/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=0.6 --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/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:11,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:11,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:11,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:11,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:11,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:11,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:11,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:11,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:11,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:11,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:11,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:11,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:11,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:11,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:11,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:11,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:11,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:11,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:11,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:11,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:11,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:11,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:11,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:11,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:11,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:11,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:11,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:11,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:11,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:11,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:11,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:11,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:11,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:11,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:11,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:11,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:11,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:11,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:11,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:11,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:11,684 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 06:48:11,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:11,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:11,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:11,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:11,722 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:11,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:11,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:11,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:11,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:11,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:11,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:11,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:11,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:11,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:11,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:11,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:11,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:11,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:11,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:11,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:11,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:11,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:11,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:11,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:11,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:11,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:11,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:11,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:11,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:11,728 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:48:12,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:12,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:12,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:12,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:12,219 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:12,220 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 06:48:12,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d0933f25/f8e6afc93eb3424aa0879813e7044e94/FLAG879321b7e [2020-09-25 06:48:12,980 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:48:12,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 06:48:12,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d0933f25/f8e6afc93eb3424aa0879813e7044e94/FLAG879321b7e [2020-09-25 06:48:13,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d0933f25/f8e6afc93eb3424aa0879813e7044e94 [2020-09-25 06:48:13,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:48:13,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:48:13,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:13,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:48:13,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:48:13,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:13" (1/1) ... [2020-09-25 06:48:13,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:13, skipping insertion in model container [2020-09-25 06:48:13,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:48:13" (1/1) ... [2020-09-25 06:48:13,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:48:13,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:48:13,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:13,860 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:48:14,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:48:14,086 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:48:14,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14 WrapperNode [2020-09-25 06:48:14,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:48:14,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:48:14,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:48:14,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:48:14,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... [2020-09-25 06:48:14,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... [2020-09-25 06:48:14,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... [2020-09-25 06:48:14,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... [2020-09-25 06:48:14,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... [2020-09-25 06:48:14,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... [2020-09-25 06:48:14,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... [2020-09-25 06:48:14,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:48:14,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:48:14,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:48:14,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:48:14,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:14,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:48:14,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:48:14,304 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:48:14,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:48:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:48:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:48:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:48:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:48:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:48:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:48:14,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:48:15,744 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:48:15,744 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:48:15,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:15 BoogieIcfgContainer [2020-09-25 06:48:15,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:48:15,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:48:15,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:48:15,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:48:15,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:48:13" (1/3) ... [2020-09-25 06:48:15,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:15, skipping insertion in model container [2020-09-25 06:48:15,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:48:14" (2/3) ... [2020-09-25 06:48:15,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:48:15, skipping insertion in model container [2020-09-25 06:48:15,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:48:15" (3/3) ... [2020-09-25 06:48:15,764 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 06:48:15,777 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:48:15,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:48:15,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:48:15,854 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:48:15,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:48:15,855 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:48:15,856 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:48:15,856 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:48:15,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:48:15,856 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:48:15,856 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:48:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:48:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 06:48:15,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:15,904 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] [2020-09-25 06:48:15,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:15,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 06:48:15,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:15,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 06:48:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:17,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 06:48:17,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:48:17,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-09-25 06:48:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:17,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:48:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 06:48:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:48:17,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:17,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:17,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:17,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:17,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:48:17,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:17,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:48:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:17,273 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 06:48:17,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 06:48:17,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:17,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:48:17,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498567906] [2020-09-25 06:48:17,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:48:17,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:17,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:48:17,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:48:17,307 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:48:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:19,434 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 06:48:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:48:19,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 06:48:19,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:19,463 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 06:48:19,464 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 06:48:19,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:48:19,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 06:48:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 06:48:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 06:48:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 06:48:19,586 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 06:48:19,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:19,586 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 06:48:19,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:48:19,587 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 06:48:19,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 06:48:19,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:19,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:19,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:48:19,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:19,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:19,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 06:48:19,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:19,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584275404] [2020-09-25 06:48:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:20,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:21,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:24,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:48:24,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:24,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:48:24,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:24,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:48:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:48:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 06:48:24,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:24,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:24,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:48:24,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:24,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:24,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:48:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:48:24,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:25,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:25,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:25,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:48:25,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-09-25 06:48:25,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:25,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:25,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:25,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:25,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:25,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:25,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584275404] [2020-09-25 06:48:25,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:25,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:48:25,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418834777] [2020-09-25 06:48:25,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:48:25,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:25,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:48:25,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:48:25,506 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 10 states. [2020-09-25 06:48:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:28,798 INFO L93 Difference]: Finished difference Result 1663 states and 2149 transitions. [2020-09-25 06:48:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:48:28,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2020-09-25 06:48:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:28,809 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 06:48:28,809 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 06:48:28,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:48:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 06:48:28,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 06:48:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 06:48:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 06:48:28,875 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 140 [2020-09-25 06:48:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:28,876 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 06:48:28,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:48:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 06:48:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 06:48:28,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:28,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:28,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:48:28,881 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:28,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 06:48:28,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:28,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182052556] [2020-09-25 06:48:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:33,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:48:33,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:48:33,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4536 [2020-09-25 06:48:33,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:33,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:48:33,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:48:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:33,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:33,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:33,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:33,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:48:33,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:33,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:48:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:33,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:33,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:33,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:48:33,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:33,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 06:48:33,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:33,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:33,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:48:33,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:33,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182052556] [2020-09-25 06:48:33,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:33,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:33,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742651779] [2020-09-25 06:48:33,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:33,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:33,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:33,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:33,770 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 7 states. [2020-09-25 06:48:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:35,834 INFO L93 Difference]: Finished difference Result 2755 states and 3540 transitions. [2020-09-25 06:48:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:48:35,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 06:48:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:35,856 INFO L225 Difference]: With dead ends: 2755 [2020-09-25 06:48:35,856 INFO L226 Difference]: Without dead ends: 1738 [2020-09-25 06:48:35,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:48:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-09-25 06:48:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1664. [2020-09-25 06:48:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 06:48:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 1997 transitions. [2020-09-25 06:48:35,944 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 1997 transitions. Word has length 140 [2020-09-25 06:48:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:35,945 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 1997 transitions. [2020-09-25 06:48:35,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 1997 transitions. [2020-09-25 06:48:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 06:48:35,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:35,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:35,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:48:35,948 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 06:48:35,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:35,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608692764] [2020-09-25 06:48:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:37,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:39,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:39,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:48:39,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:39,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3777 [2020-09-25 06:48:39,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:39,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:48:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:48:39,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:48:39,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:39,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:39,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:39,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:48:39,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:39,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:39,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:39,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:39,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:48:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:39,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:39,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 06:48:40,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:40,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:48:40,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:40,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:48:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:40,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608692764] [2020-09-25 06:48:40,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:40,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:48:40,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51641523] [2020-09-25 06:48:40,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:48:40,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:40,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:48:40,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:48:40,092 INFO L87 Difference]: Start difference. First operand 1664 states and 1997 transitions. Second operand 6 states. [2020-09-25 06:48:43,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:43,106 INFO L93 Difference]: Finished difference Result 4166 states and 5202 transitions. [2020-09-25 06:48:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:48:43,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 06:48:43,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:43,123 INFO L225 Difference]: With dead ends: 4166 [2020-09-25 06:48:43,123 INFO L226 Difference]: Without dead ends: 2517 [2020-09-25 06:48:43,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:48:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2020-09-25 06:48:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2300. [2020-09-25 06:48:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2300 states. [2020-09-25 06:48:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 2896 transitions. [2020-09-25 06:48:43,220 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 2896 transitions. Word has length 146 [2020-09-25 06:48:43,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:43,221 INFO L479 AbstractCegarLoop]: Abstraction has 2300 states and 2896 transitions. [2020-09-25 06:48:43,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:48:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 2896 transitions. [2020-09-25 06:48:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 06:48:43,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:43,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:43,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:48:43,224 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:43,225 INFO L82 PathProgramCache]: Analyzing trace with hash -764978616, now seen corresponding path program 1 times [2020-09-25 06:48:43,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:43,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843822059] [2020-09-25 06:48:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:44,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:48:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:48:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-09-25 06:48:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:44,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:48:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:48:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:48:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:44,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:44,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:44,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:48:44,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:44,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:48:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:44,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:44,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:44,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:48:44,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:44,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 06:48:44,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:44,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:44,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:48:44,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:48:45,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843822059] [2020-09-25 06:48:45,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:48:45,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:48:45,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527853289] [2020-09-25 06:48:45,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:45,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:45,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:45,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:45,065 INFO L87 Difference]: Start difference. First operand 2300 states and 2896 transitions. Second operand 7 states. [2020-09-25 06:48:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:47,280 INFO L93 Difference]: Finished difference Result 5987 states and 7821 transitions. [2020-09-25 06:48:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:47,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 06:48:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:47,304 INFO L225 Difference]: With dead ends: 5987 [2020-09-25 06:48:47,304 INFO L226 Difference]: Without dead ends: 3702 [2020-09-25 06:48:47,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2020-09-25 06:48:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3544. [2020-09-25 06:48:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-09-25 06:48:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 4585 transitions. [2020-09-25 06:48:47,424 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 4585 transitions. Word has length 162 [2020-09-25 06:48:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:47,425 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 4585 transitions. [2020-09-25 06:48:47,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:47,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 4585 transitions. [2020-09-25 06:48:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 06:48:47,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:47,432 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:47,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:48:47,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:47,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:47,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1252943563, now seen corresponding path program 1 times [2020-09-25 06:48:47,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:47,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675019690] [2020-09-25 06:48:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:47,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:52,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 06:48:52,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:48:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:48:52,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:52,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:48:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 06:48:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:52,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:52,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:52,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:48:52,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:52,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:52,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:52,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:52,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:52,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:52,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 06:48:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:52,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:48:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:52,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:52,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:52,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:48:52,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 06:48:52,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:52,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:48:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:48:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:52,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675019690] [2020-09-25 06:48:52,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:52,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:52,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967159772] [2020-09-25 06:48:52,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:52,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:52,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:52,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:52,949 INFO L87 Difference]: Start difference. First operand 3544 states and 4585 transitions. Second operand 7 states. [2020-09-25 06:48:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:55,884 INFO L93 Difference]: Finished difference Result 8730 states and 11543 transitions. [2020-09-25 06:48:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:55,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-25 06:48:55,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:55,909 INFO L225 Difference]: With dead ends: 8730 [2020-09-25 06:48:55,909 INFO L226 Difference]: Without dead ends: 4387 [2020-09-25 06:48:55,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:48:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2020-09-25 06:48:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 3785. [2020-09-25 06:48:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3785 states. [2020-09-25 06:48:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 4739 transitions. [2020-09-25 06:48:56,040 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 4739 transitions. Word has length 240 [2020-09-25 06:48:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:56,041 INFO L479 AbstractCegarLoop]: Abstraction has 3785 states and 4739 transitions. [2020-09-25 06:48:56,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:48:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 4739 transitions. [2020-09-25 06:48:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 06:48:56,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:56,048 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:56,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:56,048 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:56,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1159246625, now seen corresponding path program 1 times [2020-09-25 06:48:56,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:56,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718091369] [2020-09-25 06:48:56,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:56,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:58,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:01,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 06:49:01,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:49:01,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:01,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:49:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:49:01,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 06:49:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:01,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:01,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:01,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:49:01,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:01,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:01,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:01,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking...