/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:33:33,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:33:33,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:33:33,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:33:33,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:33:33,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:33:33,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:33:33,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:33:33,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:33:33,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:33:33,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:33:33,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:33:33,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:33:33,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:33:33,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:33:33,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:33:33,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:33:33,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:33:33,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:33:33,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:33:33,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:33:33,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:33:33,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:33:33,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:33:33,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:33:33,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:33:33,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:33:33,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:33:33,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:33:33,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:33:33,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:33:33,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:33:33,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:33:33,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:33:33,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:33:33,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:33:33,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:33:33,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:33:33,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:33:33,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:33:33,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:33:33,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:33:33,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:33:33,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:33:33,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:33:33,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:33:33,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:33:33,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:33:33,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:33:33,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:33:33,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:33:33,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:33:33,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:33:33,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:33:33,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:33:33,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:33:33,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:33:33,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:33:33,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:33:33,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:33:33,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:33:33,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:33:33,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:33:33,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:33:33,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:33:33,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:33:33,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:33:33,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:33:33,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:33:33,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:33:33,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:33:33,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:33:34,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:33:34,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:33:34,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:33:34,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:33:34,074 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:33:34,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label11.c [2020-10-12 11:33:34,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c08e87c98/584a0c56d2f548d2abfa88b966f67376/FLAGa81336659 [2020-10-12 11:33:34,847 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:33:34,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label11.c [2020-10-12 11:33:34,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c08e87c98/584a0c56d2f548d2abfa88b966f67376/FLAGa81336659 [2020-10-12 11:33:34,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c08e87c98/584a0c56d2f548d2abfa88b966f67376 [2020-10-12 11:33:35,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:33:35,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:33:35,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:33:35,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:33:35,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:33:35,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:33:34" (1/1) ... [2020-10-12 11:33:35,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb1d53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:35, skipping insertion in model container [2020-10-12 11:33:35,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:33:34" (1/1) ... [2020-10-12 11:33:35,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:33:35,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:33:36,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:33:36,684 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:33:37,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:33:37,497 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:33:37,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37 WrapperNode [2020-10-12 11:33:37,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:33:37,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:33:37,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:33:37,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:33:37,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... [2020-10-12 11:33:37,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... [2020-10-12 11:33:37,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... [2020-10-12 11:33:37,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... [2020-10-12 11:33:37,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... [2020-10-12 11:33:37,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... [2020-10-12 11:33:37,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... [2020-10-12 11:33:37,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:33:37,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:33:37,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:33:37,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:33:37,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:33:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:33:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:33:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:33:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:33:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:33:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:33:37,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:33:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:33:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:33:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:33:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:33:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:33:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:33:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:33:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:33:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:33:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:33:42,258 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:33:42,259 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:33:42,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:33:42 BoogieIcfgContainer [2020-10-12 11:33:42,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:33:42,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:33:42,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:33:42,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:33:42,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:33:34" (1/3) ... [2020-10-12 11:33:42,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459ff25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:33:42, skipping insertion in model container [2020-10-12 11:33:42,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:33:37" (2/3) ... [2020-10-12 11:33:42,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459ff25e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:33:42, skipping insertion in model container [2020-10-12 11:33:42,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:33:42" (3/3) ... [2020-10-12 11:33:42,279 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label11.c [2020-10-12 11:33:42,289 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:33:42,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:33:42,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:33:42,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:33:42,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:33:42,339 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:33:42,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:33:42,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:33:42,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:33:42,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:33:42,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:33:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2020-10-12 11:33:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2020-10-12 11:33:42,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:33:42,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:33:42,422 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:33:42,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:33:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1929230314, now seen corresponding path program 1 times [2020-10-12 11:33:42,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:33:42,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26460971] [2020-10-12 11:33:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:33:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:43,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:48,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 793 [2020-10-12 11:33:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:33:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-12 11:33:48,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 11:33:48,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:33:48,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-12 11:33:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:33:52,467 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-12 11:33:52,671 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2020-10-12 11:33:52,887 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2020-10-12 11:33:53,172 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 57 [2020-10-12 11:33:53,478 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 53 [2020-10-12 11:33:53,750 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 49 [2020-10-12 11:33:54,001 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 46 [2020-10-12 11:33:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:33:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:33:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:33:54,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:33:54,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:33:54,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:33:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:33:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:33:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:33:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:33:54,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:33:54,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:34:00,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26460971] [2020-10-12 11:34:00,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:34:00,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 11:34:00,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921776987] [2020-10-12 11:34:00,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 11:34:00,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:34:00,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 11:34:00,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-12 11:34:00,546 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 18 states. [2020-10-12 11:34:00,924 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-12 11:34:01,093 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-12 11:34:01,306 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-12 11:34:01,807 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2020-10-12 11:34:02,242 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-10-12 11:34:04,617 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2020-10-12 11:34:05,066 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 117 [2020-10-12 11:34:07,062 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 11:34:07,398 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-10-12 11:34:08,628 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-12 11:34:12,312 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-12 11:34:12,470 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-12 11:34:17,184 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 11:34:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:34:19,374 INFO L93 Difference]: Finished difference Result 2548 states and 4905 transitions. [2020-10-12 11:34:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:34:19,378 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 779 [2020-10-12 11:34:19,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:34:19,448 INFO L225 Difference]: With dead ends: 2548 [2020-10-12 11:34:19,448 INFO L226 Difference]: Without dead ends: 1580 [2020-10-12 11:34:19,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 11:34:19,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2020-10-12 11:34:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2020-10-12 11:34:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-10-12 11:34:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2339 transitions. [2020-10-12 11:34:19,660 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2339 transitions. Word has length 779 [2020-10-12 11:34:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:34:19,663 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 2339 transitions. [2020-10-12 11:34:19,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 11:34:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2339 transitions. [2020-10-12 11:34:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2020-10-12 11:34:19,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:19,691 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:34:19,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:34:19,693 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:19,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:19,697 INFO L82 PathProgramCache]: Analyzing trace with hash 626326329, now seen corresponding path program 1 times [2020-10-12 11:34:19,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:19,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333336783] [2020-10-12 11:34:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:25,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:25,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 814 [2020-10-12 11:34:25,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:34:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-12 11:34:25,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:34:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:34:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 808 [2020-10-12 11:34:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:25,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:25,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:25,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:25,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:34:25,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:34:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:34:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:25,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:34:25,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:34:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:34:25,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:34:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:34:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:34:25,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:34:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:34:26,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333336783] [2020-10-12 11:34:26,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:34:26,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:34:26,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773529950] [2020-10-12 11:34:26,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:34:26,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:34:26,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:34:26,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:34:26,279 INFO L87 Difference]: Start difference. First operand 1580 states and 2339 transitions. Second operand 6 states. [2020-10-12 11:34:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:34:34,482 INFO L93 Difference]: Finished difference Result 3283 states and 5563 transitions. [2020-10-12 11:34:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:34:34,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 798 [2020-10-12 11:34:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:34:34,502 INFO L225 Difference]: With dead ends: 3283 [2020-10-12 11:34:34,502 INFO L226 Difference]: Without dead ends: 2436 [2020-10-12 11:34:34,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:34:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2020-10-12 11:34:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2425. [2020-10-12 11:34:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-12 11:34:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3478 transitions. [2020-10-12 11:34:34,583 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3478 transitions. Word has length 798 [2020-10-12 11:34:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:34:34,585 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3478 transitions. [2020-10-12 11:34:34,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:34:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3478 transitions. [2020-10-12 11:34:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2020-10-12 11:34:34,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:34,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:34:34,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:34:34,618 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:34,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2085008010, now seen corresponding path program 1 times [2020-10-12 11:34:34,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:34,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486424939] [2020-10-12 11:34:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:37,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:39,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:39,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-12 11:34:39,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:34:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 11:34:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:34:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 11:34:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 784 [2020-10-12 11:34:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:40,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:40,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:40,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:40,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:40,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:34:40,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:34:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:40,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:34:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:40,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:34:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:40,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:40,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:34:40,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:34:40,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:34:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:34:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:34:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:40,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:40,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:34:40,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:40,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:34:40,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:40,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:34:40,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 11:34:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:34:40,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486424939] [2020-10-12 11:34:40,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:34:40,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:34:40,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814167434] [2020-10-12 11:34:40,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:34:40,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:34:40,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:34:40,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:34:40,807 INFO L87 Difference]: Start difference. First operand 2425 states and 3478 transitions. Second operand 5 states. [2020-10-12 11:34:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:34:50,156 INFO L93 Difference]: Finished difference Result 5829 states and 9034 transitions. [2020-10-12 11:34:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:34:50,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 806 [2020-10-12 11:34:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:34:50,188 INFO L225 Difference]: With dead ends: 5829 [2020-10-12 11:34:50,196 INFO L226 Difference]: Without dead ends: 4137 [2020-10-12 11:34:50,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:34:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2020-10-12 11:34:50,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 4126. [2020-10-12 11:34:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2020-10-12 11:34:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5627 transitions. [2020-10-12 11:34:50,365 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5627 transitions. Word has length 806 [2020-10-12 11:34:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:34:50,367 INFO L479 AbstractCegarLoop]: Abstraction has 4126 states and 5627 transitions. [2020-10-12 11:34:50,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:34:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5627 transitions. [2020-10-12 11:34:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2020-10-12 11:34:50,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:34:50,388 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:34:50,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:34:50,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:34:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:34:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash -2124123774, now seen corresponding path program 1 times [2020-10-12 11:34:50,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:34:50,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566117650] [2020-10-12 11:34:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:34:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:55,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:55,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 831 [2020-10-12 11:34:55,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:34:55,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 11:34:55,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 11:34:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 11:34:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 754 [2020-10-12 11:34:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:57,810 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-10-12 11:34:57,965 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-10-12 11:34:58,269 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 47 [2020-10-12 11:34:58,634 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 45 [2020-10-12 11:34:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:34:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:59,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:59,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:34:59,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:59,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:34:59,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:34:59,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:34:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:59,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:34:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:59,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:34:59,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:34:59,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:34:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:34:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:34:59,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:34:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:34:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:34:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:34:59,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 11:34:59,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:34:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:34:59,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:34:59,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:34:59,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:34:59,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:34:59,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 11:35:04,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566117650] [2020-10-12 11:35:04,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:04,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 11:35:04,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007871019] [2020-10-12 11:35:04,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 11:35:04,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 11:35:04,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-12 11:35:04,429 INFO L87 Difference]: Start difference. First operand 4126 states and 5627 transitions. Second operand 19 states. [2020-10-12 11:35:04,939 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 11:35:05,117 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-12 11:35:05,982 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-10-12 11:35:07,154 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-10-12 11:35:09,426 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2020-10-12 11:35:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:26,158 INFO L93 Difference]: Finished difference Result 8299 states and 12072 transitions. [2020-10-12 11:35:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 11:35:26,162 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 813 [2020-10-12 11:35:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:26,189 INFO L225 Difference]: With dead ends: 8299 [2020-10-12 11:35:26,189 INFO L226 Difference]: Without dead ends: 4906 [2020-10-12 11:35:26,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2020-10-12 11:35:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4906 states. [2020-10-12 11:35:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4906 to 4898. [2020-10-12 11:35:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4898 states. [2020-10-12 11:35:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 6420 transitions. [2020-10-12 11:35:26,311 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 6420 transitions. Word has length 813 [2020-10-12 11:35:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:26,313 INFO L479 AbstractCegarLoop]: Abstraction has 4898 states and 6420 transitions. [2020-10-12 11:35:26,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 11:35:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 6420 transitions. [2020-10-12 11:35:26,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-12 11:35:26,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:26,333 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:26,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:35:26,333 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:26,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:26,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1699295014, now seen corresponding path program 1 times [2020-10-12 11:35:26,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:26,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017730284] [2020-10-12 11:35:26,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:31,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:31,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 864 [2020-10-12 11:35:31,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:35:31,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-12 11:35:31,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:35:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 11:35:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 621 [2020-10-12 11:35:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:33,934 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-12 11:35:34,052 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-10-12 11:35:34,311 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-12 11:35:34,612 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-10-12 11:35:34,765 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-10-12 11:35:35,009 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-10-12 11:35:35,157 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2020-10-12 11:35:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:35:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:35,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:35,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:35:35,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:35:35,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:35:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:35,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:35:35,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:35:35,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:35:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:35:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:35:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:35,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:35,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 11:35:35,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:35:35,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:35:35,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:35:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:35:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 11:35:35,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:35:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 11:35:40,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017730284] [2020-10-12 11:35:40,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:35:40,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:35:40,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888837128] [2020-10-12 11:35:40,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:35:40,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:35:40,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:35:40,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:35:40,045 INFO L87 Difference]: Start difference. First operand 4898 states and 6420 transitions. Second operand 17 states. [2020-10-12 11:35:40,685 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:35:41,318 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:35:45,056 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-12 11:35:46,358 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-12 11:35:47,388 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-12 11:35:49,583 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:35:50,121 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 11:35:52,455 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 11:35:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:35:54,030 INFO L93 Difference]: Finished difference Result 9677 states and 13352 transitions. [2020-10-12 11:35:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:35:54,032 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 846 [2020-10-12 11:35:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:35:54,059 INFO L225 Difference]: With dead ends: 9677 [2020-10-12 11:35:54,059 INFO L226 Difference]: Without dead ends: 5512 [2020-10-12 11:35:54,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:35:54,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2020-10-12 11:35:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 5512. [2020-10-12 11:35:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5512 states. [2020-10-12 11:35:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 7045 transitions. [2020-10-12 11:35:54,247 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 7045 transitions. Word has length 846 [2020-10-12 11:35:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:35:54,249 INFO L479 AbstractCegarLoop]: Abstraction has 5512 states and 7045 transitions. [2020-10-12 11:35:54,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:35:54,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 7045 transitions. [2020-10-12 11:35:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-10-12 11:35:54,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:35:54,278 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:35:54,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:35:54,278 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:35:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:35:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1234135919, now seen corresponding path program 1 times [2020-10-12 11:35:54,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:35:54,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743948523] [2020-10-12 11:35:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:35:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:35:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:35:59,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:35:59,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 876 [2020-10-12 11:35:59,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:35:59,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 11:35:59,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:35:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:35:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 11:35:59,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 555 [2020-10-12 11:35:59,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:01,100 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-10-12 11:36:01,934 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2020-10-12 11:36:02,273 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 49 [2020-10-12 11:36:02,542 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 44 [2020-10-12 11:36:02,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:02,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:02,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:02,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:36:02,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:36:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:02,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:02,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:02,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:36:02,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:36:02,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 11:36:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:02,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:02,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:02,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 11:36:02,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:36:02,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 11:36:02,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 11:36:06,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743948523] [2020-10-12 11:36:06,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:06,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:36:06,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184534725] [2020-10-12 11:36:06,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:36:06,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:06,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:36:06,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:36:06,735 INFO L87 Difference]: Start difference. First operand 5512 states and 7045 transitions. Second operand 17 states. [2020-10-12 11:36:09,803 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-12 11:36:14,263 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-12 11:36:14,511 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 11:36:17,236 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-12 11:36:21,124 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-10-12 11:36:21,434 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 92 [2020-10-12 11:36:22,775 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 94 [2020-10-12 11:36:23,740 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2020-10-12 11:36:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:27,833 INFO L93 Difference]: Finished difference Result 10839 states and 14469 transitions. [2020-10-12 11:36:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:36:27,834 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 856 [2020-10-12 11:36:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:27,858 INFO L225 Difference]: With dead ends: 10839 [2020-10-12 11:36:27,858 INFO L226 Difference]: Without dead ends: 6060 [2020-10-12 11:36:27,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:36:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2020-10-12 11:36:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 6060. [2020-10-12 11:36:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6060 states. [2020-10-12 11:36:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 7602 transitions. [2020-10-12 11:36:28,006 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 7602 transitions. Word has length 856 [2020-10-12 11:36:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:28,007 INFO L479 AbstractCegarLoop]: Abstraction has 6060 states and 7602 transitions. [2020-10-12 11:36:28,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:36:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 7602 transitions. [2020-10-12 11:36:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2020-10-12 11:36:28,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:28,028 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:28,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:36:28,029 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:28,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:28,030 INFO L82 PathProgramCache]: Analyzing trace with hash 891414557, now seen corresponding path program 1 times [2020-10-12 11:36:28,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:28,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333508817] [2020-10-12 11:36:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:33,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:33,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 879 [2020-10-12 11:36:33,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:36:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 11:36:33,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:36:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-12 11:36:33,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 568 [2020-10-12 11:36:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:34,682 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-12 11:36:34,824 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-12 11:36:34,980 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-12 11:36:35,270 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 50 [2020-10-12 11:36:35,557 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 48 [2020-10-12 11:36:35,708 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-10-12 11:36:35,856 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-12 11:36:36,042 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2020-10-12 11:36:36,306 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 48 [2020-10-12 11:36:36,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:36:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:36,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:36,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:36:36,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:36,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:36:36,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:36,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:36:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:36,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:36,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:36:36,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:36:36,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:36,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:36:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:36,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:36:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 11:36:36,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:36:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:36:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 11:36:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:36,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:36,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:36:36,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 11:36:36,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:36:36,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 11:36:36,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:36:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:36:36,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:36:36,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 11:36:36,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:36:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 74 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 11:36:41,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333508817] [2020-10-12 11:36:41,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:36:41,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 11:36:41,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158189202] [2020-10-12 11:36:41,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:36:41,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:36:41,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:36:41,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:36:41,499 INFO L87 Difference]: Start difference. First operand 6060 states and 7602 transitions. Second operand 17 states. [2020-10-12 11:36:42,137 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 11:36:42,307 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-12 11:36:43,346 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2020-10-12 11:36:44,085 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-12 11:36:47,027 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-12 11:36:47,548 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 11:36:47,731 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 11:36:50,668 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2020-10-12 11:36:51,297 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2020-10-12 11:36:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:36:56,965 INFO L93 Difference]: Finished difference Result 11966 states and 15635 transitions. [2020-10-12 11:36:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:36:56,967 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 859 [2020-10-12 11:36:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:36:56,986 INFO L225 Difference]: With dead ends: 11966 [2020-10-12 11:36:56,986 INFO L226 Difference]: Without dead ends: 6639 [2020-10-12 11:36:56,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:36:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2020-10-12 11:36:57,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6635. [2020-10-12 11:36:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6635 states. [2020-10-12 11:36:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 8192 transitions. [2020-10-12 11:36:57,115 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 8192 transitions. Word has length 859 [2020-10-12 11:36:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:36:57,116 INFO L479 AbstractCegarLoop]: Abstraction has 6635 states and 8192 transitions. [2020-10-12 11:36:57,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:36:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 8192 transitions. [2020-10-12 11:36:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-10-12 11:36:57,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:36:57,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:36:57,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:36:57,138 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:36:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:36:57,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1164808319, now seen corresponding path program 1 times [2020-10-12 11:36:57,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:36:57,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754355113] [2020-10-12 11:36:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:36:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:36:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:57,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:36:59,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 884 [2020-10-12 11:37:02,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:37:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-12 11:37:02,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:37:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:37:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 11:37:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:02,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:37:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:37:02,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:37:02,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:37:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:37:02,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:37:02,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:02,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:37:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:37:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:02,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 11:37:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 11:37:02,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:37:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:37:02,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:02,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:37:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 11:37:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:02,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:37:02,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:37:02,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:37:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:37:02,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:37:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:37:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:37:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:37:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:37:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 93 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:37:03,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754355113] [2020-10-12 11:37:03,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:37:03,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:37:03,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924098539] [2020-10-12 11:37:03,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:37:03,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:37:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:37:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:37:03,044 INFO L87 Difference]: Start difference. First operand 6635 states and 8192 transitions. Second operand 8 states. [2020-10-12 11:37:15,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:37:15,166 INFO L93 Difference]: Finished difference Result 16041 states and 20891 transitions. [2020-10-12 11:37:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:37:15,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 864 [2020-10-12 11:37:15,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:37:15,208 INFO L225 Difference]: With dead ends: 16041 [2020-10-12 11:37:15,208 INFO L226 Difference]: Without dead ends: 10139 [2020-10-12 11:37:15,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:37:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10139 states. [2020-10-12 11:37:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10139 to 10117. [2020-10-12 11:37:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10117 states. [2020-10-12 11:37:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10117 states to 10117 states and 12385 transitions. [2020-10-12 11:37:15,419 INFO L78 Accepts]: Start accepts. Automaton has 10117 states and 12385 transitions. Word has length 864 [2020-10-12 11:37:15,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:37:15,420 INFO L479 AbstractCegarLoop]: Abstraction has 10117 states and 12385 transitions. [2020-10-12 11:37:15,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:37:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 10117 states and 12385 transitions. [2020-10-12 11:37:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2020-10-12 11:37:15,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:37:15,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:37:15,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:37:15,450 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:37:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:37:15,451 INFO L82 PathProgramCache]: Analyzing trace with hash 782671571, now seen corresponding path program 1 times [2020-10-12 11:37:15,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:37:15,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617680097] [2020-10-12 11:37:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:37:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:37:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:37:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking...