/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:11,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:11,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:11,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:11,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:11,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:11,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:11,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:11,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:11,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:11,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:11,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:11,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:11,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:11,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:11,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:11,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:11,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:11,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:11,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:11,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:11,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:11,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:11,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:11,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:11,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:11,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:11,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:11,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:11,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:11,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:11,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:11,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:11,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:11,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:11,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:11,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:11,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:11,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:11,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:11,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:11,728 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 09:04:11,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:11,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:11,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:11,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:11,755 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:11,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:11,756 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:11,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:11,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:11,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:11,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:11,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:11,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:11,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:11,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:11,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:11,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:11,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:11,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:11,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:11,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:11,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:11,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:11,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:11,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:11,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:11,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:11,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:11,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:11,760 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:04:12,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:12,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:12,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:12,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:12,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:12,263 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 09:04:12,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfeb428b9/0eec550721a44bbd9e0232cdbeda02f6/FLAG92bc8ef6e [2020-09-25 09:04:13,030 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:13,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 09:04:13,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfeb428b9/0eec550721a44bbd9e0232cdbeda02f6/FLAG92bc8ef6e [2020-09-25 09:04:13,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfeb428b9/0eec550721a44bbd9e0232cdbeda02f6 [2020-09-25 09:04:13,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:13,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:13,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:13,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:13,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:13,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:13" (1/1) ... [2020-09-25 09:04:13,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544b342c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:13, skipping insertion in model container [2020-09-25 09:04:13,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:13" (1/1) ... [2020-09-25 09:04:13,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:13,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:13,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:13,907 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:14,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:14,143 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:14,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14 WrapperNode [2020-09-25 09:04:14,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:14,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:14,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:14,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:14,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (1/1) ... [2020-09-25 09:04:14,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (1/1) ... [2020-09-25 09:04:14,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (1/1) ... [2020-09-25 09:04:14,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (1/1) ... [2020-09-25 09:04:14,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (1/1) ... [2020-09-25 09:04:14,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (1/1) ... [2020-09-25 09:04:14,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (1/1) ... [2020-09-25 09:04:14,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:14,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:14,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:14,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:14,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (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 09:04:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:15,805 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:15,805 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:15,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:15 BoogieIcfgContainer [2020-09-25 09:04:15,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:15,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:15,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:15,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:15,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:13" (1/3) ... [2020-09-25 09:04:15,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f27a41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:15, skipping insertion in model container [2020-09-25 09:04:15,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:14" (2/3) ... [2020-09-25 09:04:15,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f27a41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:15, skipping insertion in model container [2020-09-25 09:04:15,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:15" (3/3) ... [2020-09-25 09:04:15,827 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-25 09:04:15,839 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:15,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:15,880 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:15,924 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:15,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:15,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:15,925 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:15,925 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:15,925 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:15,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:15,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:15,959 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:04:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 09:04:15,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:15,982 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] [2020-09-25 09:04:15,983 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:15,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-25 09:04:16,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:16,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879394891] [2020-09-25 09:04:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:16,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:18,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:19,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 09:04:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:04:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:04:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:21,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:04:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:04:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:04:21,656 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-09-25 09:04:21,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:04:21,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:21,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:21,789 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 09:04:21,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879394891] [2020-09-25 09:04:21,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:21,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:04:21,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256117296] [2020-09-25 09:04:21,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:04:21,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:21,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:04:21,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:04:21,827 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:04:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:24,144 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 09:04:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:04:24,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-25 09:04:24,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:24,196 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 09:04:24,196 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 09:04:24,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 09:04:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 09:04:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 09:04:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 09:04:24,319 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 130 [2020-09-25 09:04:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:24,320 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 09:04:24,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:04:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 09:04:24,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 09:04:24,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:24,333 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:04:24,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:24,334 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:24,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:24,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1975471173, now seen corresponding path program 1 times [2020-09-25 09:04:24,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:24,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185307255] [2020-09-25 09:04:24,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:25,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:27,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:27,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:29,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 09:04:29,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:04:29,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:04:29,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:29,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:04:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:04:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:29,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:29,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:29,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:04:29,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:29,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:29,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:29,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:04:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:04:29,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:29,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:29,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:29,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:29,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 09:04:29,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:29,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:29,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:29,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:29,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185307255] [2020-09-25 09:04:29,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:29,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:29,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874126853] [2020-09-25 09:04:29,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:29,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:29,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:29,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:29,797 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 09:04:31,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:31,847 INFO L93 Difference]: Finished difference Result 1785 states and 2268 transitions. [2020-09-25 09:04:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:31,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 09:04:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:31,857 INFO L225 Difference]: With dead ends: 1785 [2020-09-25 09:04:31,857 INFO L226 Difference]: Without dead ends: 1074 [2020-09-25 09:04:31,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:31,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-25 09:04:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1042. [2020-09-25 09:04:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-09-25 09:04:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1291 transitions. [2020-09-25 09:04:31,914 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1291 transitions. Word has length 148 [2020-09-25 09:04:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:31,914 INFO L479 AbstractCegarLoop]: Abstraction has 1042 states and 1291 transitions. [2020-09-25 09:04:31,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:31,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1291 transitions. [2020-09-25 09:04:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 09:04:31,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:31,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:31,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:31,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:31,927 INFO L82 PathProgramCache]: Analyzing trace with hash -240509204, now seen corresponding path program 1 times [2020-09-25 09:04:31,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:31,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671655494] [2020-09-25 09:04:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:36,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:36,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 09:04:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:04:36,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:36,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 09:04:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:04:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:37,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:37,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:37,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:37,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:04:37,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:37,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:37,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:37,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:04:37,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:04:37,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:37,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:04:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:37,224 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 09:04:37,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671655494] [2020-09-25 09:04:37,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:37,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:37,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408888944] [2020-09-25 09:04:37,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:37,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:37,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:37,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:37,231 INFO L87 Difference]: Start difference. First operand 1042 states and 1291 transitions. Second operand 5 states. [2020-09-25 09:04:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:39,241 INFO L93 Difference]: Finished difference Result 2688 states and 3451 transitions. [2020-09-25 09:04:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:39,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 09:04:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:39,248 INFO L225 Difference]: With dead ends: 2688 [2020-09-25 09:04:39,248 INFO L226 Difference]: Without dead ends: 981 [2020-09-25 09:04:39,255 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 09:04:39,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-25 09:04:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 969. [2020-09-25 09:04:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-09-25 09:04:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1185 transitions. [2020-09-25 09:04:39,293 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1185 transitions. Word has length 164 [2020-09-25 09:04:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:39,293 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1185 transitions. [2020-09-25 09:04:39,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1185 transitions. [2020-09-25 09:04:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 09:04:39,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:39,299 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:39,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:39,299 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:39,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1330770896, now seen corresponding path program 1 times [2020-09-25 09:04:39,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:39,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079482287] [2020-09-25 09:04:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:39,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:44,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 09:04:44,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:04:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:04:44,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:44,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:04:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 09:04:44,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:04:44,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:44,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:44,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:44,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:04:44,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:44,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:44,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:44,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:44,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:44,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:44,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:04:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 09:04:44,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:44,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:04:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:04:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:44,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079482287] [2020-09-25 09:04:44,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:44,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:04:44,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402375282] [2020-09-25 09:04:44,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:04:44,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:44,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:04:44,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:44,958 INFO L87 Difference]: Start difference. First operand 969 states and 1185 transitions. Second operand 8 states. [2020-09-25 09:04:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:47,774 INFO L93 Difference]: Finished difference Result 3040 states and 3967 transitions. [2020-09-25 09:04:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:47,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-09-25 09:04:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:47,786 INFO L225 Difference]: With dead ends: 3040 [2020-09-25 09:04:47,786 INFO L226 Difference]: Without dead ends: 2000 [2020-09-25 09:04:47,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:04:47,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2020-09-25 09:04:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1948. [2020-09-25 09:04:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-09-25 09:04:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2344 transitions. [2020-09-25 09:04:47,871 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2344 transitions. Word has length 168 [2020-09-25 09:04:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:47,871 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2344 transitions. [2020-09-25 09:04:47,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2344 transitions. [2020-09-25 09:04:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 09:04:47,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:47,883 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:04:47,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:47,883 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:47,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:47,884 INFO L82 PathProgramCache]: Analyzing trace with hash 935964046, now seen corresponding path program 1 times [2020-09-25 09:04:47,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:47,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470726674] [2020-09-25 09:04:47,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 09:04:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:04:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-09-25 09:04:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:52,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 09:04:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 09:04:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:53,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:53,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:53,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:53,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:04:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:53,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:04:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:53,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:53,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:04:53,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:53,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:53,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:53,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:04:53,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:53,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:04:53,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:53,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:53,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 09:04:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:04:53,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470726674] [2020-09-25 09:04:53,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:53,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:53,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33819777] [2020-09-25 09:04:53,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:53,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:53,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:53,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:53,223 INFO L87 Difference]: Start difference. First operand 1948 states and 2344 transitions. Second operand 5 states. [2020-09-25 09:04:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:55,151 INFO L93 Difference]: Finished difference Result 5013 states and 6231 transitions. [2020-09-25 09:04:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:55,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-09-25 09:04:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:55,166 INFO L225 Difference]: With dead ends: 5013 [2020-09-25 09:04:55,166 INFO L226 Difference]: Without dead ends: 3087 [2020-09-25 09:04:55,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2020-09-25 09:04:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3018. [2020-09-25 09:04:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3018 states. [2020-09-25 09:04:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3599 transitions. [2020-09-25 09:04:55,265 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3599 transitions. Word has length 192 [2020-09-25 09:04:55,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:55,266 INFO L479 AbstractCegarLoop]: Abstraction has 3018 states and 3599 transitions. [2020-09-25 09:04:55,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:55,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3599 transitions. [2020-09-25 09:04:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 09:04:55,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:55,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:55,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:55,279 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:55,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash 12118133, now seen corresponding path program 1 times [2020-09-25 09:04:55,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:55,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288842723] [2020-09-25 09:04:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 09:05:00,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:05:00,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:05:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 09:05:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:05:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:05:00,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:05:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:05:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 09:05:00,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 09:05:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:05:00,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 09:05:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 09:05:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 09:05:00,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288842723] [2020-09-25 09:05:00,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:00,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:00,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890748433] [2020-09-25 09:05:00,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:00,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:00,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:00,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:00,806 INFO L87 Difference]: Start difference. First operand 3018 states and 3599 transitions. Second operand 8 states.