/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=LOWLEXORDER --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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:24,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:24,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:24,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:24,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:24,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:24,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:24,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:24,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:24,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:24,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:24,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:24,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:24,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:24,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:24,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:24,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:24,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:24,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:24,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:24,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:24,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:24,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:24,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:24,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:24,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:24,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:24,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:24,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:24,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:42:24,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:42:24,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:42:24,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:42:24,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:42:24,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:42:24,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:42:24,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:42:24,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:42:24,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:24,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:24,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:24,725 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 [2020-09-24 21:42:24,753 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:24,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:24,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:24,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:24,755 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:24,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:24,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:24,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:24,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:24,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:24,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:24,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:24,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:24,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:24,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:24,761 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:24,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:24,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:24,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:24,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:24,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:24,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:24,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:24,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:24,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:24,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:24,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:24,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:24,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:24,766 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:42:25,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:25,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:25,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:25,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:25,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:25,293 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-24 21:42:25,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/999121bd1/6f31ba65fd694e299b94c8a42d687f73/FLAGde99deb7b [2020-09-24 21:42:26,100 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:26,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-24 21:42:26,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/999121bd1/6f31ba65fd694e299b94c8a42d687f73/FLAGde99deb7b [2020-09-24 21:42:26,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/999121bd1/6f31ba65fd694e299b94c8a42d687f73 [2020-09-24 21:42:26,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:26,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:26,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:26,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:26,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:26,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:26" (1/1) ... [2020-09-24 21:42:26,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:26, skipping insertion in model container [2020-09-24 21:42:26,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:26" (1/1) ... [2020-09-24 21:42:26,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:26,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:26,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:26,993 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:27,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:27,135 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:27,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27 WrapperNode [2020-09-24 21:42:27,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:27,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:27,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:27,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:27,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (1/1) ... [2020-09-24 21:42:27,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (1/1) ... [2020-09-24 21:42:27,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (1/1) ... [2020-09-24 21:42:27,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (1/1) ... [2020-09-24 21:42:27,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (1/1) ... [2020-09-24 21:42:27,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (1/1) ... [2020-09-24 21:42:27,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (1/1) ... [2020-09-24 21:42:27,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:27,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:27,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:27,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:27,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (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 [2020-09-24 21:42:27,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:27,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:27,363 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:27,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:28,839 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:28,839 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:28,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:28 BoogieIcfgContainer [2020-09-24 21:42:28,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:28,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:28,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:28,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:28,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:26" (1/3) ... [2020-09-24 21:42:28,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cce9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:28, skipping insertion in model container [2020-09-24 21:42:28,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:27" (2/3) ... [2020-09-24 21:42:28,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cce9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:28, skipping insertion in model container [2020-09-24 21:42:28,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:28" (3/3) ... [2020-09-24 21:42:28,859 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2020-09-24 21:42:28,871 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:28,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:28,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:28,945 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:28,945 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:28,945 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:28,945 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:28,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:28,946 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:28,946 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:28,946 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 21:42:29,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:29,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:29,005 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1105966209, now seen corresponding path program 1 times [2020-09-24 21:42:29,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:29,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121940282] [2020-09-24 21:42:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:29,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:29,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:34,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:34,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 21:42:34,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:42:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:42:34,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:34,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:42:34,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:35,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:35,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:35,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:35,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 21:42:35,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:35,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:35,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121940282] [2020-09-24 21:42:35,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:35,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:42:35,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891743375] [2020-09-24 21:42:35,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:42:35,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:35,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:42:35,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:42:35,405 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:42:36,101 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-09-24 21:42:36,338 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-24 21:42:36,970 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-09-24 21:42:37,376 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-24 21:42:38,466 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 21:42:38,661 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-09-24 21:42:38,988 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-09-24 21:42:39,769 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-24 21:42:40,182 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-24 21:42:40,410 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:42:41,467 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-09-24 21:42:41,909 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-09-24 21:42:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:44,513 INFO L93 Difference]: Finished difference Result 1871 states and 2663 transitions. [2020-09-24 21:42:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:44,515 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-09-24 21:42:44,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:44,551 INFO L225 Difference]: With dead ends: 1871 [2020-09-24 21:42:44,551 INFO L226 Difference]: Without dead ends: 1243 [2020-09-24 21:42:44,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:42:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2020-09-24 21:42:44,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 1076. [2020-09-24 21:42:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:42:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1295 transitions. [2020-09-24 21:42:44,696 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1295 transitions. Word has length 150 [2020-09-24 21:42:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:44,697 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1295 transitions. [2020-09-24 21:42:44,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1295 transitions. [2020-09-24 21:42:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 21:42:44,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:44,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:44,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:44,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash 93952890, now seen corresponding path program 1 times [2020-09-24 21:42:44,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:44,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030617255] [2020-09-24 21:42:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:49,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 21:42:49,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:42:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:42:49,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:42:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:42:49,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:50,493 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-09-24 21:42:50,691 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-09-24 21:42:50,898 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-09-24 21:42:51,114 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-09-24 21:42:51,332 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-09-24 21:42:51,518 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-09-24 21:42:51,764 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2020-09-24 21:42:51,986 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 33 [2020-09-24 21:42:52,131 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 27 [2020-09-24 21:42:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:52,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:52,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:52,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:52,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:52,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 21:42:52,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:52,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:52,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:52,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:52,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:52,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:52,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:42:52,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:52,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:52,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030617255] [2020-09-24 21:42:52,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:52,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 21:42:52,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473354956] [2020-09-24 21:42:52,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 21:42:52,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:52,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 21:42:52,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:42:52,896 INFO L87 Difference]: Start difference. First operand 1076 states and 1295 transitions. Second operand 24 states. [2020-09-24 21:42:53,605 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 21:42:53,934 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-09-24 21:42:54,363 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-09-24 21:42:56,515 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-09-24 21:42:57,244 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-09-24 21:42:57,955 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-24 21:42:58,373 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 21:42:58,710 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2020-09-24 21:42:59,015 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-09-24 21:42:59,823 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2020-09-24 21:43:00,204 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2020-09-24 21:43:00,620 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-09-24 21:43:00,921 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-09-24 21:43:01,148 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 21:43:01,496 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2020-09-24 21:43:02,082 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-09-24 21:43:02,413 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-24 21:43:03,460 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-09-24 21:43:03,784 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 21:43:04,076 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-09-24 21:43:04,501 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-24 21:43:04,800 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 21:43:05,093 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-09-24 21:43:05,423 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-09-24 21:43:05,875 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-09-24 21:43:06,335 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-24 21:43:06,732 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2020-09-24 21:43:07,078 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2020-09-24 21:43:07,356 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-09-24 21:43:07,698 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2020-09-24 21:43:08,075 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2020-09-24 21:43:08,586 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-09-24 21:43:10,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:43:10,829 INFO L93 Difference]: Finished difference Result 2810 states and 3515 transitions. [2020-09-24 21:43:10,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-24 21:43:10,830 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 167 [2020-09-24 21:43:10,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:43:10,842 INFO L225 Difference]: With dead ends: 2810 [2020-09-24 21:43:10,842 INFO L226 Difference]: Without dead ends: 1814 [2020-09-24 21:43:10,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1457, Invalid=3799, Unknown=0, NotChecked=0, Total=5256 [2020-09-24 21:43:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-09-24 21:43:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1561. [2020-09-24 21:43:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1561 states. [2020-09-24 21:43:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 1905 transitions. [2020-09-24 21:43:10,919 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 1905 transitions. Word has length 167 [2020-09-24 21:43:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:43:10,920 INFO L479 AbstractCegarLoop]: Abstraction has 1561 states and 1905 transitions. [2020-09-24 21:43:10,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 21:43:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 1905 transitions. [2020-09-24 21:43:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 21:43:10,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:10,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:43:10,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:43:10,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:10,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:10,927 INFO L82 PathProgramCache]: Analyzing trace with hash -7656221, now seen corresponding path program 1 times [2020-09-24 21:43:10,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:10,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846976739] [2020-09-24 21:43:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:11,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:11,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:15,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:15,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-24 21:43:15,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:43:15,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:43:15,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:43:15,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:43:15,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:43:15,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:16,562 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-09-24 21:43:16,687 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-09-24 21:43:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:16,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:16,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:16,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 21:43:16,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:43:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:16,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:43:16,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-24 21:43:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:43:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:17,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:43:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 21:43:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:43:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:43:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:43:17,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846976739] [2020-09-24 21:43:17,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:43:17,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:43:17,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508483951] [2020-09-24 21:43:17,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:43:17,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:43:17,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:43:17,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:43:17,441 INFO L87 Difference]: Start difference. First operand 1561 states and 1905 transitions. Second operand 19 states. [2020-09-24 21:43:18,161 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-24 21:43:18,377 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 21:43:18,811 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-09-24 21:43:19,088 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78