13:08:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11044 states. [2020-10-12 13:08:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11044 states to 11044 states and 13885 transitions. [2020-10-12 13:08:19,693 INFO L78 Accepts]: Start accepts. Automaton has 11044 states and 13885 transitions. Word has length 370 [2020-10-12 13:08:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:19,693 INFO L479 AbstractCegarLoop]: Abstraction has 11044 states and 13885 transitions. [2020-10-12 13:08:19,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:08:19,694 INFO L276 IsEmpty]: Start isEmpty. Operand 11044 states and 13885 transitions. [2020-10-12 13:08:19,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-12 13:08:19,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:19,714 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:19,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 13:08:19,714 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:19,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:19,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1640676129, now seen corresponding path program 1 times [2020-10-12 13:08:19,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:19,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956486647] [2020-10-12 13:08:19,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:22,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:22,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-12 13:08:22,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3014 [2020-10-12 13:08:22,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 13:08:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:22,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-12 13:08:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:22,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:22,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:22,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:22,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:08:22,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:22,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:22,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:22,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:23,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:23,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:23,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 13:08:23,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:23,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:08:23,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:23,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:23,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 13:08:23,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:23,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 13:08:23,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:23,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:23,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:08:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-12 13:08:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:23,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:23,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:08:23,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 13:08:23,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 13:08:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:08:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 170 proven. 188 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 13:08:24,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956486647] [2020-10-12 13:08:24,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:24,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 13:08:24,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565749382] [2020-10-12 13:08:24,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:08:24,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:24,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:08:24,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:08:24,372 INFO L87 Difference]: Start difference. First operand 11044 states and 13885 transitions. Second operand 13 states. [2020-10-12 13:08:24,615 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 13:08:24,812 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-12 13:08:25,009 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-12 13:08:25,348 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-12 13:08:25,726 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 13:08:26,949 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-12 13:08:27,135 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-12 13:08:27,361 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-12 13:08:27,612 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 13:08:27,780 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-10-12 13:08:28,059 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-12 13:08:28,438 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-12 13:08:29,220 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2020-10-12 13:08:29,474 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-12 13:08:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:31,995 INFO L93 Difference]: Finished difference Result 24830 states and 32010 transitions. [2020-10-12 13:08:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 13:08:31,996 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 374 [2020-10-12 13:08:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:32,034 INFO L225 Difference]: With dead ends: 24830 [2020-10-12 13:08:32,035 INFO L226 Difference]: Without dead ends: 15670 [2020-10-12 13:08:32,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=334, Invalid=1226, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 13:08:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15670 states. [2020-10-12 13:08:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15670 to 15287. [2020-10-12 13:08:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15287 states. [2020-10-12 13:08:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15287 states to 15287 states and 19574 transitions. [2020-10-12 13:08:32,346 INFO L78 Accepts]: Start accepts. Automaton has 15287 states and 19574 transitions. Word has length 374 [2020-10-12 13:08:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:32,346 INFO L479 AbstractCegarLoop]: Abstraction has 15287 states and 19574 transitions. [2020-10-12 13:08:32,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:08:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 15287 states and 19574 transitions. [2020-10-12 13:08:32,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-12 13:08:32,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:32,366 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:32,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 13:08:32,367 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:32,367 INFO L82 PathProgramCache]: Analyzing trace with hash -665471404, now seen corresponding path program 1 times [2020-10-12 13:08:32,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:32,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810391393] [2020-10-12 13:08:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:33,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:35,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:35,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-12 13:08:35,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:08:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3352 [2020-10-12 13:08:35,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 13:08:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:35,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 331 [2020-10-12 13:08:35,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:35,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:35,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:35,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:08:35,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:35,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:36,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:36,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:36,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 13:08:36,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:08:36,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:36,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:36,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 13:08:36,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:08:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 13:08:36,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:36,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:08:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-12 13:08:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:36,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:36,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:08:36,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:08:36,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:08:36,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 257 proven. 98 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 13:08:36,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810391393] [2020-10-12 13:08:36,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:36,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:36,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515688563] [2020-10-12 13:08:36,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:08:36,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:36,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:08:36,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:08:36,768 INFO L87 Difference]: Start difference. First operand 15287 states and 19574 transitions. Second operand 8 states. [2020-10-12 13:08:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:39,310 INFO L93 Difference]: Finished difference Result 26022 states and 34373 transitions. [2020-10-12 13:08:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:08:39,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 381 [2020-10-12 13:08:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:39,341 INFO L225 Difference]: With dead ends: 26022 [2020-10-12 13:08:39,341 INFO L226 Difference]: Without dead ends: 12492 [2020-10-12 13:08:39,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:08:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12492 states. [2020-10-12 13:08:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12492 to 10673. [2020-10-12 13:08:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10673 states. [2020-10-12 13:08:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10673 states to 10673 states and 12659 transitions. [2020-10-12 13:08:39,572 INFO L78 Accepts]: Start accepts. Automaton has 10673 states and 12659 transitions. Word has length 381 [2020-10-12 13:08:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:39,572 INFO L479 AbstractCegarLoop]: Abstraction has 10673 states and 12659 transitions. [2020-10-12 13:08:39,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:08:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10673 states and 12659 transitions. [2020-10-12 13:08:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-12 13:08:39,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:39,589 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:39,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 13:08:39,589 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash 40181944, now seen corresponding path program 1 times [2020-10-12 13:08:39,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:39,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22767405] [2020-10-12 13:08:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:40,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:41,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:41,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-12 13:08:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:08:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-10-12 13:08:41,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:08:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 347 [2020-10-12 13:08:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:41,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:41,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:41,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:08:41,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:41,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:42,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:08:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:42,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:42,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:08:42,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:42,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 13:08:42,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:42,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:42,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:08:42,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-12 13:08:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:42,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:42,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:42,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:08:42,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:42,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 13:08:42,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:42,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:08:42,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 167 proven. 6 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-12 13:08:42,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22767405] [2020-10-12 13:08:42,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:42,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:08:42,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898007985] [2020-10-12 13:08:42,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:08:42,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:42,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:08:42,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:08:42,539 INFO L87 Difference]: Start difference. First operand 10673 states and 12659 transitions. Second operand 9 states. [2020-10-12 13:08:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:48,392 INFO L93 Difference]: Finished difference Result 24329 states and 29563 transitions. [2020-10-12 13:08:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 13:08:48,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 397 [2020-10-12 13:08:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:48,422 INFO L225 Difference]: With dead ends: 24329 [2020-10-12 13:08:48,422 INFO L226 Difference]: Without dead ends: 15224 [2020-10-12 13:08:48,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-12 13:08:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15224 states. [2020-10-12 13:08:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15224 to 14757. [2020-10-12 13:08:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14757 states. [2020-10-12 13:08:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14757 states to 14757 states and 17576 transitions. [2020-10-12 13:08:48,729 INFO L78 Accepts]: Start accepts. Automaton has 14757 states and 17576 transitions. Word has length 397 [2020-10-12 13:08:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:48,729 INFO L479 AbstractCegarLoop]: Abstraction has 14757 states and 17576 transitions. [2020-10-12 13:08:48,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:08:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14757 states and 17576 transitions. [2020-10-12 13:08:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-12 13:08:48,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:48,746 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:08:48,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 13:08:48,747 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:48,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:48,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1751037336, now seen corresponding path program 1 times [2020-10-12 13:08:48,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:48,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442241314] [2020-10-12 13:08:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-12 13:08:49,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-12 13:08:49,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:08:49,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:08:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:49,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:08:49,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:49,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:49,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:08:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 13:08:49,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:08:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:08:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:08:49,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 13:08:49,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:08:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-12 13:08:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:49,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:49,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:08:49,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:49,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 13:08:49,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:49,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:08:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 13:08:49,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:08:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 267 proven. 103 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-12 13:08:49,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442241314] [2020-10-12 13:08:49,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:49,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:08:49,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797745878] [2020-10-12 13:08:49,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:08:49,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:49,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:08:49,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:08:49,777 INFO L87 Difference]: Start difference. First operand 14757 states and 17576 transitions. Second operand 7 states. [2020-10-12 13:08:52,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:08:52,704 INFO L93 Difference]: Finished difference Result 35658 states and 42600 transitions. [2020-10-12 13:08:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:08:52,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-12 13:08:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:08:52,742 INFO L225 Difference]: With dead ends: 35658 [2020-10-12 13:08:52,742 INFO L226 Difference]: Without dead ends: 21285 [2020-10-12 13:08:52,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:08:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21285 states. [2020-10-12 13:08:53,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21285 to 20857. [2020-10-12 13:08:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20857 states. [2020-10-12 13:08:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20857 states to 20857 states and 24485 transitions. [2020-10-12 13:08:53,169 INFO L78 Accepts]: Start accepts. Automaton has 20857 states and 24485 transitions. Word has length 402 [2020-10-12 13:08:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:08:53,170 INFO L479 AbstractCegarLoop]: Abstraction has 20857 states and 24485 transitions. [2020-10-12 13:08:53,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:08:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 20857 states and 24485 transitions. [2020-10-12 13:08:53,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-12 13:08:53,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:08:53,196 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-12 13:08:53,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 13:08:53,196 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:08:53,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:08:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1328325643, now seen corresponding path program 1 times [2020-10-12 13:08:53,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:08:53,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896605262] [2020-10-12 13:08:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:08:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:53,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:55,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:58,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:58,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-12 13:08:58,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:08:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 13:08:58,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 13:08:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:08:58,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 420 [2020-10-12 13:08:58,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:58,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:08:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:58,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:58,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:08:58,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:58,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:08:58,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:08:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:08:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:08:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:08:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:58,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:58,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:08:58,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 13:08:58,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:58,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 13:08:58,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:58,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:08:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:58,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:58,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:58,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:08:58,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-12 13:08:58,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:08:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:08:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-12 13:08:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:08:59,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 13:08:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:08:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-12 13:08:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:08:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:08:59,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:08:59,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:08:59,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:08:59,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 13:08:59,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:08:59,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:08:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:08:59,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:08:59,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:08:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 229 proven. 10 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2020-10-12 13:08:59,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896605262] [2020-10-12 13:08:59,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:08:59,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:08:59,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346123746] [2020-10-12 13:08:59,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 13:08:59,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:08:59,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 13:08:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:08:59,437 INFO L87 Difference]: Start difference. First operand 20857 states and 24485 transitions. Second operand 9 states. [2020-10-12 13:09:05,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:05,263 INFO L93 Difference]: Finished difference Result 37725 states and 44928 transitions. [2020-10-12 13:09:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 13:09:05,264 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 468 [2020-10-12 13:09:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:05,293 INFO L225 Difference]: With dead ends: 37725 [2020-10-12 13:09:05,293 INFO L226 Difference]: Without dead ends: 19201 [2020-10-12 13:09:05,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-12 13:09:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19201 states. [2020-10-12 13:09:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19201 to 18724. [2020-10-12 13:09:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18724 states. [2020-10-12 13:09:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18724 states to 18724 states and 22014 transitions. [2020-10-12 13:09:05,644 INFO L78 Accepts]: Start accepts. Automaton has 18724 states and 22014 transitions. Word has length 468 [2020-10-12 13:09:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:05,645 INFO L479 AbstractCegarLoop]: Abstraction has 18724 states and 22014 transitions. [2020-10-12 13:09:05,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 13:09:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 18724 states and 22014 transitions. [2020-10-12 13:09:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-12 13:09:05,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:05,667 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-12 13:09:05,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 13:09:05,667 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1805822948, now seen corresponding path program 1 times [2020-10-12 13:09:05,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:05,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742066712] [2020-10-12 13:09:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:05,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:06,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:10,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:10,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-12 13:09:10,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:10,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4518 [2020-10-12 13:09:10,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:10,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-12 13:09:10,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 13:09:10,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:10,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:10,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:10,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:10,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:10,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:10,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:10,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:10,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 13:09:10,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 13:09:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:09:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:10,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:10,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:09:10,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:10,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 13:09:10,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:10,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 13:09:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-12 13:09:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:10,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:10,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:10,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 13:09:10,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-12 13:09:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2020-10-12 13:09:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:10,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:10,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:10,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:09:10,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:10,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:09:10,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 13:09:10,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:10,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 325 proven. 208 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-12 13:09:10,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742066712] [2020-10-12 13:09:10,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:10,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:09:10,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711835494] [2020-10-12 13:09:10,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:10,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:10,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:10,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:10,984 INFO L87 Difference]: Start difference. First operand 18724 states and 22014 transitions. Second operand 7 states. [2020-10-12 13:09:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:15,005 INFO L93 Difference]: Finished difference Result 37790 states and 44463 transitions. [2020-10-12 13:09:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:09:15,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-12 13:09:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:15,033 INFO L225 Difference]: With dead ends: 37790 [2020-10-12 13:09:15,034 INFO L226 Difference]: Without dead ends: 19450 [2020-10-12 13:09:15,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:15,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2020-10-12 13:09:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 18662. [2020-10-12 13:09:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18662 states. [2020-10-12 13:09:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18662 states to 18662 states and 21503 transitions. [2020-10-12 13:09:15,319 INFO L78 Accepts]: Start accepts. Automaton has 18662 states and 21503 transitions. Word has length 534 [2020-10-12 13:09:15,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:15,320 INFO L479 AbstractCegarLoop]: Abstraction has 18662 states and 21503 transitions. [2020-10-12 13:09:15,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 18662 states and 21503 transitions. [2020-10-12 13:09:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-12 13:09:15,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:15,342 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:15,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 13:09:15,343 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:15,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:15,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1060201431, now seen corresponding path program 1 times [2020-10-12 13:09:15,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:15,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424292136] [2020-10-12 13:09:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:16,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-12 13:09:20,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 13:09:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:20,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:20,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:20,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:20,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:20,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:09:20,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 13:09:20,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:20,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:09:20,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:09:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:20,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:20,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:09:20,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-12 13:09:20,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:20,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:09:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:21,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-12 13:09:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:21,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:09:21,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:21,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 13:09:21,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 13:09:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-12 13:09:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:21,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:09:21,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:21,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:09:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-12 13:09:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:21,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-10-12 13:09:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:21,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:21,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:21,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:09:21,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 13:09:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:21,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 13:09:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:09:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 384 proven. 285 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2020-10-12 13:09:21,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424292136] [2020-10-12 13:09:21,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:21,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:09:21,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969640611] [2020-10-12 13:09:21,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:09:21,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:21,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:09:21,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:09:21,560 INFO L87 Difference]: Start difference. First operand 18662 states and 21503 transitions. Second operand 8 states. [2020-10-12 13:09:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:25,519 INFO L93 Difference]: Finished difference Result 37148 states and 42840 transitions. [2020-10-12 13:09:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:09:25,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 578 [2020-10-12 13:09:25,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:25,548 INFO L225 Difference]: With dead ends: 37148 [2020-10-12 13:09:25,548 INFO L226 Difference]: Without dead ends: 18878 [2020-10-12 13:09:25,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18878 states. [2020-10-12 13:09:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18878 to 18841. [2020-10-12 13:09:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18841 states. [2020-10-12 13:09:25,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18841 states to 18841 states and 21650 transitions. [2020-10-12 13:09:25,832 INFO L78 Accepts]: Start accepts. Automaton has 18841 states and 21650 transitions. Word has length 578 [2020-10-12 13:09:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:25,832 INFO L479 AbstractCegarLoop]: Abstraction has 18841 states and 21650 transitions. [2020-10-12 13:09:25,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:09:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 18841 states and 21650 transitions. [2020-10-12 13:09:25,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-12 13:09:25,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:25,854 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:09:25,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 13:09:25,855 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:25,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:25,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1845728477, now seen corresponding path program 1 times [2020-10-12 13:09:25,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:25,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978736162] [2020-10-12 13:09:25,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:30,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 13:09:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:31,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:09:31,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:09:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 13:09:31,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:31,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:09:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:31,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:31,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:09:31,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-12 13:09:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:09:31,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 13:09:31,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:31,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:09:31,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-12 13:09:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-10-12 13:09:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:31,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:31,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:31,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:09:31,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 13:09:31,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:31,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1233 backedges. 452 proven. 168 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-10-12 13:09:31,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978736162] [2020-10-12 13:09:31,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:31,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:09:31,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888008331] [2020-10-12 13:09:31,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:31,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:31,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:31,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:31,609 INFO L87 Difference]: Start difference. First operand 18841 states and 21650 transitions. Second operand 7 states. [2020-10-12 13:09:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:34,623 INFO L93 Difference]: Finished difference Result 39817 states and 45904 transitions. [2020-10-12 13:09:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:09:34,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 588 [2020-10-12 13:09:34,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:34,660 INFO L225 Difference]: With dead ends: 39817 [2020-10-12 13:09:34,660 INFO L226 Difference]: Without dead ends: 21368 [2020-10-12 13:09:34,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:34,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21368 states. [2020-10-12 13:09:34,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21368 to 20762. [2020-10-12 13:09:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20762 states. [2020-10-12 13:09:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20762 states to 20762 states and 23743 transitions. [2020-10-12 13:09:34,972 INFO L78 Accepts]: Start accepts. Automaton has 20762 states and 23743 transitions. Word has length 588 [2020-10-12 13:09:34,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:34,973 INFO L479 AbstractCegarLoop]: Abstraction has 20762 states and 23743 transitions. [2020-10-12 13:09:34,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:34,973 INFO L276 IsEmpty]: Start isEmpty. Operand 20762 states and 23743 transitions. [2020-10-12 13:09:34,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2020-10-12 13:09:34,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:34,997 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-12 13:09:34,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 13:09:34,998 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1134069457, now seen corresponding path program 1 times [2020-10-12 13:09:34,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:34,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431277534] [2020-10-12 13:09:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:35,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:38,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:38,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-12 13:09:38,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3648 [2020-10-12 13:09:38,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:09:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-12 13:09:38,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-12 13:09:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:38,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:38,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:38,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:09:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:38,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:38,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:38,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 13:09:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:39,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:09:39,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 13:09:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:39,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-12 13:09:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 13:09:39,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:39,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:09:39,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-10-12 13:09:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:39,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:09:39,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 13:09:39,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:09:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 13:09:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2020-10-12 13:09:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:39,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:39,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:09:39,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:39,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 13:09:39,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 13:09:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 699 proven. 192 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2020-10-12 13:09:39,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431277534] [2020-10-12 13:09:39,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:39,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:09:39,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401145941] [2020-10-12 13:09:39,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:09:39,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:39,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:09:39,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:09:39,764 INFO L87 Difference]: Start difference. First operand 20762 states and 23743 transitions. Second operand 7 states. [2020-10-12 13:09:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:09:43,367 INFO L93 Difference]: Finished difference Result 41339 states and 47478 transitions. [2020-10-12 13:09:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:09:43,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 632 [2020-10-12 13:09:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:09:43,414 INFO L225 Difference]: With dead ends: 41339 [2020-10-12 13:09:43,414 INFO L226 Difference]: Without dead ends: 23287 [2020-10-12 13:09:43,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:09:43,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23287 states. [2020-10-12 13:09:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23287 to 22476. [2020-10-12 13:09:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22476 states. [2020-10-12 13:09:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22476 states to 22476 states and 25542 transitions. [2020-10-12 13:09:43,754 INFO L78 Accepts]: Start accepts. Automaton has 22476 states and 25542 transitions. Word has length 632 [2020-10-12 13:09:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:09:43,755 INFO L479 AbstractCegarLoop]: Abstraction has 22476 states and 25542 transitions. [2020-10-12 13:09:43,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:09:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22476 states and 25542 transitions. [2020-10-12 13:09:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-12 13:09:43,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:09:43,780 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-12 13:09:43,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 13:09:43,780 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:09:43,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:09:43,781 INFO L82 PathProgramCache]: Analyzing trace with hash 556354251, now seen corresponding path program 1 times [2020-10-12 13:09:43,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:09:43,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686788839] [2020-10-12 13:09:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:09:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:44,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:48,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:48,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 695 [2020-10-12 13:09:48,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:09:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 13:09:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 13:09:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-12 13:09:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-12 13:09:48,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:09:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:49,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:49,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:49,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:09:49,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:49,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:09:49,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:49,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:49,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:09:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:49,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:49,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-12 13:09:49,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-12 13:09:49,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:09:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:09:49,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 13:09:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-12 13:09:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:50,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:50,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 13:09:50,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:09:50,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-10-12 13:09:50,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 13:09:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:09:50,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-12 13:09:50,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:50,672 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-12 13:09:50,965 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-12 13:09:51,291 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-12 13:09:51,608 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 79 [2020-10-12 13:09:51,930 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2020-10-12 13:09:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-12 13:09:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:52,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:52,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-12 13:09:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:52,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:52,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:52,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-12 13:09:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:09:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:09:52,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:09:52,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:09:52,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:09:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 13:09:52,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:09:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:09:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 13:09:52,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:09:52,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:09:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 400 proven. 319 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-12 13:09:54,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686788839] [2020-10-12 13:09:54,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:09:54,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 13:09:54,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416020087] [2020-10-12 13:09:54,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 13:09:54,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:09:54,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 13:09:54,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:09:54,365 INFO L87 Difference]: Start difference. First operand 22476 states and 25542 transitions. Second operand 13 states. [2020-10-12 13:09:55,690 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 75 [2020-10-12 13:09:55,962 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2020-10-12 13:09:56,335 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2020-10-12 13:09:56,853 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 93 [2020-10-12 13:09:57,566 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 107 [2020-10-12 13:09:57,950 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2020-10-12 13:09:58,474 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 99 [2020-10-12 13:09:58,774 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2020-10-12 13:09:59,618 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 96 [2020-10-12 13:10:00,949 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2020-10-12 13:10:01,275 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 64 [2020-10-12 13:10:01,729 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-10-12 13:10:02,194 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 68 [2020-10-12 13:10:03,244 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2020-10-12 13:10:03,727 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 69 [2020-10-12 13:10:04,045 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-12 13:10:04,469 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 68 [2020-10-12 13:10:05,516 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-12 13:10:07,877 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 108 [2020-10-12 13:10:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:08,173 INFO L93 Difference]: Finished difference Result 45184 states and 51351 transitions. [2020-10-12 13:10:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 13:10:08,175 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 677 [2020-10-12 13:10:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:08,212 INFO L225 Difference]: With dead ends: 45184 [2020-10-12 13:10:08,212 INFO L226 Difference]: Without dead ends: 23013 [2020-10-12 13:10:08,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 13:10:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23013 states. [2020-10-12 13:10:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23013 to 22959. [2020-10-12 13:10:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22959 states. [2020-10-12 13:10:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22959 states to 22959 states and 26055 transitions. [2020-10-12 13:10:08,584 INFO L78 Accepts]: Start accepts. Automaton has 22959 states and 26055 transitions. Word has length 677 [2020-10-12 13:10:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:08,585 INFO L479 AbstractCegarLoop]: Abstraction has 22959 states and 26055 transitions. [2020-10-12 13:10:08,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 13:10:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 22959 states and 26055 transitions. [2020-10-12 13:10:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2020-10-12 13:10:08,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:08,617 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:10:08,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 13:10:08,618 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:08,618 INFO L82 PathProgramCache]: Analyzing trace with hash 33099495, now seen corresponding path program 1 times [2020-10-12 13:10:08,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:08,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78326588] [2020-10-12 13:10:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:09,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:11,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:13,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:13,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 700 [2020-10-12 13:10:13,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:10:13,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-12 13:10:13,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 13:10:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 308 [2020-10-12 13:10:13,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 333 [2020-10-12 13:10:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:13,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:13,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:13,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:13,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:13,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:13,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 13:10:13,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:13,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:14,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:14,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:14,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 13:10:14,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:10:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 13:10:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-12 13:10:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:14,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:14,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 13:10:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 13:10:14,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 13:10:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 13:10:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:14,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-12 13:10:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:14,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:14,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:14,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 13:10:14,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:14,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-12 13:10:14,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-12 13:10:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-10-12 13:10:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:14,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:14,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:14,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:10:14,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 13:10:14,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 13:10:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 1006 proven. 91 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-12 13:10:15,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78326588] [2020-10-12 13:10:15,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:15,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 13:10:15,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742197854] [2020-10-12 13:10:15,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 13:10:15,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 13:10:15,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:10:15,101 INFO L87 Difference]: Start difference. First operand 22959 states and 26055 transitions. Second operand 10 states. [2020-10-12 13:10:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:22,657 INFO L93 Difference]: Finished difference Result 53534 states and 61226 transitions. [2020-10-12 13:10:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 13:10:22,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 682 [2020-10-12 13:10:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:22,710 INFO L225 Difference]: With dead ends: 53534 [2020-10-12 13:10:22,711 INFO L226 Difference]: Without dead ends: 32106 [2020-10-12 13:10:22,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-12 13:10:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32106 states. [2020-10-12 13:10:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32106 to 27575. [2020-10-12 13:10:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27575 states. [2020-10-12 13:10:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27575 states to 27575 states and 31179 transitions. [2020-10-12 13:10:23,105 INFO L78 Accepts]: Start accepts. Automaton has 27575 states and 31179 transitions. Word has length 682 [2020-10-12 13:10:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:23,106 INFO L479 AbstractCegarLoop]: Abstraction has 27575 states and 31179 transitions. [2020-10-12 13:10:23,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 13:10:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 27575 states and 31179 transitions. [2020-10-12 13:10:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2020-10-12 13:10:23,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:10:23,126 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 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] [2020-10-12 13:10:23,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 13:10:23,127 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:10:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:10:23,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1455416601, now seen corresponding path program 1 times [2020-10-12 13:10:23,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:10:23,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997609861] [2020-10-12 13:10:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:10:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:23,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 755 [2020-10-12 13:10:27,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 13:10:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4185 [2020-10-12 13:10:27,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 479 [2020-10-12 13:10:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:10:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:10:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:27,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:10:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:27,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 13:10:27,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 13:10:27,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 13:10:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:10:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-12 13:10:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:27,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 13:10:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-12 13:10:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:28,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:28,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:10:28,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 13:10:28,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:10:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:10:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 13:10:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-10-12 13:10:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:10:28,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:10:28,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:10:28,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 13:10:28,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:10:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 13:10:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:10:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:10:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-12 13:10:28,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:10:28,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:10:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1417 backedges. 597 proven. 109 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2020-10-12 13:10:28,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997609861] [2020-10-12 13:10:28,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:10:28,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 13:10:28,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199627870] [2020-10-12 13:10:28,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:10:28,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:10:28,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:10:28,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:10:28,360 INFO L87 Difference]: Start difference. First operand 27575 states and 31179 transitions. Second operand 8 states. [2020-10-12 13:10:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:10:31,252 INFO L93 Difference]: Finished difference Result 42212 states and 47430 transitions. [2020-10-12 13:10:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:10:31,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 737 [2020-10-12 13:10:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:10:31,253 INFO L225 Difference]: With dead ends: 42212 [2020-10-12 13:10:31,253 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 13:10:31,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-12 13:10:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 13:10:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 13:10:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 13:10:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 13:10:31,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 737 [2020-10-12 13:10:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:10:31,285 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 13:10:31,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:10:31,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 13:10:31,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 13:10:31,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 13:10:31,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.