/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 06:58:47,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 06:58:47,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 06:58:47,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 06:58:47,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 06:58:47,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 06:58:47,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 06:58:47,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 06:58:47,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 06:58:47,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 06:58:47,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 06:58:47,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 06:58:47,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 06:58:47,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 06:58:47,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 06:58:47,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 06:58:47,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 06:58:47,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 06:58:47,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 06:58:47,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 06:58:47,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 06:58:47,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 06:58:47,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 06:58:47,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 06:58:47,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 06:58:47,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 06:58:47,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 06:58:47,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 06:58:47,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 06:58:47,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 06:58:47,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 06:58:47,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 06:58:47,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 06:58:47,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 06:58:47,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 06:58:47,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 06:58:47,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 06:58:47,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 06:58:47,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 06:58:47,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 06:58:47,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 06:58:47,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 06:58:47,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 06:58:47,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 06:58:47,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 06:58:47,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 06:58:47,438 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 06:58:47,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 06:58:47,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 06:58:47,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 06:58:47,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 06:58:47,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 06:58:47,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 06:58:47,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 06:58:47,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 06:58:47,440 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 06:58:47,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 06:58:47,440 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 06:58:47,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 06:58:47,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 06:58:47,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 06:58:47,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 06:58:47,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 06:58:47,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:58:47,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 06:58:47,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 06:58:47,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 06:58:47,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 06:58:47,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 06:58:47,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 06:58:47,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 06:58:47,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 06:58:47,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 06:58:47,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 06:58:47,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 06:58:47,759 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 06:58:47,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 06:58:47,763 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label57.c [2020-10-13 06:58:47,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841270be6/95f8215567824730a7e9b1bdd9baff2f/FLAGa0a769173 [2020-10-13 06:58:48,760 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 06:58:48,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label57.c [2020-10-13 06:58:48,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841270be6/95f8215567824730a7e9b1bdd9baff2f/FLAGa0a769173 [2020-10-13 06:58:49,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/841270be6/95f8215567824730a7e9b1bdd9baff2f [2020-10-13 06:58:49,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 06:58:49,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 06:58:49,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 06:58:49,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 06:58:49,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 06:58:49,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:49" (1/1) ... [2020-10-13 06:58:49,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db9ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:49, skipping insertion in model container [2020-10-13 06:58:49,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:58:49" (1/1) ... [2020-10-13 06:58:49,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 06:58:49,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 06:58:51,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:58:51,635 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 06:58:53,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 06:58:53,101 INFO L208 MainTranslator]: Completed translation [2020-10-13 06:58:53,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53 WrapperNode [2020-10-13 06:58:53,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 06:58:53,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 06:58:53,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 06:58:53,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 06:58:53,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... [2020-10-13 06:58:53,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... [2020-10-13 06:58:53,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... [2020-10-13 06:58:53,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... [2020-10-13 06:58:53,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... [2020-10-13 06:58:53,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... [2020-10-13 06:58:53,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... [2020-10-13 06:58:53,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 06:58:53,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 06:58:53,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 06:58:53,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 06:58:53,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 06:58:53,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 06:58:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 06:58:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 06:58:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 06:58:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 06:58:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 06:58:53,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 06:58:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-13 06:58:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-13 06:58:53,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-13 06:58:53,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 06:58:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 06:58:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 06:58:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 06:58:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 06:58:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 06:58:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-13 06:58:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-13 06:58:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-13 06:58:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 06:58:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 06:58:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 06:58:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 06:58:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 06:58:53,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 06:59:01,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 06:59:01,679 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 06:59:01,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:01 BoogieIcfgContainer [2020-10-13 06:59:01,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 06:59:01,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 06:59:01,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 06:59:01,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 06:59:01,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:58:49" (1/3) ... [2020-10-13 06:59:01,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f20ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:01, skipping insertion in model container [2020-10-13 06:59:01,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:58:53" (2/3) ... [2020-10-13 06:59:01,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f20ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:01, skipping insertion in model container [2020-10-13 06:59:01,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:01" (3/3) ... [2020-10-13 06:59:01,709 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label57.c [2020-10-13 06:59:01,718 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 06:59:01,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 06:59:01,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 06:59:01,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 06:59:01,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 06:59:01,770 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 06:59:01,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 06:59:01,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 06:59:01,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 06:59:01,770 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 06:59:01,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 06:59:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-13 06:59:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1655 [2020-10-13 06:59:01,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:59:01,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:59:01,970 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:59:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:59:01,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1644649951, now seen corresponding path program 1 times [2020-10-13 06:59:01,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:59:01,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506130303] [2020-10-13 06:59:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:59:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:07,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:07,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1676 [2020-10-13 06:59:07,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:59:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 06:59:07,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 06:59:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:59:07,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1670 [2020-10-13 06:59:07,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 06:59:09,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:59:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:09,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:09,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:09,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:59:09,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:59:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 06:59:09,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:59:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:59:09,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:59:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:59:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 06:59:12,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506130303] [2020-10-13 06:59:12,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 06:59:12,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 06:59:12,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155730070] [2020-10-13 06:59:12,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 06:59:12,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:59:12,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 06:59:12,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 06:59:12,917 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 5 states. [2020-10-13 06:59:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 06:59:38,828 INFO L93 Difference]: Finished difference Result 8279 states and 15699 transitions. [2020-10-13 06:59:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 06:59:38,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1654 [2020-10-13 06:59:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 06:59:38,889 INFO L225 Difference]: With dead ends: 8279 [2020-10-13 06:59:38,890 INFO L226 Difference]: Without dead ends: 5989 [2020-10-13 06:59:38,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 06:59:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2020-10-13 06:59:39,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5833. [2020-10-13 06:59:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5833 states. [2020-10-13 06:59:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 10149 transitions. [2020-10-13 06:59:39,160 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 10149 transitions. Word has length 1654 [2020-10-13 06:59:39,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 06:59:39,165 INFO L479 AbstractCegarLoop]: Abstraction has 5833 states and 10149 transitions. [2020-10-13 06:59:39,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 06:59:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 10149 transitions. [2020-10-13 06:59:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1688 [2020-10-13 06:59:39,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 06:59:39,295 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 06:59:39,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 06:59:39,295 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 06:59:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 06:59:39,297 INFO L82 PathProgramCache]: Analyzing trace with hash 550088699, now seen corresponding path program 1 times [2020-10-13 06:59:39,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 06:59:39,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601914076] [2020-10-13 06:59:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 06:59:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:44,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:44,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1713 [2020-10-13 06:59:44,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 06:59:44,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-13 06:59:44,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 06:59:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 06:59:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 06:59:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 06:59:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 06:59:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:45,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 06:59:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 06:59:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 06:59:45,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 06:59:45,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 06:59:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 06:59:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:59:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 06:59:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 06:59:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 06:59:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 06:59:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:59:45,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 06:59:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 06:59:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 06:59:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 06:59:45,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 06:59:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 06:59:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 06:59:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 06:59:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 06:59:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 06:59:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 06:59:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 06:59:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 06:59:46,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601914076] [2020-10-13 06:59:46,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 06:59:46,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 06:59:46,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090210039] [2020-10-13 06:59:46,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 06:59:46,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 06:59:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 06:59:46,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 06:59:46,901 INFO L87 Difference]: Start difference. First operand 5833 states and 10149 transitions. Second operand 8 states. [2020-10-13 07:00:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:00:17,657 INFO L93 Difference]: Finished difference Result 22567 states and 40522 transitions. [2020-10-13 07:00:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 07:00:17,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1687 [2020-10-13 07:00:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:00:17,746 INFO L225 Difference]: With dead ends: 22567 [2020-10-13 07:00:17,747 INFO L226 Difference]: Without dead ends: 16740 [2020-10-13 07:00:17,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 07:00:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16740 states. [2020-10-13 07:00:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16740 to 16691. [2020-10-13 07:00:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16691 states. [2020-10-13 07:00:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16691 states to 16691 states and 26556 transitions. [2020-10-13 07:00:18,238 INFO L78 Accepts]: Start accepts. Automaton has 16691 states and 26556 transitions. Word has length 1687 [2020-10-13 07:00:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:00:18,239 INFO L479 AbstractCegarLoop]: Abstraction has 16691 states and 26556 transitions. [2020-10-13 07:00:18,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 07:00:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16691 states and 26556 transitions. [2020-10-13 07:00:18,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2020-10-13 07:00:18,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:00:18,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:00:18,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:00:18,426 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:00:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:00:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2094130343, now seen corresponding path program 1 times [2020-10-13 07:00:18,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:00:18,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626101482] [2020-10-13 07:00:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:00:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:23,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1710 [2020-10-13 07:00:23,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:00:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-13 07:00:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:00:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:00:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 07:00:23,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:24,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:00:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:24,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:24,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:24,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:00:24,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:00:24,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 07:00:24,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:24,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:00:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:00:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:00:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:24,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:00:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:25,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:25,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 07:00:25,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:00:25,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 07:00:25,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:00:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:00:25,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 07:00:25,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:00:26,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626101482] [2020-10-13 07:00:26,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:00:26,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:00:26,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723420112] [2020-10-13 07:00:26,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:00:26,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:00:26,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:00:26,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:00:26,377 INFO L87 Difference]: Start difference. First operand 16691 states and 26556 transitions. Second operand 7 states. [2020-10-13 07:00:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:00:48,660 INFO L93 Difference]: Finished difference Result 38915 states and 61825 transitions. [2020-10-13 07:00:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 07:00:48,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1686 [2020-10-13 07:00:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:00:48,733 INFO L225 Difference]: With dead ends: 38915 [2020-10-13 07:00:48,733 INFO L226 Difference]: Without dead ends: 22230 [2020-10-13 07:00:48,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:00:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22230 states. [2020-10-13 07:00:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22230 to 22207. [2020-10-13 07:00:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22207 states. [2020-10-13 07:00:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22207 states to 22207 states and 30975 transitions. [2020-10-13 07:00:49,278 INFO L78 Accepts]: Start accepts. Automaton has 22207 states and 30975 transitions. Word has length 1686 [2020-10-13 07:00:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:00:49,279 INFO L479 AbstractCegarLoop]: Abstraction has 22207 states and 30975 transitions. [2020-10-13 07:00:49,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:00:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 22207 states and 30975 transitions. [2020-10-13 07:00:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1775 [2020-10-13 07:00:49,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:00:49,407 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:00:49,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:00:49,411 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:00:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:00:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash -247112600, now seen corresponding path program 1 times [2020-10-13 07:00:49,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:00:49,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636687773] [2020-10-13 07:00:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:00:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:54,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1800 [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 07:00:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:00:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:55,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:00:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:00:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 07:00:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:00:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:00:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:00:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:00:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:55,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:55,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 07:00:55,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:00:55,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 07:00:55,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:55,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:00:55,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:00:55,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 07:00:55,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 07:00:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:00:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:00:55,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:00:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 07:00:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:00:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 07:00:55,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:00:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:00:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:00:55,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 07:00:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:00:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:00:56,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636687773] [2020-10-13 07:00:56,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:00:56,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:00:56,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359282253] [2020-10-13 07:00:56,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:00:56,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:00:56,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:00:56,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:00:56,394 INFO L87 Difference]: Start difference. First operand 22207 states and 30975 transitions. Second operand 7 states. [2020-10-13 07:01:20,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:01:20,137 INFO L93 Difference]: Finished difference Result 68029 states and 104596 transitions. [2020-10-13 07:01:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:01:20,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1774 [2020-10-13 07:01:20,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:01:20,294 INFO L225 Difference]: With dead ends: 68029 [2020-10-13 07:01:20,294 INFO L226 Difference]: Without dead ends: 45828 [2020-10-13 07:01:20,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:01:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45828 states. [2020-10-13 07:01:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45828 to 45008. [2020-10-13 07:01:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45008 states. [2020-10-13 07:01:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45008 states to 45008 states and 59988 transitions. [2020-10-13 07:01:21,505 INFO L78 Accepts]: Start accepts. Automaton has 45008 states and 59988 transitions. Word has length 1774 [2020-10-13 07:01:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:01:21,505 INFO L479 AbstractCegarLoop]: Abstraction has 45008 states and 59988 transitions. [2020-10-13 07:01:21,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:01:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 45008 states and 59988 transitions. [2020-10-13 07:01:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1843 [2020-10-13 07:01:21,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:01:21,628 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:01:21,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:01:21,628 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:01:21,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:01:21,629 INFO L82 PathProgramCache]: Analyzing trace with hash 497546182, now seen corresponding path program 1 times [2020-10-13 07:01:21,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:01:21,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334094797] [2020-10-13 07:01:21,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:01:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:26,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:26,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1870 [2020-10-13 07:01:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:01:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-13 07:01:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:01:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:01:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 07:01:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:27,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:01:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:27,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:27,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:01:27,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:27,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 07:01:27,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:01:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:01:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:01:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:01:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:27,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:27,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 07:01:27,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 07:01:27,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:27,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:01:27,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:01:27,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 07:01:27,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:27,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 07:01:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:27,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:27,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:27,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 07:01:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 07:01:27,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:01:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 07:01:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:01:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 07:01:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:27,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:27,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 07:01:27,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:27,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 07:01:27,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:01:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 07:01:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:01:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 179 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 07:01:28,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334094797] [2020-10-13 07:01:28,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:01:28,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:01:28,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77019713] [2020-10-13 07:01:28,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:01:28,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:01:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:01:28,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:01:28,990 INFO L87 Difference]: Start difference. First operand 45008 states and 59988 transitions. Second operand 7 states. [2020-10-13 07:01:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:01:51,768 INFO L93 Difference]: Finished difference Result 106179 states and 144518 transitions. [2020-10-13 07:01:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:01:51,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1842 [2020-10-13 07:01:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:01:51,967 INFO L225 Difference]: With dead ends: 106179 [2020-10-13 07:01:51,967 INFO L226 Difference]: Without dead ends: 61177 [2020-10-13 07:01:52,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:01:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61177 states. [2020-10-13 07:01:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61177 to 60804. [2020-10-13 07:01:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60804 states. [2020-10-13 07:01:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60804 states to 60804 states and 81213 transitions. [2020-10-13 07:01:53,469 INFO L78 Accepts]: Start accepts. Automaton has 60804 states and 81213 transitions. Word has length 1842 [2020-10-13 07:01:53,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:01:53,470 INFO L479 AbstractCegarLoop]: Abstraction has 60804 states and 81213 transitions. [2020-10-13 07:01:53,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:01:53,470 INFO L276 IsEmpty]: Start isEmpty. Operand 60804 states and 81213 transitions. [2020-10-13 07:01:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1905 [2020-10-13 07:01:53,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:01:53,613 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:01:53,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 07:01:53,613 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:01:53,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:01:53,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1458783671, now seen corresponding path program 1 times [2020-10-13 07:01:53,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:01:53,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589388618] [2020-10-13 07:01:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:01:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:53,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:58,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:58,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1934 [2020-10-13 07:01:58,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 07:01:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5233 [2020-10-13 07:01:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:01:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 07:01:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 07:01:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:59,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:01:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:59,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:59,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:59,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:01:59,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 07:01:59,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:01:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:01:59,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:01:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:01:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:59,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:59,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 07:01:59,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 07:01:59,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:01:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:01:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 07:01:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:59,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 07:01:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:59,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 07:01:59,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 07:01:59,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:01:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:01:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 07:01:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 07:01:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:59,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:59,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 07:01:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 07:01:59,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:01:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 07:01:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:01:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:01:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-13 07:01:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:01:59,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:01:59,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:01:59,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 07:01:59,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:01:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 07:01:59,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:01:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:01:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 07:01:59,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:01:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:02:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 253 proven. 16 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2020-10-13 07:02:01,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589388618] [2020-10-13 07:02:01,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:02:01,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:02:01,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285610269] [2020-10-13 07:02:01,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:02:01,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:02:01,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:02:01,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:02:01,047 INFO L87 Difference]: Start difference. First operand 60804 states and 81213 transitions. Second operand 7 states. [2020-10-13 07:02:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:02:26,225 INFO L93 Difference]: Finished difference Result 179222 states and 254407 transitions. [2020-10-13 07:02:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 07:02:26,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1904 [2020-10-13 07:02:26,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:02:26,648 INFO L225 Difference]: With dead ends: 179222 [2020-10-13 07:02:26,648 INFO L226 Difference]: Without dead ends: 118424 [2020-10-13 07:02:26,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:02:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118424 states.