/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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:43:53,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:43:53,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:43:53,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:43:53,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:43:53,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:43:53,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:43:53,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:43:53,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:43:53,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:43:53,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:43:53,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:43:53,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:43:53,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:43:53,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:43:53,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:43:53,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:43:53,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:43:53,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:43:53,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:43:53,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:43:53,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:43:53,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:43:53,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:43:53,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:43:53,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:43:53,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:43:53,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:43:53,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:43:53,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:43:53,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:43:53,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:43:53,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:43:53,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:43:53,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:43:53,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:43:53,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:43:53,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:43:53,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:43:53,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:43:53,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:43:53,753 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 21:43:53,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:43:53,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:43:53,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:43:53,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:43:53,808 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:43:53,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:43:53,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:43:53,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:43:53,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:43:53,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:43:53,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:43:53,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:43:53,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:43:53,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:43:53,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:43:53,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:43:53,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:43:53,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:43:53,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:43:53,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:43:53,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:43:53,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:43:53,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:43:53,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:43:53,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:43:53,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:43:53,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:43:53,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:43:53,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:43:53,815 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 21:43:54,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:43:54,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:43:54,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:43:54,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:43:54,319 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:43:54,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-24 21:43:54,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f411139c/51bbfc33fcf04c8c83e0270943b08a37/FLAG1f2b624c6 [2020-09-24 21:43:55,000 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:43:55,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-24 21:43:55,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f411139c/51bbfc33fcf04c8c83e0270943b08a37/FLAG1f2b624c6 [2020-09-24 21:43:55,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f411139c/51bbfc33fcf04c8c83e0270943b08a37 [2020-09-24 21:43:55,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:43:55,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:43:55,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:43:55,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:43:55,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:43:55,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:43:55" (1/1) ... [2020-09-24 21:43:55,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70996f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:55, skipping insertion in model container [2020-09-24 21:43:55,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:43:55" (1/1) ... [2020-09-24 21:43:55,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:43:55,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:43:55,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:43:55,835 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:43:56,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:43:56,062 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:43:56,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56 WrapperNode [2020-09-24 21:43:56,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:43:56,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:43:56,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:43:56,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:43:56,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (1/1) ... [2020-09-24 21:43:56,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (1/1) ... [2020-09-24 21:43:56,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (1/1) ... [2020-09-24 21:43:56,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (1/1) ... [2020-09-24 21:43:56,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (1/1) ... [2020-09-24 21:43:56,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (1/1) ... [2020-09-24 21:43:56,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (1/1) ... [2020-09-24 21:43:56,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:43:56,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:43:56,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:43:56,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:43:56,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (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 21:43:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:43:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:43:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:43:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:43:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:43:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:43:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:43:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:43:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:43:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:43:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:43:57,711 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:43:57,711 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:43:57,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:43:57 BoogieIcfgContainer [2020-09-24 21:43:57,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:43:57,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:43:57,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:43:57,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:43:57,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:43:55" (1/3) ... [2020-09-24 21:43:57,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6f761e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:43:57, skipping insertion in model container [2020-09-24 21:43:57,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:43:56" (2/3) ... [2020-09-24 21:43:57,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6f761e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:43:57, skipping insertion in model container [2020-09-24 21:43:57,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:43:57" (3/3) ... [2020-09-24 21:43:57,732 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-24 21:43:57,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:43:57,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:43:57,779 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:43:57,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:43:57,814 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:43:57,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:43:57,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:43:57,815 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:43:57,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:43:57,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:43:57,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:43:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:43:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-24 21:43:57,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:43:57,871 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] [2020-09-24 21:43:57,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:43:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:43:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-24 21:43:57,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:43:57,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242294240] [2020-09-24 21:43:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:43:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:58,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:00,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:03,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:03,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 21:44:03,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:44:03,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:44:03,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:03,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:44:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:44:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:44:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:03,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:03,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:44:03,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 21:44:03,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:44:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:04,169 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 21:44:04,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242294240] [2020-09-24 21:44:04,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:04,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 21:44:04,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478627257] [2020-09-24 21:44:04,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:44:04,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:04,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:44:04,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:44:04,206 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 17 states. [2020-09-24 21:44:04,616 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-24 21:44:04,801 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-24 21:44:05,017 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-24 21:44:05,253 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-09-24 21:44:05,471 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-09-24 21:44:05,896 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-24 21:44:06,137 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-09-24 21:44:06,504 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-09-24 21:44:07,717 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-09-24 21:44:07,962 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-09-24 21:44:08,277 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-09-24 21:44:09,034 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-09-24 21:44:09,496 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-09-24 21:44:09,727 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-09-24 21:44:10,693 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-09-24 21:44:11,077 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2020-09-24 21:44:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:13,559 INFO L93 Difference]: Finished difference Result 1870 states and 2662 transitions. [2020-09-24 21:44:13,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 21:44:13,561 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 129 [2020-09-24 21:44:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:13,591 INFO L225 Difference]: With dead ends: 1870 [2020-09-24 21:44:13,591 INFO L226 Difference]: Without dead ends: 1241 [2020-09-24 21:44:13,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 21:44:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-09-24 21:44:13,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1076. [2020-09-24 21:44:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2020-09-24 21:44:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1294 transitions. [2020-09-24 21:44:13,743 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1294 transitions. Word has length 129 [2020-09-24 21:44:13,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:13,744 INFO L479 AbstractCegarLoop]: Abstraction has 1076 states and 1294 transitions. [2020-09-24 21:44:13,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:44:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1294 transitions. [2020-09-24 21:44:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 21:44:13,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:13,764 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] [2020-09-24 21:44:13,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:13,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash -561023560, now seen corresponding path program 1 times [2020-09-24 21:44:13,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:13,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726783628] [2020-09-24 21:44:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:13,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:14,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:15,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:16,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:16,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:18,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:18,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 21:44:18,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:44:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:44:18,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:44:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:44:18,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:44:18,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:19,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:19,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:19,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:44:19,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 21:44:19,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:44:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:44:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:19,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:19,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:19,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:19,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:19,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 21:44:19,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:19,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:44:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:19,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:19,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726783628] [2020-09-24 21:44:19,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:19,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:44:19,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488454315] [2020-09-24 21:44:19,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:44:19,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:19,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:44:19,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:44:19,678 INFO L87 Difference]: Start difference. First operand 1076 states and 1294 transitions. Second operand 19 states. [2020-09-24 21:44:20,796 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-09-24 21:44:21,035 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-09-24 21:44:21,232 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-09-24 21:44:21,663 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-09-24 21:44:21,925 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-09-24 21:44:22,336 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-09-24 21:44:22,561 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-09-24 21:44:22,805 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-09-24 21:44:23,611 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-09-24 21:44:24,197 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-09-24 21:44:24,538 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-09-24 21:44:25,345 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-09-24 21:44:25,893 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-09-24 21:44:26,283 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-09-24 21:44:26,655 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-09-24 21:44:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:28,195 INFO L93 Difference]: Finished difference Result 4063 states and 5408 transitions. [2020-09-24 21:44:28,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-24 21:44:28,197 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 151 [2020-09-24 21:44:28,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:28,229 INFO L225 Difference]: With dead ends: 4063 [2020-09-24 21:44:28,229 INFO L226 Difference]: Without dead ends: 3067 [2020-09-24 21:44:28,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=661, Invalid=1501, Unknown=0, NotChecked=0, Total=2162 [2020-09-24 21:44:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3067 states. [2020-09-24 21:44:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3067 to 2844. [2020-09-24 21:44:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2020-09-24 21:44:28,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3418 transitions. [2020-09-24 21:44:28,431 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3418 transitions. Word has length 151 [2020-09-24 21:44:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:28,432 INFO L479 AbstractCegarLoop]: Abstraction has 2844 states and 3418 transitions. [2020-09-24 21:44:28,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:44:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3418 transitions. [2020-09-24 21:44:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 21:44:28,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:28,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:44:28,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:28,450 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1482611501, now seen corresponding path program 1 times [2020-09-24 21:44:28,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:28,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147955750] [2020-09-24 21:44:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:30,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:33,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 21:44:33,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:44:33,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 21:44:33,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:44:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:44:33,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:44:33,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:33,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:33,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:44:33,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:33,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:44:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:44:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:44:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:33,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:44:33,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:33,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 21:44:33,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:33,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:44:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:44:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:44:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:44:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:44:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:44:34,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147955750] [2020-09-24 21:44:34,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:34,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:44:34,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911942153] [2020-09-24 21:44:34,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:44:34,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:34,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:44:34,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:34,259 INFO L87 Difference]: Start difference. First operand 2844 states and 3418 transitions. Second operand 13 states. [2020-09-24 21:44:40,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:40,752 INFO L93 Difference]: Finished difference Result 8524 states and 11313 transitions. [2020-09-24 21:44:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 21:44:40,753 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 164 [2020-09-24 21:44:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:40,790 INFO L225 Difference]: With dead ends: 8524 [2020-09-24 21:44:40,790 INFO L226 Difference]: Without dead ends: 5410 [2020-09-24 21:44:40,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:44:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2020-09-24 21:44:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 4768. [2020-09-24 21:44:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4768 states. [2020-09-24 21:44:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 5915 transitions. [2020-09-24 21:44:40,987 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 5915 transitions. Word has length 164 [2020-09-24 21:44:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:40,987 INFO L479 AbstractCegarLoop]: Abstraction has 4768 states and 5915 transitions. [2020-09-24 21:44:40,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:44:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 5915 transitions. [2020-09-24 21:44:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 21:44:41,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:41,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:41,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:41,006 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:41,007 INFO L82 PathProgramCache]: Analyzing trace with hash 399218786, now seen corresponding path program 1 times [2020-09-24 21:44:41,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:41,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96514587] [2020-09-24 21:44:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking...