/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=0.3 --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/Problem01_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:25,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:25,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:25,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:25,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:25,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:25,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:25,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:25,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:25,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:25,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:25,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:25,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:25,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:25,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:25,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:25,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:25,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:25,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:25,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:25,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:25,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:25,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:25,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:25,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:25,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:25,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:25,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:25,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:25,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:25,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:25,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:25,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:25,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:25,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:25,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:25,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:25,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:25,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:25,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:25,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:25,701 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 12:22:25,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:25,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:25,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:25,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:25,750 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:25,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:25,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:25,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:25,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:25,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:25,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:25,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:25,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:25,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:25,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:25,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:25,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:25,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:25,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:25,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:25,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:25,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:25,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:25,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:25,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:25,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:25,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:25,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:25,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:25,756 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:22:26,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:26,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:26,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:26,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:26,236 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:26,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 12:22:26,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10990b8e2/b26624718f5d45d7ae5b381b78fad8f9/FLAGa10a63b4a [2020-09-25 12:22:26,995 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:26,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 12:22:27,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10990b8e2/b26624718f5d45d7ae5b381b78fad8f9/FLAGa10a63b4a [2020-09-25 12:22:27,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10990b8e2/b26624718f5d45d7ae5b381b78fad8f9 [2020-09-25 12:22:27,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:27,244 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:27,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:27,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:27,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:27,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:27" (1/1) ... [2020-09-25 12:22:27,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:27, skipping insertion in model container [2020-09-25 12:22:27,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:27" (1/1) ... [2020-09-25 12:22:27,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:27,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:27,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:27,854 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:28,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:28,086 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:28,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28 WrapperNode [2020-09-25 12:22:28,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:28,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:28,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:28,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:28,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (1/1) ... [2020-09-25 12:22:28,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:28,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:28,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:28,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:28,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (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 12:22:28,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:28,324 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:28,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:29,703 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:29,704 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:29,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:29 BoogieIcfgContainer [2020-09-25 12:22:29,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:29,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:29,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:29,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:29,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:27" (1/3) ... [2020-09-25 12:22:29,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:29, skipping insertion in model container [2020-09-25 12:22:29,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:28" (2/3) ... [2020-09-25 12:22:29,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f7315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:29, skipping insertion in model container [2020-09-25 12:22:29,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:29" (3/3) ... [2020-09-25 12:22:29,723 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-25 12:22:29,735 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:29,746 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:29,769 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:29,804 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:29,805 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:29,805 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:29,805 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:29,805 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:29,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:29,806 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:29,806 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:29,843 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:22:29,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:29,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:29,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:29,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-25 12:22:29,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:29,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766651903] [2020-09-25 12:22:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:22:35,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:22:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:22:35,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:35,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:22:35,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 12:22:35,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:22:35,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:22:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:22:35,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:35,651 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 12:22:35,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766651903] [2020-09-25 12:22:35,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:35,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:22:35,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837571784] [2020-09-25 12:22:35,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:35,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:35,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:35,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:35,685 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:22:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:37,884 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 12:22:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:37,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 12:22:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:37,920 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 12:22:37,920 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 12:22:37,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 12:22:37,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 12:22:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 12:22:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 12:22:38,052 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-25 12:22:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:38,056 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 12:22:38,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:38,056 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 12:22:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 12:22:38,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:38,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:38,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:38,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:38,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-25 12:22:38,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:38,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953378076] [2020-09-25 12:22:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:43,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 12:22:43,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:22:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 12:22:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:43,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:43,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:43,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:43,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:43,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:22:43,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:43,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:22:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:43,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:43,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:43,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:22:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 12:22:43,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:43,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:22:43,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:43,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953378076] [2020-09-25 12:22:43,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:43,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:22:43,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490680003] [2020-09-25 12:22:43,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:22:43,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:43,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:22:43,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:22:43,961 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 13 states. [2020-09-25 12:22:44,228 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-09-25 12:22:44,740 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-09-25 12:22:45,816 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-09-25 12:22:46,232 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-09-25 12:22:49,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:49,706 INFO L93 Difference]: Finished difference Result 2302 states and 3128 transitions. [2020-09-25 12:22:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 12:22:49,707 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-09-25 12:22:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:49,720 INFO L225 Difference]: With dead ends: 2302 [2020-09-25 12:22:49,721 INFO L226 Difference]: Without dead ends: 1326 [2020-09-25 12:22:49,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=245, Invalid=457, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:22:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-09-25 12:22:49,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1283. [2020-09-25 12:22:49,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-09-25 12:22:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1514 transitions. [2020-09-25 12:22:49,810 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1514 transitions. Word has length 163 [2020-09-25 12:22:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:49,810 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 1514 transitions. [2020-09-25 12:22:49,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:22:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1514 transitions. [2020-09-25 12:22:49,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 12:22:49,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:49,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:49,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:49,825 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:49,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1982265959, now seen corresponding path program 1 times [2020-09-25 12:22:49,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:49,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753152568] [2020-09-25 12:22:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:54,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:54,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:22:54,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:22:54,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:54,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:54,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 12:22:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 12:22:54,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:55,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:55,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:55,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:22:55,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:55,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:55,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:55,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:55,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 12:22:55,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:55,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:22:55,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:55,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:55,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:55,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:22:55,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:55,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753152568] [2020-09-25 12:22:55,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:55,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:55,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919522349] [2020-09-25 12:22:55,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:55,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:55,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:55,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:55,204 INFO L87 Difference]: Start difference. First operand 1283 states and 1514 transitions. Second operand 5 states. [2020-09-25 12:22:57,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:57,255 INFO L93 Difference]: Finished difference Result 3513 states and 4258 transitions. [2020-09-25 12:22:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:57,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 12:22:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:57,275 INFO L225 Difference]: With dead ends: 3513 [2020-09-25 12:22:57,275 INFO L226 Difference]: Without dead ends: 2254 [2020-09-25 12:22:57,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-09-25 12:22:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2006. [2020-09-25 12:22:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-09-25 12:22:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2404 transitions. [2020-09-25 12:22:57,376 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2404 transitions. Word has length 185 [2020-09-25 12:22:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:57,378 INFO L479 AbstractCegarLoop]: Abstraction has 2006 states and 2404 transitions. [2020-09-25 12:22:57,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2404 transitions. [2020-09-25 12:22:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 12:22:57,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:57,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:57,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:57,392 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:57,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:57,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1218049893, now seen corresponding path program 1 times [2020-09-25 12:22:57,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:57,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843655744] [2020-09-25 12:22:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:57,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:02,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 12:23:02,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:23:02,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:02,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 12:23:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 12:23:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:02,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:02,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:02,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:02,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:02,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:02,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:02,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:02,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:02,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:02,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:02,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 12:23:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 12:23:02,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:23:02,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:02,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843655744] [2020-09-25 12:23:02,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:02,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:02,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271420309] [2020-09-25 12:23:02,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:02,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:02,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:02,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:02,833 INFO L87 Difference]: Start difference. First operand 2006 states and 2404 transitions. Second operand 5 states. [2020-09-25 12:23:04,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:04,726 INFO L93 Difference]: Finished difference Result 2899 states and 3471 transitions. [2020-09-25 12:23:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:04,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 12:23:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:04,786 INFO L225 Difference]: With dead ends: 2899 [2020-09-25 12:23:04,787 INFO L226 Difference]: Without dead ends: 2897 [2020-09-25 12:23:04,788 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 12:23:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2020-09-25 12:23:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2300. [2020-09-25 12:23:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2300 states. [2020-09-25 12:23:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 2805 transitions. [2020-09-25 12:23:04,872 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 2805 transitions. Word has length 191 [2020-09-25 12:23:04,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:04,873 INFO L479 AbstractCegarLoop]: Abstraction has 2300 states and 2805 transitions. [2020-09-25 12:23:04,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 2805 transitions. [2020-09-25 12:23:04,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 12:23:04,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:04,885 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:04,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:04,885 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:04,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:04,886 INFO L82 PathProgramCache]: Analyzing trace with hash 532164668, now seen corresponding path program 1 times [2020-09-25 12:23:04,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:04,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194793663] [2020-09-25 12:23:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:08,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:09,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:09,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 12:23:09,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:23:09,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:23:09,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:09,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 12:23:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 12:23:09,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:23:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:10,744 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-09-25 12:23:11,012 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-09-25 12:23:11,315 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-09-25 12:23:11,635 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-09-25 12:23:11,940 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-09-25 12:23:12,224 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2020-09-25 12:23:12,544 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2020-09-25 12:23:12,845 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-09-25 12:23:13,142 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2020-09-25 12:23:13,423 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 32 [2020-09-25 12:23:13,602 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 29 [2020-09-25 12:23:13,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:13,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:13,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:13,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:23:13,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:13,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:13,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:13,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:23:13,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:13,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:23:13,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:13,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:13,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:13,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 12:23:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:13,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:13,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:23:13,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:23:13,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:13,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:23:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:13,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:23:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:14,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 12:23:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:14,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:23:14,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 12:23:14,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:14,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:23:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 56 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:23:14,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194793663] [2020-09-25 12:23:14,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:14,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 12:23:14,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616502820] [2020-09-25 12:23:14,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 12:23:14,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:14,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 12:23:14,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-09-25 12:23:14,593 INFO L87 Difference]: Start difference. First operand 2300 states and 2805 transitions. Second operand 26 states.