/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 SingleStatement --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:15:13,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:15:13,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:15:13,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:15:13,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:15:13,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:15:13,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:15:13,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:15:13,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:15:13,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:15:13,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:15:13,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:15:13,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:15:13,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:15:13,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:15:13,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:15:13,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:15:13,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:15:13,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:15:13,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:15:13,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:15:13,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:15:13,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:15:13,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:15:13,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:15:13,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:15:13,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:15:13,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:15:13,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:15:13,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:15:13,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:15:13,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:15:13,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:15:13,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:15:13,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:15:13,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:15:13,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:15:13,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:15:13,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:15:13,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:15:13,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:15:13,759 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 [2020-09-25 11:15:13,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:15:13,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:15:13,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:15:13,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:15:13,786 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:15:13,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:15:13,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:15:13,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:15:13,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:15:13,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:15:13,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:15:13,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:15:13,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:15:13,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:15:13,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:15:13,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:15:13,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:15:13,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:15:13,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:15:13,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:15:13,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:15:13,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:15:13,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:15:13,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:15:13,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:15:13,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:15:13,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:15:13,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:15:13,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:15:13,791 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 -> SingleStatement 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:15:14,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:15:14,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:15:14,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:15:14,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:15:14,258 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:15:14,260 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 11:15:14,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/119d8d243/57bde99dbcac4b509bca59edd1ac689d/FLAG4be435717 [2020-09-25 11:15:14,987 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:15:14,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 11:15:15,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/119d8d243/57bde99dbcac4b509bca59edd1ac689d/FLAG4be435717 [2020-09-25 11:15:15,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/119d8d243/57bde99dbcac4b509bca59edd1ac689d [2020-09-25 11:15:15,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:15:15,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:15:15,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:15,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:15:15,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:15:15,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:15" (1/1) ... [2020-09-25 11:15:15,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:15, skipping insertion in model container [2020-09-25 11:15:15,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:15:15" (1/1) ... [2020-09-25 11:15:15,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:15:15,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:15:15,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:15,823 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:15:16,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:15:16,086 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:15:16,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16 WrapperNode [2020-09-25 11:15:16,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:15:16,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:15:16,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:15:16,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:15:16,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (1/1) ... [2020-09-25 11:15:16,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (1/1) ... [2020-09-25 11:15:16,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (1/1) ... [2020-09-25 11:15:16,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (1/1) ... [2020-09-25 11:15:16,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (1/1) ... [2020-09-25 11:15:16,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (1/1) ... [2020-09-25 11:15:16,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (1/1) ... [2020-09-25 11:15:16,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:15:16,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:15:16,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:15:16,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:15:16,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (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 [2020-09-25 11:15:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:15:16,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:15:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:15:16,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:15:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:15:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:15:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:15:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:15:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:15:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:15:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:15:17,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:15:17,659 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:15:17,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:17 BoogieIcfgContainer [2020-09-25 11:15:17,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:15:17,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:15:17,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:15:17,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:15:17,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:15:15" (1/3) ... [2020-09-25 11:15:17,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:17, skipping insertion in model container [2020-09-25 11:15:17,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:15:16" (2/3) ... [2020-09-25 11:15:17,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:15:17, skipping insertion in model container [2020-09-25 11:15:17,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:15:17" (3/3) ... [2020-09-25 11:15:17,693 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-25 11:15:17,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:15:17,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:15:17,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:15:17,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:15:17,782 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:15:17,782 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:15:17,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:15:17,782 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:15:17,782 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:15:17,782 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:15:17,783 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:15:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:15:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 11:15:17,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:17,845 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] [2020-09-25 11:15:17,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:17,856 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-25 11:15:17,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:17,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 11:15:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:20,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:20,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:23,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:23,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 11:15:23,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:15:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 11:15:23,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:23,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:15:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:15:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:15:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:23,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:23,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:15:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:23,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:15:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:23,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 11:15:23,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:15:23,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:15:23,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646466769] [2020-09-25 11:15:23,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:23,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:23,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:23,452 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 11:15:25,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:25,976 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 11:15:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:15:25,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-09-25 11:15:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:26,005 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 11:15:26,005 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 11:15:26,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 11:15:26,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 11:15:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 11:15:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 11:15:26,124 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 119 [2020-09-25 11:15:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:26,125 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 11:15:26,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 11:15:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 11:15:26,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:26,140 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] [2020-09-25 11:15:26,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:15:26,140 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash 165606425, now seen corresponding path program 1 times [2020-09-25 11:15:26,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:26,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847809723] [2020-09-25 11:15:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:30,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 11:15:30,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:15:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3876 [2020-09-25 11:15:30,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:30,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:30,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 11:15:30,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:15:30,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:30,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:30,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:30,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:15:30,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:30,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:30,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:30,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:15:30,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:30,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:15:30,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:15:30,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:30,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:30,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:30,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:15:30,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:30,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847809723] [2020-09-25 11:15:30,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:30,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:30,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759946416] [2020-09-25 11:15:30,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:30,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:30,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:30,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:30,335 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 11:15:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:32,777 INFO L93 Difference]: Finished difference Result 1677 states and 2175 transitions. [2020-09-25 11:15:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:32,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 11:15:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:32,788 INFO L225 Difference]: With dead ends: 1677 [2020-09-25 11:15:32,788 INFO L226 Difference]: Without dead ends: 1086 [2020-09-25 11:15:32,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:15:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-09-25 11:15:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 881. [2020-09-25 11:15:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 11:15:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 11:15:32,836 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 145 [2020-09-25 11:15:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:32,837 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 11:15:32,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 11:15:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 11:15:32,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:32,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:32,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:32,845 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1018685367, now seen corresponding path program 1 times [2020-09-25 11:15:32,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:32,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471446616] [2020-09-25 11:15:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:33,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:37,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 11:15:37,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4479 [2020-09-25 11:15:37,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:37,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:37,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:15:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:15:37,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:15:37,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:37,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:37,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:15:37,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:37,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:37,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:15:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:37,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:37,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:37,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:37,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:15:37,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 11:15:37,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:37,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:15:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:15:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:38,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471446616] [2020-09-25 11:15:38,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:38,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:15:38,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641743178] [2020-09-25 11:15:38,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:15:38,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:38,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:15:38,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:15:38,116 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 11 states. [2020-09-25 11:15:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:42,589 INFO L93 Difference]: Finished difference Result 2149 states and 2842 transitions. [2020-09-25 11:15:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:15:42,596 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 153 [2020-09-25 11:15:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:42,602 INFO L225 Difference]: With dead ends: 2149 [2020-09-25 11:15:42,603 INFO L226 Difference]: Without dead ends: 1017 [2020-09-25 11:15:42,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:15:42,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-09-25 11:15:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 853. [2020-09-25 11:15:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-09-25 11:15:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 997 transitions. [2020-09-25 11:15:42,634 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 997 transitions. Word has length 153 [2020-09-25 11:15:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:42,635 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 997 transitions. [2020-09-25 11:15:42,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:15:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 997 transitions. [2020-09-25 11:15:42,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 11:15:42,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:42,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:42,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:42,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:42,640 INFO L82 PathProgramCache]: Analyzing trace with hash 278855818, now seen corresponding path program 1 times [2020-09-25 11:15:42,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:42,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693414026] [2020-09-25 11:15:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:42,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:42,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:47,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:47,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 11:15:47,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:15:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:15:47,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:47,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:15:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:15:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:15:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:47,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:47,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:47,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:47,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:47,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:47,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:15:47,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:47,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:47,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:47,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:47,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:15:47,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:47,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:48,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:48,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:15:48,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:48,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 11:15:48,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:48,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:15:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:48,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:15:48,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:48,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693414026] [2020-09-25 11:15:48,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:48,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:15:48,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239256059] [2020-09-25 11:15:48,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:15:48,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:48,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:15:48,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:15:48,238 INFO L87 Difference]: Start difference. First operand 853 states and 997 transitions. Second operand 11 states. [2020-09-25 11:15:52,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:52,105 INFO L93 Difference]: Finished difference Result 1267 states and 1421 transitions. [2020-09-25 11:15:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:15:52,112 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-09-25 11:15:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:52,121 INFO L225 Difference]: With dead ends: 1267 [2020-09-25 11:15:52,121 INFO L226 Difference]: Without dead ends: 842 [2020-09-25 11:15:52,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:15:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2020-09-25 11:15:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 832. [2020-09-25 11:15:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-09-25 11:15:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 968 transitions. [2020-09-25 11:15:52,161 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 968 transitions. Word has length 157 [2020-09-25 11:15:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:52,162 INFO L479 AbstractCegarLoop]: Abstraction has 832 states and 968 transitions. [2020-09-25 11:15:52,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:15:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 968 transitions. [2020-09-25 11:15:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 11:15:52,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:52,166 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:52,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:15:52,167 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:52,167 INFO L82 PathProgramCache]: Analyzing trace with hash -344439174, now seen corresponding path program 1 times [2020-09-25 11:15:52,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:52,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760166253] [2020-09-25 11:15:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:55,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 11:15:57,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:15:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:15:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:15:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:15:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 11:15:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:15:57,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:57,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:15:57,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:57,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:15:57,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:15:57,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:15:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:57,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:57,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 11:15:57,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:57,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 11:15:57,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:57,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:15:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:15:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:15:57,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760166253] [2020-09-25 11:15:57,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:57,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:15:57,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27059157] [2020-09-25 11:15:57,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:15:57,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:57,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:15:57,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:15:57,835 INFO L87 Difference]: Start difference. First operand 832 states and 968 transitions. Second operand 11 states. [2020-09-25 11:16:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:16:02,591 INFO L93 Difference]: Finished difference Result 2715 states and 3412 transitions. [2020-09-25 11:16:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:16:02,592 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-09-25 11:16:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:16:02,599 INFO L225 Difference]: With dead ends: 2715 [2020-09-25 11:16:02,600 INFO L226 Difference]: Without dead ends: 1649 [2020-09-25 11:16:02,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:16:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2020-09-25 11:16:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1595. [2020-09-25 11:16:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2020-09-25 11:16:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 1779 transitions. [2020-09-25 11:16:02,647 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 1779 transitions. Word has length 180 [2020-09-25 11:16:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:16:02,647 INFO L479 AbstractCegarLoop]: Abstraction has 1595 states and 1779 transitions. [2020-09-25 11:16:02,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:16:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 1779 transitions. [2020-09-25 11:16:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 11:16:02,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:16:02,653 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:16:02,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:16:02,654 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:16:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:16:02,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1577445626, now seen corresponding path program 1 times [2020-09-25 11:16:02,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:16:02,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206766323] [2020-09-25 11:16:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:16:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:07,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:07,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 11:16:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:16:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:16:07,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:07,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 11:16:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:16:07,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-09-25 11:16:07,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:16:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:07,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:07,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:07,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:16:07,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:07,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:16:07,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:07,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:07,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:16:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:16:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:16:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:16:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:16:08,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:16:08,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:16:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:16:08,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:16:08,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:16:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:16:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:16:08,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:16:08,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:16:08,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:16:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:16:08,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:16:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking...