/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:09:34,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:09:34,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:09:34,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:09:34,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:09:34,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:09:34,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:09:34,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:09:34,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:09:34,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:09:34,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:09:34,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:09:34,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:09:34,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:09:34,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:09:34,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:09:34,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:09:34,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:09:34,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:09:34,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:09:34,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:09:34,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:09:34,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:09:34,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:09:34,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:09:34,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:09:34,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:09:34,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:09:34,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:09:34,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:09:34,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:09:34,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:09:34,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:09:34,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:09:34,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:09:34,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:09:34,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:09:34,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:09:34,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:09:34,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:09:34,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:09:34,910 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 01:09:34,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:09:34,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:09:34,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:09:34,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:09:34,954 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:09:34,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:09:34,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:09:34,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:09:34,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:09:34,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:09:34,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:09:34,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:09:34,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:09:34,957 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:09:34,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:09:34,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:09:34,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:09:34,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:09:34,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:09:34,959 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:09:34,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:09:34,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:09:34,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:09:34,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:09:34,960 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:09:34,960 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:09:34,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:09:34,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:09:34,961 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:09:34,961 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:09:35,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:09:35,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:09:35,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:09:35,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:09:35,470 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:09:35,471 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2020-09-25 01:09:35,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab08f1edb/5f149604f1d04ceb84c9ea755e4184e8/FLAGbc0dfa634 [2020-09-25 01:09:36,108 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:09:36,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/n.c40.c [2020-09-25 01:09:36,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab08f1edb/5f149604f1d04ceb84c9ea755e4184e8/FLAGbc0dfa634 [2020-09-25 01:09:36,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab08f1edb/5f149604f1d04ceb84c9ea755e4184e8 [2020-09-25 01:09:36,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:09:36,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:09:36,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:36,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:09:36,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:09:36,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e67e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36, skipping insertion in model container [2020-09-25 01:09:36,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:09:36,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:09:36,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:36,761 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:09:36,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:36,814 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:09:36,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36 WrapperNode [2020-09-25 01:09:36,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:36,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:09:36,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:09:36,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:09:36,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (1/1) ... [2020-09-25 01:09:36,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:09:36,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:09:36,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:09:36,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:09:36,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (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 01:09:37,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:09:37,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:09:37,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:09:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:09:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:09:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:09:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:09:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:09:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:09:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:09:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:09:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:09:37,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:09:37,309 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:09:37,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:37 BoogieIcfgContainer [2020-09-25 01:09:37,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:09:37,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:09:37,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:09:37,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:09:37,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:09:36" (1/3) ... [2020-09-25 01:09:37,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffcc453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:37, skipping insertion in model container [2020-09-25 01:09:37,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:36" (2/3) ... [2020-09-25 01:09:37,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ffcc453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:37, skipping insertion in model container [2020-09-25 01:09:37,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:37" (3/3) ... [2020-09-25 01:09:37,325 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2020-09-25 01:09:37,337 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:09:37,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:09:37,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:09:37,392 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:09:37,393 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:09:37,393 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:09:37,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:09:37,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:09:37,393 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:09:37,393 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:09:37,394 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:09:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-09-25 01:09:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 01:09:37,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:37,424 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] [2020-09-25 01:09:37,424 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:37,430 INFO L82 PathProgramCache]: Analyzing trace with hash 814682400, now seen corresponding path program 1 times [2020-09-25 01:09:37,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:37,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349746705] [2020-09-25 01:09:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:37,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:37,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:37,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 01:09:37,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:09:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-25 01:09:37,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 01:09:37,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 01:09:38,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:38,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:38,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:09:38,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 01:09:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:38,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:38,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:09:38,162 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 01:09:38,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349746705] [2020-09-25 01:09:38,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:38,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:09:38,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87914844] [2020-09-25 01:09:38,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:09:38,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:38,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:09:38,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:09:38,192 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-09-25 01:09:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:38,309 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-25 01:09:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:09:38,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-25 01:09:38,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:38,325 INFO L225 Difference]: With dead ends: 54 [2020-09-25 01:09:38,325 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 01:09:38,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:09:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 01:09:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 01:09:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 01:09:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-25 01:09:38,377 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 25 [2020-09-25 01:09:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:38,378 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-25 01:09:38,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:09:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-25 01:09:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 01:09:38,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:38,380 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] [2020-09-25 01:09:38,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:09:38,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:38,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1790244750, now seen corresponding path program 1 times [2020-09-25 01:09:38,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:38,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511004091] [2020-09-25 01:09:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:38,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:38,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:38,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 01:09:38,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 01:09:38,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:09:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:09:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:09:38,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:38,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:38,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:38,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:38,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:09:38,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 01:09:38,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:38,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:38,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:38,682 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 01:09:38,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511004091] [2020-09-25 01:09:38,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:38,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:09:38,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479490876] [2020-09-25 01:09:38,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:09:38,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:38,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:09:38,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:09:38,705 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 4 states. [2020-09-25 01:09:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:38,831 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-25 01:09:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:09:38,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 01:09:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:38,833 INFO L225 Difference]: With dead ends: 51 [2020-09-25 01:09:38,833 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 01:09:38,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 01:09:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 01:09:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-09-25 01:09:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 01:09:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-09-25 01:09:38,843 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 27 [2020-09-25 01:09:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:38,843 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-09-25 01:09:38,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:09:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-09-25 01:09:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 01:09:38,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:38,845 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 01:09:38,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:09:38,846 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash -189710638, now seen corresponding path program 1 times [2020-09-25 01:09:38,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:38,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423765761] [2020-09-25 01:09:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:39,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 01:09:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:09:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-09-25 01:09:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 01:09:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:09:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 01:09:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:40,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:40,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:40,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:09:40,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:40,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:09:40,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:40,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:40,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:40,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423765761] [2020-09-25 01:09:40,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:40,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 01:09:40,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016433844] [2020-09-25 01:09:40,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 01:09:40,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:40,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 01:09:40,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:09:40,453 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 12 states. [2020-09-25 01:09:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:40,974 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-25 01:09:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 01:09:40,975 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-09-25 01:09:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:40,977 INFO L225 Difference]: With dead ends: 60 [2020-09-25 01:09:40,977 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 01:09:40,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-09-25 01:09:40,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 01:09:40,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-25 01:09:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 01:09:40,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-09-25 01:09:41,000 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 36 [2020-09-25 01:09:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:41,001 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-09-25 01:09:41,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 01:09:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-09-25 01:09:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 01:09:41,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:41,007 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 01:09:41,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:09:41,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:41,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1586350990, now seen corresponding path program 2 times [2020-09-25 01:09:41,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:41,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322523371] [2020-09-25 01:09:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:41,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:46,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 01:09:46,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:09:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 01:09:46,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 01:09:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:09:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 01:09:46,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:46,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:46,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:46,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:09:46,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:09:46,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:46,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322523371] [2020-09-25 01:09:46,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:46,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 01:09:46,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331408165] [2020-09-25 01:09:46,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 01:09:46,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:46,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 01:09:46,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-09-25 01:09:46,580 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 18 states. [2020-09-25 01:09:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:47,271 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-09-25 01:09:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 01:09:47,272 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-09-25 01:09:47,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:47,273 INFO L225 Difference]: With dead ends: 69 [2020-09-25 01:09:47,273 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 01:09:47,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 01:09:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 01:09:47,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-25 01:09:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 01:09:47,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-09-25 01:09:47,283 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 45 [2020-09-25 01:09:47,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:47,283 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-09-25 01:09:47,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 01:09:47,283 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-09-25 01:09:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 01:09:47,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:47,285 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 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 01:09:47,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:09:47,285 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:47,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:47,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1138463442, now seen corresponding path program 3 times [2020-09-25 01:09:47,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:47,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177453566] [2020-09-25 01:09:47,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:49,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 01:09:52,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:09:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 01:09:52,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 01:09:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:09:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 01:09:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:53,281 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-09-25 01:09:53,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:53,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:53,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:09:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:09:53,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:09:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:53,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177453566] [2020-09-25 01:09:53,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:09:53,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 01:09:53,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702742101] [2020-09-25 01:09:53,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 01:09:53,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:53,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 01:09:53,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-09-25 01:09:53,504 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 24 states. [2020-09-25 01:09:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:54,590 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-09-25 01:09:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 01:09:54,818 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 54 [2020-09-25 01:09:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:54,821 INFO L225 Difference]: With dead ends: 78 [2020-09-25 01:09:54,821 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 01:09:54,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=326, Invalid=1654, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 01:09:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 01:09:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-25 01:09:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 01:09:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2020-09-25 01:09:54,830 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 54 [2020-09-25 01:09:54,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:54,831 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2020-09-25 01:09:54,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 01:09:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2020-09-25 01:09:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 01:09:54,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:54,833 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 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 01:09:54,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:09:54,834 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:54,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:54,834 INFO L82 PathProgramCache]: Analyzing trace with hash -626630542, now seen corresponding path program 4 times [2020-09-25 01:09:54,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:54,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522201459] [2020-09-25 01:09:54,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:54,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:54,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:57,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:59,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:59,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 01:09:59,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 01:09:59,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 01:09:59,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 01:09:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 01:09:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 01:09:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:00,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:00,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:00,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:00,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:10:00,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:00,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 01:10:00,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:10:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:10:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 01:10:00,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522201459] [2020-09-25 01:10:00,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:10:00,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 01:10:00,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234243588] [2020-09-25 01:10:00,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 01:10:00,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:00,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 01:10:00,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-09-25 01:10:00,646 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 18 states. [2020-09-25 01:10:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:02,081 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-09-25 01:10:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 01:10:02,082 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-09-25 01:10:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:02,082 INFO L225 Difference]: With dead ends: 64 [2020-09-25 01:10:02,082 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:10:02,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 01:10:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:10:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:10:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:10:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:10:02,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2020-09-25 01:10:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:02,086 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:10:02,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 01:10:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:10:02,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:10:02,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:10:02,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:10:02,389 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 01:10:02,389 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 01:10:02,390 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:02,390 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= |old(#length)| |#length|) (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |~#y~0.base| |old(~#y~0.base)|)) [2020-09-25 01:10:02,390 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 01:10:02,390 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 01:10:02,391 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 01:10:02,391 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 01:10:02,391 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-25 01:10:02,391 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-25 01:10:02,391 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-25 01:10:02,391 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:02,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:02,392 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-09-25 01:10:02,392 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:10:02,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:02,392 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 23) no Hoare annotation was computed. [2020-09-25 01:10:02,392 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 01:10:02,392 INFO L268 CegarLoopResult]: For program point L19-1(lines 19 20) no Hoare annotation was computed. [2020-09-25 01:10:02,393 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 01:10:02,393 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 01:10:02,393 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 01:10:02,393 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 23) no Hoare annotation was computed. [2020-09-25 01:10:02,393 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 01:10:02,393 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 01:10:02,394 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-25 01:10:02,394 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 01:10:02,394 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 01:10:02,394 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2020-09-25 01:10:02,394 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 8 23) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-09-25 01:10:02,394 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 01:10:02,395 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-09-25 01:10:02,395 INFO L268 CegarLoopResult]: For program point L16(lines 8 23) no Hoare annotation was computed. [2020-09-25 01:10:02,395 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 01:10:02,395 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 01:10:02,395 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 01:10:02,395 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2020-09-25 01:10:02,395 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 01:10:02,396 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-25 01:10:02,396 INFO L264 CegarLoopResult]: At program point L12-5(lines 12 15) the Hoare annotation is: (let ((.cse4 (select |#memory_int| |~#x~0.base|)) (.cse5 ((as const (Array Int Int)) 0)) (.cse6 (+ |~#x~0.offset| 1))) (let ((.cse1 (= |~#x~0.base| |~#y~0.base|)) (.cse2 (<= .cse6 |~#y~0.offset|)) (.cse3 (<= |~#y~0.offset| .cse6)) (.cse0 (= .cse4 .cse5))) (or (not (= |old(~i~0)| 0)) (and .cse0 .cse1 (< ~i~0 1) .cse2 .cse3) (and .cse1 (not (= (select .cse4 (+ ~i~0 |~#x~0.offset|)) 0)) .cse2 .cse3) (and .cse0 (= ~i~0 0)) (not (= .cse5 (select |old(#memory_int)| |~#x~0.base|)))))) [2020-09-25 01:10:02,396 INFO L268 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-09-25 01:10:02,407 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-09-25 01:10:02,412 INFO L168 Benchmark]: Toolchain (without parser) took 25911.13 ms. Allocated memory was 140.0 MB in the beginning and 373.3 MB in the end (delta: 233.3 MB). Free memory was 102.0 MB in the beginning and 259.4 MB in the end (delta: -157.4 MB). Peak memory consumption was 75.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:02,413 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-25 01:10:02,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.25 ms. Allocated memory is still 140.0 MB. Free memory was 101.2 MB in the beginning and 91.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:02,414 INFO L168 Benchmark]: Boogie Preprocessor took 133.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.4 MB in the beginning and 180.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:02,415 INFO L168 Benchmark]: RCFGBuilder took 364.10 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 164.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:02,416 INFO L168 Benchmark]: TraceAbstraction took 25094.35 ms. Allocated memory was 202.9 MB in the beginning and 373.3 MB in the end (delta: 170.4 MB). Free memory was 164.9 MB in the beginning and 259.4 MB in the end (delta: -94.5 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:02,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 119.8 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.25 ms. Allocated memory is still 140.0 MB. Free memory was 101.2 MB in the beginning and 91.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.4 MB in the beginning and 180.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.10 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 164.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25094.35 ms. Allocated memory was 202.9 MB in the beginning and 373.3 MB in the end (delta: 170.4 MB). Free memory was 164.9 MB in the beginning and 259.4 MB in the end (delta: -94.5 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...