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/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:01:08,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:01:08,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:01:08,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:01:08,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:01:08,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:01:08,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:01:08,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:01:08,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:01:08,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:01:08,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:01:08,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:01:08,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:01:08,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:01:08,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:01:08,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:01:08,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:01:08,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:01:08,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:01:08,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:01:08,526 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 [2019-09-20 13:01:08,541 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:01:08,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:01:08,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:01:08,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:01:08,543 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:01:08,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:01:08,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:01:08,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:01:08,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:01:08,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:01:08,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:01:08,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:01:08,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:01:08,545 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:01:08,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:01:08,545 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:01:08,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:01:08,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:01:08,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:01:08,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:01:08,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:01:08,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:01:08,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:01:08,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:01:08,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:01:08,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:01:08,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:01:08,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:01:08,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:01:08,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:01:08,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:01:08,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:01:08,601 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:01:08,602 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:01:08,602 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2019-09-20 13:01:08,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4f3aca2/a0080e5ee8c84ef59a1fe03d4faa0a90/FLAG0c5ed0ab7 [2019-09-20 13:01:09,128 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:01:09,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test25-2.c [2019-09-20 13:01:09,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4f3aca2/a0080e5ee8c84ef59a1fe03d4faa0a90/FLAG0c5ed0ab7 [2019-09-20 13:01:09,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4f3aca2/a0080e5ee8c84ef59a1fe03d4faa0a90 [2019-09-20 13:01:09,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:01:09,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:01:09,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:09,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:01:09,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:01:09,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18ed1223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09, skipping insertion in model container [2019-09-20 13:01:09,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,544 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:01:09,561 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:01:09,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:09,764 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:01:09,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:01:09,889 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:01:09,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09 WrapperNode [2019-09-20 13:01:09,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:01:09,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:01:09,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:01:09,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:01:09,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (1/1) ... [2019-09-20 13:01:09,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:01:09,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:01:09,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:01:09,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:01:09,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (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 [2019-09-20 13:01:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:01:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:01:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-20 13:01:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:01:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:01:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:01:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-20 13:01:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:01:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:01:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:01:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:01:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:01:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:01:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:01:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:01:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:01:10,344 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:01:10,345 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-20 13:01:10,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:10 BoogieIcfgContainer [2019-09-20 13:01:10,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:01:10,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:01:10,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:01:10,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:01:10,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:01:09" (1/3) ... [2019-09-20 13:01:10,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219ed41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:10, skipping insertion in model container [2019-09-20 13:01:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:01:09" (2/3) ... [2019-09-20 13:01:10,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219ed41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:01:10, skipping insertion in model container [2019-09-20 13:01:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:01:10" (3/3) ... [2019-09-20 13:01:10,354 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2019-09-20 13:01:10,363 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:01:10,371 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:01:10,388 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:01:10,417 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:01:10,418 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:01:10,418 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:01:10,418 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:01:10,418 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:01:10,419 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:01:10,419 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:01:10,419 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:01:10,419 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:01:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-09-20 13:01:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:01:10,439 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:10,440 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:10,443 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:10,448 INFO L82 PathProgramCache]: Analyzing trace with hash -899836778, now seen corresponding path program 1 times [2019-09-20 13:01:10,449 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:10,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:10,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:10,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:10,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:10,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:01:10,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:01:10,598 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:01:10,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:01:10,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:01:10,616 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-09-20 13:01:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:10,640 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2019-09-20 13:01:10,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:01:10,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-20 13:01:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:10,655 INFO L225 Difference]: With dead ends: 42 [2019-09-20 13:01:10,656 INFO L226 Difference]: Without dead ends: 20 [2019-09-20 13:01:10,659 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:01:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-09-20 13:01:10,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-09-20 13:01:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-20 13:01:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-20 13:01:10,707 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2019-09-20 13:01:10,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:10,707 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-20 13:01:10,707 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:01:10,708 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-20 13:01:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:01:10,709 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:10,709 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:10,709 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:10,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:10,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1137678901, now seen corresponding path program 1 times [2019-09-20 13:01:10,710 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:10,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:10,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:10,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:10,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:10,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:01:10,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:01:10,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:01:10,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:01:10,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:01:10,810 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2019-09-20 13:01:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:10,858 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-09-20 13:01:10,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:01:10,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-09-20 13:01:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:10,862 INFO L225 Difference]: With dead ends: 34 [2019-09-20 13:01:10,862 INFO L226 Difference]: Without dead ends: 22 [2019-09-20 13:01:10,863 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:01:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-20 13:01:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-09-20 13:01:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-20 13:01:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-20 13:01:10,873 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2019-09-20 13:01:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:10,874 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-20 13:01:10,874 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:01:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-20 13:01:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-20 13:01:10,875 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:10,876 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:10,876 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:10,877 INFO L82 PathProgramCache]: Analyzing trace with hash 278779309, now seen corresponding path program 1 times [2019-09-20 13:01:10,877 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:10,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:10,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:10,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:10,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:11,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:11,003 INFO L224 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 [2019-09-20 13:01:11,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:11,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-20 13:01:11,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:11,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:11,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-09-20 13:01:11,147 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:01:11,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:01:11,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:01:11,149 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-20 13:01:11,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:11,201 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-09-20 13:01:11,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:01:11,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-20 13:01:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:11,203 INFO L225 Difference]: With dead ends: 36 [2019-09-20 13:01:11,203 INFO L226 Difference]: Without dead ends: 24 [2019-09-20 13:01:11,204 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:01:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-20 13:01:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-09-20 13:01:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-20 13:01:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-09-20 13:01:11,212 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20 [2019-09-20 13:01:11,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:11,213 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-09-20 13:01:11,213 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:01:11,213 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-09-20 13:01:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-20 13:01:11,214 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:11,214 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:11,214 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:11,215 INFO L82 PathProgramCache]: Analyzing trace with hash -9513713, now seen corresponding path program 2 times [2019-09-20 13:01:11,215 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:11,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:11,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:11,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:11,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:01:11,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:11,305 INFO L224 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) [2019-09-20 13:01:11,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:01:11,380 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-09-20 13:01:11,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:11,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-20 13:01:11,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:11,513 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:01:11,521 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:11,522 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-09-20 13:01:11,523 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:11,531 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:11,533 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:01:11,534 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:5 [2019-09-20 13:01:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-20 13:01:11,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:01:11,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-20 13:01:11,555 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:01:11,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:01:11,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:01:11,556 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 8 states. [2019-09-20 13:01:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:11,687 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-09-20 13:01:11,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:01:11,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-09-20 13:01:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:11,689 INFO L225 Difference]: With dead ends: 40 [2019-09-20 13:01:11,689 INFO L226 Difference]: Without dead ends: 28 [2019-09-20 13:01:11,690 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:01:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-20 13:01:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-09-20 13:01:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-20 13:01:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-09-20 13:01:11,696 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2019-09-20 13:01:11,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:11,697 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-09-20 13:01:11,697 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:01:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-09-20 13:01:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-20 13:01:11,698 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:11,713 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:11,713 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:11,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash -50594516, now seen corresponding path program 1 times [2019-09-20 13:01:11,718 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:11,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:11,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:11,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:01:11,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 13:01:11,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:11,827 INFO L224 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:01:11,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:11,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-20 13:01:11,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 13:01:11,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:11,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-09-20 13:01:11,913 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:01:11,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:01:11,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:01:11,914 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2019-09-20 13:01:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:11,959 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2019-09-20 13:01:11,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:01:11,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-09-20 13:01:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:11,961 INFO L225 Difference]: With dead ends: 44 [2019-09-20 13:01:11,961 INFO L226 Difference]: Without dead ends: 30 [2019-09-20 13:01:11,962 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:01:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-20 13:01:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-09-20 13:01:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-20 13:01:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-09-20 13:01:11,967 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2019-09-20 13:01:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:11,968 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-09-20 13:01:11,968 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:01:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-09-20 13:01:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-09-20 13:01:11,969 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:11,969 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:11,969 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:11,970 INFO L82 PathProgramCache]: Analyzing trace with hash 619997966, now seen corresponding path program 2 times [2019-09-20 13:01:11,970 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:11,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:11,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:11,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:01:11,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 13:01:12,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:12,112 INFO L224 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 [2019-09-20 13:01:12,143 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-20 13:01:12,186 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 13:01:12,186 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:12,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:01:12,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 13:01:12,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:12,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-09-20 13:01:12,219 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:01:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:01:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:01:12,220 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2019-09-20 13:01:12,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:12,274 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2019-09-20 13:01:12,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:01:12,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-09-20 13:01:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:12,276 INFO L225 Difference]: With dead ends: 46 [2019-09-20 13:01:12,276 INFO L226 Difference]: Without dead ends: 32 [2019-09-20 13:01:12,277 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:01:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-20 13:01:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-09-20 13:01:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-20 13:01:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2019-09-20 13:01:12,286 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28 [2019-09-20 13:01:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:12,287 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2019-09-20 13:01:12,287 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:01:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2019-09-20 13:01:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-20 13:01:12,289 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:12,289 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:12,289 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:12,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:12,290 INFO L82 PathProgramCache]: Analyzing trace with hash 814278768, now seen corresponding path program 3 times [2019-09-20 13:01:12,290 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:12,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:12,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:12,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:01:12,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-20 13:01:12,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:12,406 INFO L224 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 [2019-09-20 13:01:12,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:01:12,469 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-09-20 13:01:12,470 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:12,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 13:01:12,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:13,140 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:01:13,144 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:13,145 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-09-20 13:01:13,146 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:13,155 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:13,157 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:01:13,158 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:5 [2019-09-20 13:01:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-09-20 13:01:13,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:13,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-20 13:01:13,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-20 13:01:13,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-20 13:01:13,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-09-20 13:01:13,186 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 12 states. [2019-09-20 13:01:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:13,945 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2019-09-20 13:01:13,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-20 13:01:13,946 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2019-09-20 13:01:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:13,947 INFO L225 Difference]: With dead ends: 50 [2019-09-20 13:01:13,947 INFO L226 Difference]: Without dead ends: 36 [2019-09-20 13:01:13,948 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:01:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-20 13:01:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-09-20 13:01:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-20 13:01:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2019-09-20 13:01:13,955 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2019-09-20 13:01:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:13,955 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2019-09-20 13:01:13,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-20 13:01:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2019-09-20 13:01:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-09-20 13:01:13,957 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:13,957 INFO L407 BasicCegarLoop]: trace histogram [6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:13,957 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1119042125, now seen corresponding path program 4 times [2019-09-20 13:01:13,958 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:13,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:13,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:13,960 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:01:13,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-20 13:01:14,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:14,097 INFO L224 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 [2019-09-20 13:01:14,139 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-09-20 13:01:14,168 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-20 13:01:14,168 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:14,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-20 13:01:14,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:14,642 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:01:14,645 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:14,645 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2019-09-20 13:01:14,646 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:14,652 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:14,654 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:01:14,654 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:38, output treesize:5 [2019-09-20 13:01:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-09-20 13:01:14,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:14,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-09-20 13:01:14,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:01:14,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:01:14,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:01:14,678 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 14 states. [2019-09-20 13:01:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:16,948 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2019-09-20 13:01:16,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:01:16,953 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2019-09-20 13:01:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:16,954 INFO L225 Difference]: With dead ends: 56 [2019-09-20 13:01:16,954 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:01:16,954 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2019-09-20 13:01:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:01:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-09-20 13:01:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:01:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2019-09-20 13:01:16,960 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2019-09-20 13:01:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:16,961 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2019-09-20 13:01:16,961 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:01:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2019-09-20 13:01:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-20 13:01:16,962 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:16,962 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:16,963 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:16,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:16,963 INFO L82 PathProgramCache]: Analyzing trace with hash -820541462, now seen corresponding path program 5 times [2019-09-20 13:01:16,963 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:16,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:16,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:16,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:01:16,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-20 13:01:17,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:17,063 INFO L224 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:01:17,104 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-20 13:01:20,244 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-09-20 13:01:20,244 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:20,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-20 13:01:20,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-20 13:01:20,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:20,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-09-20 13:01:20,289 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-20 13:01:20,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-20 13:01:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-09-20 13:01:20,290 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 11 states. [2019-09-20 13:01:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:20,349 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2019-09-20 13:01:20,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:01:20,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2019-09-20 13:01:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:20,353 INFO L225 Difference]: With dead ends: 60 [2019-09-20 13:01:20,353 INFO L226 Difference]: Without dead ends: 42 [2019-09-20 13:01:20,354 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-09-20 13:01:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-09-20 13:01:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-09-20 13:01:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:01:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2019-09-20 13:01:20,359 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38 [2019-09-20 13:01:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:20,359 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2019-09-20 13:01:20,359 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-20 13:01:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2019-09-20 13:01:20,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-20 13:01:20,360 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:01:20,361 INFO L407 BasicCegarLoop]: trace histogram [8, 8, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:01:20,361 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:01:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:01:20,361 INFO L82 PathProgramCache]: Analyzing trace with hash 478163660, now seen corresponding path program 6 times [2019-09-20 13:01:20,361 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:01:20,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:01:20,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:20,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:01:20,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:01:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:01:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-20 13:01:20,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:01:20,472 INFO L224 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 [2019-09-20 13:01:20,496 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-09-20 13:01:20,585 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-09-20 13:01:20,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:01:20,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 37 conjunts are in the unsatisfiable core [2019-09-20 13:01:20,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:01:20,608 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2019-09-20 13:01:20,608 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:20,613 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:20,613 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:01:20,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2019-09-20 13:01:20,648 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-20 13:01:20,649 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:20,666 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:20,675 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-09-20 13:01:20,675 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:01:20,698 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:01:20,699 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:01:20,700 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:50, output treesize:28 [2019-09-20 13:01:22,854 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_main_~#cont~0.base_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_main_~#cont~0.base_BEFORE_CALL_1|) 0) |v_main_~#cont~0.base_BEFORE_CALL_1|))) is different from true [2019-09-20 13:01:28,929 WARN L191 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-20 13:01:28,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:01:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-09-20 13:01:29,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:01:29,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-09-20 13:01:29,030 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:01:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:01:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=270, Unknown=1, NotChecked=34, Total=380 [2019-09-20 13:01:29,030 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 20 states. [2019-09-20 13:01:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:01:29,647 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2019-09-20 13:01:29,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-20 13:01:29,647 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2019-09-20 13:01:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:01:29,648 INFO L225 Difference]: With dead ends: 60 [2019-09-20 13:01:29,648 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:01:29,649 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=227, Invalid=898, Unknown=1, NotChecked=64, Total=1190 [2019-09-20 13:01:29,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:01:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:01:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:01:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:01:29,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-09-20 13:01:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:01:29,650 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:01:29,650 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:01:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:01:29,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:01:29,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:01:29,748 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-20 13:01:29,748 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-20 13:01:29,748 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 13:01:29,748 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 13:01:29,748 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 13:01:29,748 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 13:01:29,749 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 13:01:29,749 INFO L439 ceAbstractionStarter]: At program point L37-4(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|)) (.cse1 (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4))) (let ((.cse2 (select (select |#memory_int| .cse0) .cse1))) (and (= main_~pa~0.base .cse0) (= |main_~#cont~0.offset| 0) (= main_~pa~0.offset .cse1) (<= main_~i~0 .cse2) (not (= .cse0 |main_~#cont~0.base|)) (<= .cse2 main_~i~0) (not (= |main_~#array~0.base| |main_~#cont~0.base|))))) [2019-09-20 13:01:29,749 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2019-09-20 13:01:29,749 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 20 50) no Hoare annotation was computed. [2019-09-20 13:01:29,749 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 30) the Hoare annotation is: (and (= |main_~#cont~0.offset| 0) (not (= |main_~#array~0.base| |main_~#cont~0.base|))) [2019-09-20 13:01:29,749 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 21 50) no Hoare annotation was computed. [2019-09-20 13:01:29,750 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 20 50) no Hoare annotation was computed. [2019-09-20 13:01:29,750 INFO L443 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2019-09-20 13:01:29,750 INFO L443 ceAbstractionStarter]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2019-09-20 13:01:29,750 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 44) no Hoare annotation was computed. [2019-09-20 13:01:29,750 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 20 50) the Hoare annotation is: true [2019-09-20 13:01:29,750 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-09-20 13:01:29,750 INFO L439 ceAbstractionStarter]: At program point L41(lines 21 50) the Hoare annotation is: false [2019-09-20 13:01:29,751 INFO L443 ceAbstractionStarter]: For program point L37-1(lines 37 39) no Hoare annotation was computed. [2019-09-20 13:01:29,751 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 43) no Hoare annotation was computed. [2019-09-20 13:01:29,751 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 37 39) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#cont~0.base|) |main_~#cont~0.offset|))) (and (= main_~pa~0.base .cse0) (= |main_~#cont~0.offset| 0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (= main_~pa~0.offset (+ (select (select |#memory_$Pointer$.offset| |main_~#cont~0.base|) |main_~#cont~0.offset|) 4)) (not (= .cse0 |main_~#cont~0.base|)) (not (= |main_~#array~0.base| |main_~#cont~0.base|)))) [2019-09-20 13:01:29,751 INFO L446 ceAbstractionStarter]: At program point checkENTRY(lines 15 18) the Hoare annotation is: true [2019-09-20 13:01:29,751 INFO L443 ceAbstractionStarter]: For program point checkFINAL(lines 15 18) no Hoare annotation was computed. [2019-09-20 13:01:29,751 INFO L443 ceAbstractionStarter]: For program point checkEXIT(lines 15 18) no Hoare annotation was computed. [2019-09-20 13:01:29,761 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,762 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-09-20 13:01:29,762 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,764 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,764 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:29,765 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,765 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,767 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,768 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-09-20 13:01:29,768 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,768 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,769 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:29,769 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,769 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:01:29 BoogieIcfgContainer [2019-09-20 13:01:29,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:01:29,774 INFO L168 Benchmark]: Toolchain (without parser) took 20246.66 ms. Allocated memory was 138.4 MB in the beginning and 267.4 MB in the end (delta: 129.0 MB). Free memory was 84.8 MB in the beginning and 129.9 MB in the end (delta: -45.1 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:29,775 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 103.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:01:29,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.62 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 84.6 MB in the beginning and 176.4 MB in the end (delta: -91.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:29,777 INFO L168 Benchmark]: Boogie Preprocessor took 44.55 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 174.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:29,778 INFO L168 Benchmark]: RCFGBuilder took 410.45 ms. Allocated memory is still 199.2 MB. Free memory was 174.5 MB in the beginning and 157.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:29,778 INFO L168 Benchmark]: TraceAbstraction took 19425.32 ms. Allocated memory was 199.2 MB in the beginning and 267.4 MB in the end (delta: 68.2 MB). Free memory was 157.5 MB in the beginning and 129.9 MB in the end (delta: 27.5 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:01:29,782 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 138.4 MB. Free memory was 103.2 MB in the beginning and 103.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.62 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 84.6 MB in the beginning and 176.4 MB in the end (delta: -91.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.55 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 174.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.45 ms. Allocated memory is still 199.2 MB. Free memory was 174.5 MB in the beginning and 157.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19425.32 ms. Allocated memory was 199.2 MB in the beginning and 267.4 MB in the end (delta: 68.2 MB). Free memory was 157.5 MB in the beginning and 129.9 MB in the end (delta: 27.5 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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 - InvariantResult [Line: 37]: Loop Invariant [2019-09-20 13:01:29,791 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,791 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-09-20 13:01:29,792 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,792 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,792 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:29,792 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,793 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,793 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,793 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2019-09-20 13:01:29,794 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2019-09-20 13:01:29,794 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,794 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-09-20 13:01:29,794 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2019-09-20 13:01:29,795 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: ((((pa == #memory_$Pointer$[cont][cont] && cont == 0) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == #memory_$Pointer$[cont][cont] + 4) && !(#memory_$Pointer$[cont][cont] == cont)) && !(array == cont) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: cont == 0 && !(array == cont) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 19.3s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 180 SDtfs, 58 SDslu, 638 SDs, 0 SdLazy, 376 SolverSat, 18 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 19 PreInvPairs, 33 NumberOfFragments, 119 HoareAnnotationTreeSize, 19 FomulaSimplifications, 242 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 511 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 493 ConstructedInterpolants, 12 QuantifiedInterpolants, 54011 SizeOfPredicates, 55 NumberOfNonLiveVariables, 1056 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 190/480 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...