/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:14,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:14,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:14,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:14,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:14,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:14,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:14,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:14,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:14,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:14,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:14,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:14,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:14,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:14,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:14,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:14,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:14,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:14,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:14,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:14,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:14,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:14,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:14,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:14,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:14,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:14,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:14,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:14,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:14,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:14,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:14,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:14,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:14,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:14,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:14,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:14,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:14,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:14,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:14,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:14,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:14,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:20:14,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:14,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:14,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:14,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:14,848 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:14,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:14,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:14,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:14,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:14,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:14,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:14,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:14,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:14,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:14,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:14,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:14,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:14,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:14,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:14,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:14,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:14,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:14,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:14,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:14,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:14,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:14,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:14,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:14,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:14,861 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:20:15,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:15,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:15,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:15,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:15,366 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:15,367 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-24 18:20:15,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f4bf0b6a/a76301beda0146b1961950443759c9af/FLAGc118b59ea [2020-09-24 18:20:16,085 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:16,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-24 18:20:16,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f4bf0b6a/a76301beda0146b1961950443759c9af/FLAGc118b59ea [2020-09-24 18:20:16,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f4bf0b6a/a76301beda0146b1961950443759c9af [2020-09-24 18:20:16,328 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:16,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:16,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:16,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:16,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:16,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:16" (1/1) ... [2020-09-24 18:20:16,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:16, skipping insertion in model container [2020-09-24 18:20:16,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:16" (1/1) ... [2020-09-24 18:20:16,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:16,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:16,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:16,947 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:17,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:17,203 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:17,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17 WrapperNode [2020-09-24 18:20:17,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:17,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:17,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:17,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:17,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... [2020-09-24 18:20:17,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:17,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:17,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:17,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:17,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:18,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:18,941 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:18,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:18 BoogieIcfgContainer [2020-09-24 18:20:18,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:18,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:18,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:18,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:18,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:16" (1/3) ... [2020-09-24 18:20:18,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:18, skipping insertion in model container [2020-09-24 18:20:18,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:17" (2/3) ... [2020-09-24 18:20:18,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:18, skipping insertion in model container [2020-09-24 18:20:18,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:18" (3/3) ... [2020-09-24 18:20:18,972 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-09-24 18:20:18,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:19,003 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:19,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:19,090 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:19,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:19,091 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:19,091 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:19,091 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:19,091 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:19,091 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:19,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-24 18:20:19,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:19,149 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] [2020-09-24 18:20:19,149 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:19,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash -672460611, now seen corresponding path program 1 times [2020-09-24 18:20:19,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:19,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800467740] [2020-09-24 18:20:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:20,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:23,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-24 18:20:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:24,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:20:24,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:20:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 18:20:24,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:20:24,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:24,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:24,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:24,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:20:24,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:24,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800467740] [2020-09-24 18:20:24,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:24,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:20:24,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16343994] [2020-09-24 18:20:24,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:20:24,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:24,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:20:24,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:20:24,814 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:20:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:27,009 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-24 18:20:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:20:27,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-09-24 18:20:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:27,037 INFO L225 Difference]: With dead ends: 1235 [2020-09-24 18:20:27,038 INFO L226 Difference]: Without dead ends: 661 [2020-09-24 18:20:27,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-24 18:20:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-24 18:20:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-24 18:20:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-24 18:20:27,160 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 113 [2020-09-24 18:20:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:27,163 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-24 18:20:27,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:20:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-24 18:20:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 18:20:27,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:27,182 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] [2020-09-24 18:20:27,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:27,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:27,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:27,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1544605760, now seen corresponding path program 1 times [2020-09-24 18:20:27,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:27,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066227106] [2020-09-24 18:20:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:29,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:32,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:32,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-24 18:20:32,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:32,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:20:32,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:32,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 18:20:32,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 18:20:32,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:32,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:32,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:32,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:32,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:32,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:20:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:20:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:32,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066227106] [2020-09-24 18:20:32,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:32,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:32,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183217139] [2020-09-24 18:20:32,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:32,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:32,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:32,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:32,463 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-24 18:20:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:34,627 INFO L93 Difference]: Finished difference Result 1524 states and 1875 transitions. [2020-09-24 18:20:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:34,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-09-24 18:20:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:34,643 INFO L225 Difference]: With dead ends: 1524 [2020-09-24 18:20:34,643 INFO L226 Difference]: Without dead ends: 943 [2020-09-24 18:20:34,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-24 18:20:34,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 891. [2020-09-24 18:20:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-24 18:20:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1072 transitions. [2020-09-24 18:20:34,698 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1072 transitions. Word has length 130 [2020-09-24 18:20:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:34,699 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1072 transitions. [2020-09-24 18:20:34,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1072 transitions. [2020-09-24 18:20:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 18:20:34,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:34,705 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:34,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:34,706 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:34,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:34,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1859994479, now seen corresponding path program 1 times [2020-09-24 18:20:34,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:34,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656144777] [2020-09-24 18:20:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:36,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:39,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 18:20:39,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 18:20:39,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:20:39,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 18:20:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:20:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:39,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:20:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:20:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:39,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:39,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:20:39,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:39,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 18:20:39,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:39,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:39,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:20:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:40,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656144777] [2020-09-24 18:20:40,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:40,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:20:40,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832801088] [2020-09-24 18:20:40,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:40,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:40,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:40,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:40,094 INFO L87 Difference]: Start difference. First operand 891 states and 1072 transitions. Second operand 7 states. [2020-09-24 18:20:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:42,310 INFO L93 Difference]: Finished difference Result 2224 states and 2765 transitions. [2020-09-24 18:20:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:20:42,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-09-24 18:20:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:42,319 INFO L225 Difference]: With dead ends: 2224 [2020-09-24 18:20:42,320 INFO L226 Difference]: Without dead ends: 1357 [2020-09-24 18:20:42,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:20:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2020-09-24 18:20:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1326. [2020-09-24 18:20:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2020-09-24 18:20:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1606 transitions. [2020-09-24 18:20:42,370 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1606 transitions. Word has length 135 [2020-09-24 18:20:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:42,371 INFO L479 AbstractCegarLoop]: Abstraction has 1326 states and 1606 transitions. [2020-09-24 18:20:42,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1606 transitions. [2020-09-24 18:20:42,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:20:42,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:42,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:42,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:42,378 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:42,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1140849621, now seen corresponding path program 1 times [2020-09-24 18:20:42,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:42,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722374060] [2020-09-24 18:20:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:47,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 18:20:47,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:20:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 18:20:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 18:20:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:47,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:47,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:47,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:47,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:47,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:20:47,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:47,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 18:20:47,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:47,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 18:20:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:47,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722374060] [2020-09-24 18:20:47,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:47,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:47,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459623886] [2020-09-24 18:20:47,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:47,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:47,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:47,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:47,685 INFO L87 Difference]: Start difference. First operand 1326 states and 1606 transitions. Second operand 5 states. [2020-09-24 18:20:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:49,680 INFO L93 Difference]: Finished difference Result 1937 states and 2379 transitions. [2020-09-24 18:20:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:49,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 18:20:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:49,696 INFO L225 Difference]: With dead ends: 1937 [2020-09-24 18:20:49,696 INFO L226 Difference]: Without dead ends: 1935 [2020-09-24 18:20:49,698 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 [2020-09-24 18:20:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-09-24 18:20:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1618. [2020-09-24 18:20:49,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1618 states. [2020-09-24 18:20:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 1997 transitions. [2020-09-24 18:20:49,784 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 1997 transitions. Word has length 156 [2020-09-24 18:20:49,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:49,785 INFO L479 AbstractCegarLoop]: Abstraction has 1618 states and 1997 transitions. [2020-09-24 18:20:49,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 1997 transitions. [2020-09-24 18:20:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 18:20:49,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:49,794 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-24 18:20:49,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:49,795 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:49,796 INFO L82 PathProgramCache]: Analyzing trace with hash 604576851, now seen corresponding path program 1 times [2020-09-24 18:20:49,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:49,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395430583] [2020-09-24 18:20:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:51,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:53,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-24 18:20:53,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:20:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3640 [2020-09-24 18:20:53,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:20:53,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:20:53,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:53,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:53,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:53,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:20:53,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:53,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:53,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:20:53,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:20:53,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:20:53,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 18:20:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:53,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:20:53,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 18:20:53,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:20:53,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:54,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395430583] [2020-09-24 18:20:54,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:54,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:54,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433129574] [2020-09-24 18:20:54,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:54,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:54,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:54,057 INFO L87 Difference]: Start difference. First operand 1618 states and 1997 transitions. Second operand 7 states. [2020-09-24 18:20:56,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:56,384 INFO L93 Difference]: Finished difference Result 3537 states and 4408 transitions. [2020-09-24 18:20:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:20:56,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-09-24 18:20:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:56,403 INFO L225 Difference]: With dead ends: 3537 [2020-09-24 18:20:56,403 INFO L226 Difference]: Without dead ends: 1943 [2020-09-24 18:20:56,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:20:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-09-24 18:20:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1630. [2020-09-24 18:20:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2020-09-24 18:20:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2020 transitions. [2020-09-24 18:20:56,460 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2020 transitions. Word has length 197 [2020-09-24 18:20:56,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:56,461 INFO L479 AbstractCegarLoop]: Abstraction has 1630 states and 2020 transitions. [2020-09-24 18:20:56,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2020 transitions. [2020-09-24 18:20:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 18:20:56,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:56,469 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, 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] [2020-09-24 18:20:56,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:56,470 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:56,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2080918392, now seen corresponding path program 1 times [2020-09-24 18:20:56,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:56,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514341148] [2020-09-24 18:20:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:01,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-24 18:21:01,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:01,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:21:01,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-09-24 18:21:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 18:21:01,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:01,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:01,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:01,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:01,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:01,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:21:01,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:21:01,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:01,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:01,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:01,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 18:21:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:21:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 18:21:01,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 18:21:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 18:21:01,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514341148] [2020-09-24 18:21:01,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:01,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:01,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787256596] [2020-09-24 18:21:01,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:01,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:01,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:01,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:01,910 INFO L87 Difference]: Start difference. First operand 1630 states and 2020 transitions. Second operand 5 states. [2020-09-24 18:21:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:04,033 INFO L93 Difference]: Finished difference Result 3855 states and 4878 transitions. [2020-09-24 18:21:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:04,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-09-24 18:21:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:04,046 INFO L225 Difference]: With dead ends: 3855 [2020-09-24 18:21:04,047 INFO L226 Difference]: Without dead ends: 2249 [2020-09-24 18:21:04,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2020-09-24 18:21:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2198. [2020-09-24 18:21:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2020-09-24 18:21:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 2750 transitions. [2020-09-24 18:21:04,111 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 2750 transitions. Word has length 223 [2020-09-24 18:21:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:04,112 INFO L479 AbstractCegarLoop]: Abstraction has 2198 states and 2750 transitions. [2020-09-24 18:21:04,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 2750 transitions. [2020-09-24 18:21:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 18:21:04,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:04,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:04,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:21:04,123 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:04,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:04,123 INFO L82 PathProgramCache]: Analyzing trace with hash 454804171, now seen corresponding path program 1 times [2020-09-24 18:21:04,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:04,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522925303] [2020-09-24 18:21:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:04,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking...