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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/pipeline.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:34:09,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:34:09,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:34:09,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:34:09,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:34:09,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:34:09,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:34:09,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:34:09,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:34:09,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:34:09,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:34:09,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:34:09,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:34:09,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:34:09,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:34:09,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:34:09,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:34:09,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:34:09,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:34:09,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:34:09,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:34:09,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:34:09,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:34:09,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:34:09,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 06:34:09,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:34:09,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:34:09,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:34:09,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 06:34:09,975 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:34:09,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:34:09,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:34:09,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:34:09,977 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:34:09,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:34:09,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:34:09,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:34:09,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:34:09,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:34:09,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:34:09,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:34:09,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:34:09,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:34:09,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:34:09,982 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:34:09,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:34:09,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:34:09,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:34:09,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:34:09,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:34:09,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:34:09,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:34:09,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:34:09,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:34:09,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:34:09,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:34:09,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:34:09,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:34:10,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:34:10,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:34:10,037 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:34:10,038 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:34:10,039 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:34:10,039 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pipeline.cil-1.c [2019-09-08 06:34:10,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6d42a06/434f63b816c84780b05781ac34fa5c43/FLAG9008d5c7b [2019-09-08 06:34:10,594 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:34:10,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pipeline.cil-1.c [2019-09-08 06:34:10,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6d42a06/434f63b816c84780b05781ac34fa5c43/FLAG9008d5c7b [2019-09-08 06:34:10,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e6d42a06/434f63b816c84780b05781ac34fa5c43 [2019-09-08 06:34:10,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:34:10,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:34:10,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:34:10,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:34:10,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:34:10,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:34:10" (1/1) ... [2019-09-08 06:34:10,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6d7b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:10, skipping insertion in model container [2019-09-08 06:34:10,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:34:10" (1/1) ... [2019-09-08 06:34:10,974 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:34:11,015 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:34:11,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:34:11,265 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:34:11,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:34:11,513 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:34:11,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11 WrapperNode [2019-09-08 06:34:11,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:34:11,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:34:11,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:34:11,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:34:11,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... [2019-09-08 06:34:11,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... [2019-09-08 06:34:11,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... [2019-09-08 06:34:11,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... [2019-09-08 06:34:11,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... [2019-09-08 06:34:11,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... [2019-09-08 06:34:11,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... [2019-09-08 06:34:11,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:34:11,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:34:11,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:34:11,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:34:11,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-08 06:34:11,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:34:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:34:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-09-08 06:34:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure N_generate [2019-09-08 06:34:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure S1_addsub [2019-09-08 06:34:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure S2_presdbl [2019-09-08 06:34:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure S3_zero [2019-09-08 06:34:11,639 INFO L138 BoogieDeclarations]: Found implementation of procedure D_print [2019-09-08 06:34:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-09-08 06:34:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-09-08 06:34:11,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:34:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:34:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 06:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-09-08 06:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure N_generate [2019-09-08 06:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure S1_addsub [2019-09-08 06:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure S2_presdbl [2019-09-08 06:34:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure S3_zero [2019-09-08 06:34:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure D_print [2019-09-08 06:34:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-09-08 06:34:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-09-08 06:34:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:34:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:34:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:34:12,462 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:34:12,462 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-08 06:34:12,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:34:12 BoogieIcfgContainer [2019-09-08 06:34:12,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:34:12,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:34:12,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:34:12,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:34:12,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:34:10" (1/3) ... [2019-09-08 06:34:12,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50485df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:34:12, skipping insertion in model container [2019-09-08 06:34:12,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:34:11" (2/3) ... [2019-09-08 06:34:12,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50485df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:34:12, skipping insertion in model container [2019-09-08 06:34:12,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:34:12" (3/3) ... [2019-09-08 06:34:12,479 INFO L109 eAbstractionObserver]: Analyzing ICFG pipeline.cil-1.c [2019-09-08 06:34:12,490 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:34:12,512 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:34:12,530 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:34:12,560 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:34:12,561 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:34:12,561 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:34:12,561 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:34:12,561 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:34:12,562 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:34:12,562 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:34:12,562 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:34:12,562 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:34:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-09-08 06:34:12,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-08 06:34:12,603 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:12,604 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:34:12,607 INFO L418 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:12,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:12,613 INFO L82 PathProgramCache]: Analyzing trace with hash -448734168, now seen corresponding path program 1 times [2019-09-08 06:34:12,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:12,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:12,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:12,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:12,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 06:34:13,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:13,068 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:13,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:13,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 1 conjunts are in the unsatisfiable core [2019-09-08 06:34:13,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:34:13,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:13,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-08 06:34:13,417 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 06:34:13,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 06:34:13,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:34:13,435 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2019-09-08 06:34:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:13,615 INFO L93 Difference]: Finished difference Result 352 states and 593 transitions. [2019-09-08 06:34:13,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 06:34:13,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2019-09-08 06:34:13,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:13,631 INFO L225 Difference]: With dead ends: 352 [2019-09-08 06:34:13,632 INFO L226 Difference]: Without dead ends: 176 [2019-09-08 06:34:13,638 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:34:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-09-08 06:34:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2019-09-08 06:34:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-09-08 06:34:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 287 transitions. [2019-09-08 06:34:13,698 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 287 transitions. Word has length 99 [2019-09-08 06:34:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:13,698 INFO L475 AbstractCegarLoop]: Abstraction has 176 states and 287 transitions. [2019-09-08 06:34:13,699 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 06:34:13,699 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 287 transitions. [2019-09-08 06:34:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:13,708 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:13,709 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:13,709 INFO L418 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:13,709 INFO L82 PathProgramCache]: Analyzing trace with hash 829947534, now seen corresponding path program 1 times [2019-09-08 06:34:13,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:13,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:13,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:13,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:13,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-08 06:34:13,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:13,989 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:14,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:14,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:14,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-08 06:34:14,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:14,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-09-08 06:34:14,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 06:34:14,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 06:34:14,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 06:34:14,294 INFO L87 Difference]: Start difference. First operand 176 states and 287 transitions. Second operand 5 states. [2019-09-08 06:34:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:14,428 INFO L93 Difference]: Finished difference Result 345 states and 569 transitions. [2019-09-08 06:34:14,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 06:34:14,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2019-09-08 06:34:14,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:14,432 INFO L225 Difference]: With dead ends: 345 [2019-09-08 06:34:14,432 INFO L226 Difference]: Without dead ends: 176 [2019-09-08 06:34:14,435 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-09-08 06:34:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2019-09-08 06:34:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-09-08 06:34:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 285 transitions. [2019-09-08 06:34:14,454 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 285 transitions. Word has length 201 [2019-09-08 06:34:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:14,454 INFO L475 AbstractCegarLoop]: Abstraction has 176 states and 285 transitions. [2019-09-08 06:34:14,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 06:34:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 285 transitions. [2019-09-08 06:34:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:14,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:14,461 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:14,462 INFO L418 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:14,462 INFO L82 PathProgramCache]: Analyzing trace with hash 698159118, now seen corresponding path program 1 times [2019-09-08 06:34:14,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:14,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:14,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:14,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:14,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 06:34:14,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:14,695 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:34:14,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:14,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:14,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:34:14,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:14,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2019-09-08 06:34:14,945 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 06:34:14,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 06:34:14,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:34:14,946 INFO L87 Difference]: Start difference. First operand 176 states and 285 transitions. Second operand 4 states. [2019-09-08 06:34:15,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:15,042 INFO L93 Difference]: Finished difference Result 345 states and 565 transitions. [2019-09-08 06:34:15,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 06:34:15,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2019-09-08 06:34:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:15,044 INFO L225 Difference]: With dead ends: 345 [2019-09-08 06:34:15,044 INFO L226 Difference]: Without dead ends: 176 [2019-09-08 06:34:15,045 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:34:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-09-08 06:34:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2019-09-08 06:34:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-09-08 06:34:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 284 transitions. [2019-09-08 06:34:15,073 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 284 transitions. Word has length 201 [2019-09-08 06:34:15,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:15,073 INFO L475 AbstractCegarLoop]: Abstraction has 176 states and 284 transitions. [2019-09-08 06:34:15,073 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 06:34:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 284 transitions. [2019-09-08 06:34:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:15,077 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:15,077 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:15,077 INFO L418 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:15,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:15,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1269415186, now seen corresponding path program 1 times [2019-09-08 06:34:15,078 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:15,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:15,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:15,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:15,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:15,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:15,209 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:15,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:15,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-08 06:34:15,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-09-08 06:34:15,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:15,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:15,467 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:15,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:15,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:15,468 INFO L87 Difference]: Start difference. First operand 176 states and 284 transitions. Second operand 6 states. [2019-09-08 06:34:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:15,826 INFO L93 Difference]: Finished difference Result 545 states and 930 transitions. [2019-09-08 06:34:15,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 06:34:15,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:15,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:15,832 INFO L225 Difference]: With dead ends: 545 [2019-09-08 06:34:15,832 INFO L226 Difference]: Without dead ends: 376 [2019-09-08 06:34:15,834 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:15,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-09-08 06:34:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 260. [2019-09-08 06:34:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2019-09-08 06:34:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 427 transitions. [2019-09-08 06:34:15,892 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 427 transitions. Word has length 201 [2019-09-08 06:34:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:15,892 INFO L475 AbstractCegarLoop]: Abstraction has 260 states and 427 transitions. [2019-09-08 06:34:15,892 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 427 transitions. [2019-09-08 06:34:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:15,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:15,896 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:15,896 INFO L418 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:15,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1033837842, now seen corresponding path program 1 times [2019-09-08 06:34:15,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:15,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:15,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:15,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:15,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:15,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:15,998 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:16,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:16,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-08 06:34:16,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-09-08 06:34:16,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:16,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:16,245 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:16,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:16,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:16,245 INFO L87 Difference]: Start difference. First operand 260 states and 427 transitions. Second operand 6 states. [2019-09-08 06:34:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:16,611 INFO L93 Difference]: Finished difference Result 867 states and 1489 transitions. [2019-09-08 06:34:16,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 06:34:16,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:16,616 INFO L225 Difference]: With dead ends: 867 [2019-09-08 06:34:16,616 INFO L226 Difference]: Without dead ends: 614 [2019-09-08 06:34:16,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-09-08 06:34:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 416. [2019-09-08 06:34:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2019-09-08 06:34:16,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 673 transitions. [2019-09-08 06:34:16,638 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 673 transitions. Word has length 201 [2019-09-08 06:34:16,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:16,639 INFO L475 AbstractCegarLoop]: Abstraction has 416 states and 673 transitions. [2019-09-08 06:34:16,639 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 673 transitions. [2019-09-08 06:34:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:16,643 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:16,643 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:16,643 INFO L418 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash 2107473426, now seen corresponding path program 1 times [2019-09-08 06:34:16,644 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:16,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:16,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:16,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:16,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:16,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:16,771 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:16,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:16,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:16,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:34:17,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:17,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:17,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:17,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:17,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:17,026 INFO L87 Difference]: Start difference. First operand 416 states and 673 transitions. Second operand 6 states. [2019-09-08 06:34:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:17,455 INFO L93 Difference]: Finished difference Result 1833 states and 3026 transitions. [2019-09-08 06:34:17,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:34:17,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:17,471 INFO L225 Difference]: With dead ends: 1833 [2019-09-08 06:34:17,471 INFO L226 Difference]: Without dead ends: 1424 [2019-09-08 06:34:17,478 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2019-09-08 06:34:17,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 984. [2019-09-08 06:34:17,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-09-08 06:34:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1579 transitions. [2019-09-08 06:34:17,549 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1579 transitions. Word has length 201 [2019-09-08 06:34:17,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:17,550 INFO L475 AbstractCegarLoop]: Abstraction has 984 states and 1579 transitions. [2019-09-08 06:34:17,550 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1579 transitions. [2019-09-08 06:34:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:17,562 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:17,563 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:17,563 INFO L418 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:17,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:17,564 INFO L82 PathProgramCache]: Analyzing trace with hash 574836242, now seen corresponding path program 1 times [2019-09-08 06:34:17,564 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:17,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:17,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:17,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:17,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:17,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:17,758 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:34:17,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:17,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:17,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-08 06:34:18,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:18,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:18,018 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:18,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:18,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:18,019 INFO L87 Difference]: Start difference. First operand 984 states and 1579 transitions. Second operand 6 states. [2019-09-08 06:34:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:18,512 INFO L93 Difference]: Finished difference Result 4339 states and 7082 transitions. [2019-09-08 06:34:18,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:34:18,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:18,554 INFO L225 Difference]: With dead ends: 4339 [2019-09-08 06:34:18,554 INFO L226 Difference]: Without dead ends: 3362 [2019-09-08 06:34:18,574 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2019-09-08 06:34:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2376. [2019-09-08 06:34:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2376 states. [2019-09-08 06:34:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 3775 transitions. [2019-09-08 06:34:18,784 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 3775 transitions. Word has length 201 [2019-09-08 06:34:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:18,786 INFO L475 AbstractCegarLoop]: Abstraction has 2376 states and 3775 transitions. [2019-09-08 06:34:18,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 3775 transitions. [2019-09-08 06:34:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:18,805 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:18,805 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:18,806 INFO L418 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:18,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1772322322, now seen corresponding path program 1 times [2019-09-08 06:34:18,806 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:18,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:18,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:18,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:18,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:18,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:18,921 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:18,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:19,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:19,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 06:34:19,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:19,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:19,215 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:19,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:19,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:19,216 INFO L87 Difference]: Start difference. First operand 2376 states and 3775 transitions. Second operand 6 states. [2019-09-08 06:34:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:19,780 INFO L93 Difference]: Finished difference Result 10407 states and 16834 transitions. [2019-09-08 06:34:19,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:34:19,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:19,870 INFO L225 Difference]: With dead ends: 10407 [2019-09-08 06:34:19,871 INFO L226 Difference]: Without dead ends: 8038 [2019-09-08 06:34:19,933 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:19,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8038 states. [2019-09-08 06:34:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8038 to 5788. [2019-09-08 06:34:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5788 states. [2019-09-08 06:34:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5788 states to 5788 states and 9107 transitions. [2019-09-08 06:34:20,304 INFO L78 Accepts]: Start accepts. Automaton has 5788 states and 9107 transitions. Word has length 201 [2019-09-08 06:34:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:20,305 INFO L475 AbstractCegarLoop]: Abstraction has 5788 states and 9107 transitions. [2019-09-08 06:34:20,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5788 states and 9107 transitions. [2019-09-08 06:34:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:20,377 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:20,377 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:20,378 INFO L418 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1652732398, now seen corresponding path program 1 times [2019-09-08 06:34:20,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:20,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:20,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:20,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:20,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:20,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:20,477 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:20,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:20,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:20,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (10)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 06:34:20,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:20,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:20,737 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:20,739 INFO L87 Difference]: Start difference. First operand 5788 states and 9107 transitions. Second operand 6 states. [2019-09-08 06:34:21,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:21,689 INFO L93 Difference]: Finished difference Result 25047 states and 40330 transitions. [2019-09-08 06:34:21,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:34:21,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:21,893 INFO L225 Difference]: With dead ends: 25047 [2019-09-08 06:34:21,893 INFO L226 Difference]: Without dead ends: 19266 [2019-09-08 06:34:22,011 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19266 states. [2019-09-08 06:34:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19266 to 14072. [2019-09-08 06:34:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14072 states. [2019-09-08 06:34:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14072 states to 14072 states and 21951 transitions. [2019-09-08 06:34:23,610 INFO L78 Accepts]: Start accepts. Automaton has 14072 states and 21951 transitions. Word has length 201 [2019-09-08 06:34:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:23,610 INFO L475 AbstractCegarLoop]: Abstraction has 14072 states and 21951 transitions. [2019-09-08 06:34:23,611 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 14072 states and 21951 transitions. [2019-09-08 06:34:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:23,778 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:23,778 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:23,778 INFO L418 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:23,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:23,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1624670702, now seen corresponding path program 1 times [2019-09-08 06:34:23,779 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:23,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:23,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:23,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:23,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:23,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:23,881 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:23,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:24,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:24,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 06:34:24,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:24,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:24,114 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:24,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:24,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:24,115 INFO L87 Difference]: Start difference. First operand 14072 states and 21951 transitions. Second operand 6 states. [2019-09-08 06:34:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:25,799 INFO L93 Difference]: Finished difference Result 53629 states and 85846 transitions. [2019-09-08 06:34:25,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:34:25,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:26,280 INFO L225 Difference]: With dead ends: 53629 [2019-09-08 06:34:26,280 INFO L226 Difference]: Without dead ends: 39564 [2019-09-08 06:34:27,852 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39564 states. [2019-09-08 06:34:28,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39564 to 29916. [2019-09-08 06:34:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29916 states. [2019-09-08 06:34:29,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29916 states to 29916 states and 45599 transitions. [2019-09-08 06:34:29,803 INFO L78 Accepts]: Start accepts. Automaton has 29916 states and 45599 transitions. Word has length 201 [2019-09-08 06:34:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:29,804 INFO L475 AbstractCegarLoop]: Abstraction has 29916 states and 45599 transitions. [2019-09-08 06:34:29,804 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 29916 states and 45599 transitions. [2019-09-08 06:34:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:30,512 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:30,512 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:30,512 INFO L418 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1900022126, now seen corresponding path program 1 times [2019-09-08 06:34:30,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:30,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:30,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:30,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:30,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:30,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:30,648 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:30,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:30,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 1341 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:30,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 06:34:30,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:30,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:30,876 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:30,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:30,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:30,877 INFO L87 Difference]: Start difference. First operand 29916 states and 45599 transitions. Second operand 6 states. [2019-09-08 06:34:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:34:40,046 INFO L93 Difference]: Finished difference Result 107272 states and 179366 transitions. [2019-09-08 06:34:40,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:34:40,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:34:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:34:42,202 INFO L225 Difference]: With dead ends: 107272 [2019-09-08 06:34:42,203 INFO L226 Difference]: Without dead ends: 77363 [2019-09-08 06:34:43,779 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:34:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77363 states. [2019-09-08 06:34:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77363 to 60206. [2019-09-08 06:34:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60206 states. [2019-09-08 06:34:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60206 states to 60206 states and 93840 transitions. [2019-09-08 06:34:52,580 INFO L78 Accepts]: Start accepts. Automaton has 60206 states and 93840 transitions. Word has length 201 [2019-09-08 06:34:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:34:52,580 INFO L475 AbstractCegarLoop]: Abstraction has 60206 states and 93840 transitions. [2019-09-08 06:34:52,580 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:34:52,580 INFO L276 IsEmpty]: Start isEmpty. Operand 60206 states and 93840 transitions. [2019-09-08 06:34:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:34:58,933 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:34:58,933 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:34:58,933 INFO L418 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:34:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:34:58,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1072839278, now seen corresponding path program 1 times [2019-09-08 06:34:58,934 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:34:58,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:34:58,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:58,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:58,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:34:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:34:59,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:34:59,036 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:34:59,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:34:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:34:59,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:34:59,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:34:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 06:34:59,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:34:59,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:34:59,284 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:34:59,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:34:59,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:34:59,285 INFO L87 Difference]: Start difference. First operand 60206 states and 93840 transitions. Second operand 6 states. [2019-09-08 06:35:18,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:35:18,168 INFO L93 Difference]: Finished difference Result 215552 states and 401946 transitions. [2019-09-08 06:35:18,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 06:35:18,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2019-09-08 06:35:18,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:35:38,412 INFO L225 Difference]: With dead ends: 215552 [2019-09-08 06:35:38,412 INFO L226 Difference]: Without dead ends: 155353 [2019-09-08 06:35:41,688 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 06:35:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155353 states. [2019-09-08 06:36:01,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155353 to 121170. [2019-09-08 06:36:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121170 states. [2019-09-08 06:36:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121170 states to 121170 states and 203415 transitions. [2019-09-08 06:36:15,465 INFO L78 Accepts]: Start accepts. Automaton has 121170 states and 203415 transitions. Word has length 201 [2019-09-08 06:36:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:36:15,465 INFO L475 AbstractCegarLoop]: Abstraction has 121170 states and 203415 transitions. [2019-09-08 06:36:15,466 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 06:36:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 121170 states and 203415 transitions. [2019-09-08 06:36:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-09-08 06:36:41,489 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:36:41,489 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-08 06:36:41,490 INFO L418 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:36:41,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:36:41,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1447696018, now seen corresponding path program 1 times [2019-09-08 06:36:41,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:36:41,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:36:41,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:36:41,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:36:41,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:36:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:36:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 06:36:41,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 06:36:41,593 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 06:36:41,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 06:36:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:36:41,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 06:36:41,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 06:36:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-08 06:36:41,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 06:36:41,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-09-08 06:36:41,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 06:36:41,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 06:36:41,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-08 06:36:41,798 INFO L87 Difference]: Start difference. First operand 121170 states and 203415 transitions. Second operand 6 states.