/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:55,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:55,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:55,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:55,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:55,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:55,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:55,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:55,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:55,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:55,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:55,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:55,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:55,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:55,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:55,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:55,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:55,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:55,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:55,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:55,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:55,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:55,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:55,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:55,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:55,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:55,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:55,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:55,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:55,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:55,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:55,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:55,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:55,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:55,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:55,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:55,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:55,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:55,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:55,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:55,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:55,757 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:27:55,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:55,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:55,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:55,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:55,786 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:55,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:55,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:55,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:55,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:55,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:55,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:55,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:55,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:55,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:55,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:55,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:55,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:55,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:55,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:55,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:55,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:55,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:55,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:55,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:55,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:55,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:55,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:55,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:55,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:55,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:27:56,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:56,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:56,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:56,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:56,310 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:56,311 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 04:27:56,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c76edca47/ee86a10023d74c198413e8a9dc6a4322/FLAG0c4ba49b0 [2020-09-25 04:27:57,084 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:57,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 04:27:57,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c76edca47/ee86a10023d74c198413e8a9dc6a4322/FLAG0c4ba49b0 [2020-09-25 04:27:57,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c76edca47/ee86a10023d74c198413e8a9dc6a4322 [2020-09-25 04:27:57,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:57,302 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:57,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:57,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:57,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:57,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:57" (1/1) ... [2020-09-25 04:27:57,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:57, skipping insertion in model container [2020-09-25 04:27:57,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:57" (1/1) ... [2020-09-25 04:27:57,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:57,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:57,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:57,948 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:58,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:58,186 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:58,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58 WrapperNode [2020-09-25 04:27:58,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:58,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:58,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:58,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:58,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... [2020-09-25 04:27:58,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... [2020-09-25 04:27:58,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... [2020-09-25 04:27:58,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... [2020-09-25 04:27:58,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... [2020-09-25 04:27:58,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... [2020-09-25 04:27:58,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... [2020-09-25 04:27:58,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:58,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:58,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:58,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:58,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:58,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:58,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:58,401 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:58,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:58,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:59,766 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:59,766 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:59,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:59 BoogieIcfgContainer [2020-09-25 04:27:59,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:59,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:59,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:59,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:59,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:57" (1/3) ... [2020-09-25 04:27:59,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:59, skipping insertion in model container [2020-09-25 04:27:59,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:58" (2/3) ... [2020-09-25 04:27:59,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:59, skipping insertion in model container [2020-09-25 04:27:59,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:59" (3/3) ... [2020-09-25 04:27:59,800 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label31.c [2020-09-25 04:27:59,815 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:59,831 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:59,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:59,898 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:59,899 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:59,899 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:59,899 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:59,899 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:59,899 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:59,899 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:59,900 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 04:27:59,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:59,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:59,985 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1921303583, now seen corresponding path program 1 times [2020-09-25 04:28:00,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:00,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-25 04:28:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:03,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:28:05,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:28:05,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:28:05,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:05,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:28:05,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 04:28:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:28:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:05,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:28:05,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:28:05,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:05,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-25 04:28:05,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:05,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:05,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611395043] [2020-09-25 04:28:05,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:05,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:05,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:05,765 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:07,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:07,996 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 04:28:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:08,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-25 04:28:08,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:08,045 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 04:28:08,045 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 04:28:08,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 04:28:08,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 04:28:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 04:28:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 04:28:08,166 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 142 [2020-09-25 04:28:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:08,167 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 04:28:08,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 04:28:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:28:08,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:08,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:08,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:08,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:08,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:08,175 INFO L82 PathProgramCache]: Analyzing trace with hash -377236683, now seen corresponding path program 1 times [2020-09-25 04:28:08,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:08,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443356320] [2020-09-25 04:28:08,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:08,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:10,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:12,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:12,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:13,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 04:28:13,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:28:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:28:13,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:13,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:28:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 04:28:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:13,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:13,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:13,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:13,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:13,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:13,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:13,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:13,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:13,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:13,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:13,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:13,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:28:13,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:13,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:13,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:28:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:13,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443356320] [2020-09-25 04:28:13,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:13,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:13,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573791991] [2020-09-25 04:28:13,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:13,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:13,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:13,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:13,441 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 04:28:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:15,338 INFO L93 Difference]: Finished difference Result 1609 states and 2063 transitions. [2020-09-25 04:28:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:15,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 04:28:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:15,351 INFO L225 Difference]: With dead ends: 1609 [2020-09-25 04:28:15,351 INFO L226 Difference]: Without dead ends: 972 [2020-09-25 04:28:15,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-25 04:28:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 810. [2020-09-25 04:28:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-09-25 04:28:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1037 transitions. [2020-09-25 04:28:15,401 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1037 transitions. Word has length 160 [2020-09-25 04:28:15,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:15,402 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1037 transitions. [2020-09-25 04:28:15,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:15,402 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1037 transitions. [2020-09-25 04:28:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 04:28:15,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:15,407 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:15,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:15,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash -880736070, now seen corresponding path program 1 times [2020-09-25 04:28:15,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:15,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280081562] [2020-09-25 04:28:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:15,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:15,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:20,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:20,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 04:28:20,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:20,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:28:20,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:20,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:28:20,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 04:28:20,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:20,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:20,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:20,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:20,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:20,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:20,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:28:20,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:20,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:28:20,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:20,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:20,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:28:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:20,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280081562] [2020-09-25 04:28:20,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:20,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:20,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512312600] [2020-09-25 04:28:20,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:20,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:20,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:20,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:20,697 INFO L87 Difference]: Start difference. First operand 810 states and 1037 transitions. Second operand 5 states. [2020-09-25 04:28:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:22,598 INFO L93 Difference]: Finished difference Result 2061 states and 2780 transitions. [2020-09-25 04:28:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:22,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 04:28:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:22,609 INFO L225 Difference]: With dead ends: 2061 [2020-09-25 04:28:22,609 INFO L226 Difference]: Without dead ends: 1273 [2020-09-25 04:28:22,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-09-25 04:28:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1263. [2020-09-25 04:28:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-09-25 04:28:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1657 transitions. [2020-09-25 04:28:22,665 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1657 transitions. Word has length 168 [2020-09-25 04:28:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:22,666 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1657 transitions. [2020-09-25 04:28:22,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1657 transitions. [2020-09-25 04:28:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 04:28:22,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:22,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:22,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:22,675 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:22,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1512218259, now seen corresponding path program 1 times [2020-09-25 04:28:22,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:22,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133619752] [2020-09-25 04:28:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:22,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:27,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 04:28:27,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:27,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:28:27,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:27,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:28:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:28:27,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:28:27,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:27,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:27,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:27,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:27,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:27,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:28:27,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 04:28:27,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:27,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:28:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:27,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 04:28:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:27,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:28:27,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 04:28:27,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:27,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:28:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:28:28,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133619752] [2020-09-25 04:28:28,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:28,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:28,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461523045] [2020-09-25 04:28:28,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:28,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:28,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:28,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:28,029 INFO L87 Difference]: Start difference. First operand 1263 states and 1657 transitions. Second operand 7 states. [2020-09-25 04:28:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:31,528 INFO L93 Difference]: Finished difference Result 4128 states and 5925 transitions. [2020-09-25 04:28:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:28:31,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 04:28:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:31,552 INFO L225 Difference]: With dead ends: 4128 [2020-09-25 04:28:31,552 INFO L226 Difference]: Without dead ends: 2887 [2020-09-25 04:28:31,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:28:31,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2020-09-25 04:28:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2827. [2020-09-25 04:28:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-09-25 04:28:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3711 transitions. [2020-09-25 04:28:31,692 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3711 transitions. Word has length 217 [2020-09-25 04:28:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:31,693 INFO L479 AbstractCegarLoop]: Abstraction has 2827 states and 3711 transitions. [2020-09-25 04:28:31,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:31,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3711 transitions. [2020-09-25 04:28:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 04:28:31,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:31,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:28:31,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:31,717 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:31,717 INFO L82 PathProgramCache]: Analyzing trace with hash -144447401, now seen corresponding path program 1 times [2020-09-25 04:28:31,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:31,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776459872] [2020-09-25 04:28:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 04:28:36,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:28:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:36,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 04:28:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:28:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:28:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:36,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:36,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:28:36,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:36,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:36,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:28:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:28:36,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:28:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:28:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:37,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:37,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:28:37,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 04:28:37,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:37,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:28:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:28:37,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776459872] [2020-09-25 04:28:37,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:37,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:28:37,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963949031] [2020-09-25 04:28:37,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:28:37,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:37,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:28:37,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:28:37,107 INFO L87 Difference]: Start difference. First operand 2827 states and 3711 transitions. Second operand 8 states. [2020-09-25 04:28:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:40,359 INFO L93 Difference]: Finished difference Result 6150 states and 8370 transitions. [2020-09-25 04:28:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:28:40,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-09-25 04:28:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:40,379 INFO L225 Difference]: With dead ends: 6150 [2020-09-25 04:28:40,379 INFO L226 Difference]: Without dead ends: 3345 [2020-09-25 04:28:40,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:28:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2020-09-25 04:28:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3120. [2020-09-25 04:28:40,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-09-25 04:28:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 3993 transitions. [2020-09-25 04:28:40,480 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 3993 transitions. Word has length 220 [2020-09-25 04:28:40,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:40,480 INFO L479 AbstractCegarLoop]: Abstraction has 3120 states and 3993 transitions. [2020-09-25 04:28:40,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:28:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 3993 transitions. [2020-09-25 04:28:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 04:28:40,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:40,494 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:40,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:40,495 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash -190242086, now seen corresponding path program 1 times [2020-09-25 04:28:40,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:40,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171060554] [2020-09-25 04:28:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:40,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:45,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 04:28:45,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:28:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-09-25 04:28:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:45,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 04:28:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:28:45,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:45,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:45,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:45,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:45,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:28:45,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:45,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:45,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:45,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:45,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:45,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:45,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:45,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:28:45,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:45,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:45,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:45,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:45,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:28:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:45,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:28:45,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 04:28:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:45,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:45,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:28:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:28:45,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 04:28:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:45,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:45,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:28:45,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 04:28:45,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:45,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:45,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:28:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 04:28:46,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171060554] [2020-09-25 04:28:46,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:46,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:46,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152787965] [2020-09-25 04:28:46,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:46,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:46,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:46,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:46,072 INFO L87 Difference]: Start difference. First operand 3120 states and 3993 transitions. Second operand 7 states.