java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 04:16:11,698 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 04:16:11,701 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 04:16:11,719 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 04:16:11,719 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 04:16:11,720 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 04:16:11,721 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 04:16:11,724 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 04:16:11,725 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 04:16:11,727 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 04:16:11,728 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 04:16:11,728 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 04:16:11,729 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 04:16:11,730 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 04:16:11,731 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 04:16:11,735 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 04:16:11,735 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 04:16:11,737 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 04:16:11,751 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 04:16:11,752 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 04:16:11,753 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 04:16:11,754 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 04:16:11,756 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 04:16:11,770 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 04:16:11,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 04:16:11,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 04:16:11,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 04:16:11,795 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 04:16:11,796 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 04:16:11,796 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 04:16:11,796 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 04:16:11,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 04:16:11,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 04:16:11,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 04:16:11,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 04:16:11,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 04:16:11,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 04:16:11,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 04:16:11,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 04:16:11,798 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 04:16:11,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 04:16:11,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 04:16:11,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 04:16:11,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 04:16:11,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 04:16:11,799 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 04:16:11,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 04:16:11,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 04:16:11,800 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 04:16:11,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 04:16:11,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 04:16:11,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 04:16:11,800 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 04:16:11,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 04:16:11,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 04:16:11,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 04:16:11,868 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 04:16:11,869 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 04:16:11,870 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-07-22 04:16:12,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/2d10e8981/c98c0941539c43d89a43593b8f7e1315/FLAG9214a7200 [2018-07-22 04:16:12,698 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 04:16:12,699 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-07-22 04:16:12,732 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/2d10e8981/c98c0941539c43d89a43593b8f7e1315/FLAG9214a7200 [2018-07-22 04:16:12,952 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/2d10e8981/c98c0941539c43d89a43593b8f7e1315 [2018-07-22 04:16:12,963 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 04:16:12,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 04:16:12,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 04:16:12,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 04:16:12,977 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 04:16:12,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:16:12" (1/1) ... [2018-07-22 04:16:12,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b53f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:12, skipping insertion in model container [2018-07-22 04:16:12,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:16:12" (1/1) ... [2018-07-22 04:16:13,288 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 04:16:14,146 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 04:16:14,166 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 04:16:15,045 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 04:16:15,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15 WrapperNode [2018-07-22 04:16:15,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 04:16:15,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 04:16:15,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 04:16:15,225 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 04:16:15,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:15,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:15,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 04:16:15,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 04:16:15,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 04:16:15,618 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 04:16:15,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:15,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:15,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:15,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:16,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:16,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:16,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... [2018-07-22 04:16:16,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 04:16:16,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 04:16:16,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 04:16:16,644 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 04:16:16,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (1/1) ... No working directory specified, using /storage/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 [2018-07-22 04:16:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 04:16:16,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 04:16:16,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 04:16:26,381 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 04:16:26,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:16:26 BoogieIcfgContainer [2018-07-22 04:16:26,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 04:16:26,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 04:16:26,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 04:16:26,387 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 04:16:26,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:16:12" (1/3) ... [2018-07-22 04:16:26,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f105ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:16:26, skipping insertion in model container [2018-07-22 04:16:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:16:15" (2/3) ... [2018-07-22 04:16:26,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f105ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:16:26, skipping insertion in model container [2018-07-22 04:16:26,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:16:26" (3/3) ... [2018-07-22 04:16:26,391 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label04_false-unreach-call.c [2018-07-22 04:16:26,400 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 04:16:26,408 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 04:16:26,472 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 04:16:26,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 04:16:26,473 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 04:16:26,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 04:16:26,473 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 04:16:26,473 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 04:16:26,473 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 04:16:26,473 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 04:16:26,474 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 04:16:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-07-22 04:16:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-22 04:16:26,537 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:16:26,538 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:16:26,538 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:16:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-07-22 04:16:26,547 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:16:26,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:16:26,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:26,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:16:26,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:16:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:16:26,966 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:16:26,967 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:16:26,969 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:16:26,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:16:26,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:16:26,981 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-07-22 04:16:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:16:36,617 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-07-22 04:16:36,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 04:16:36,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-07-22 04:16:36,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:16:36,649 INFO L225 Difference]: With dead ends: 2097 [2018-07-22 04:16:36,649 INFO L226 Difference]: Without dead ends: 1499 [2018-07-22 04:16:36,657 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:16:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-07-22 04:16:36,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-07-22 04:16:36,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-07-22 04:16:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-07-22 04:16:36,801 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 21 [2018-07-22 04:16:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:16:36,802 INFO L471 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-07-22 04:16:36,802 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:16:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-07-22 04:16:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-22 04:16:36,808 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:16:36,808 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:16:36,809 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:16:36,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1906054359, now seen corresponding path program 1 times [2018-07-22 04:16:36,809 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:16:36,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:16:36,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:36,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:16:36,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:16:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:16:37,039 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:16:37,039 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:16:37,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:16:37,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:16:37,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:16:37,087 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-07-22 04:16:42,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:16:42,580 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-07-22 04:16:42,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:16:42,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2018-07-22 04:16:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:16:42,597 INFO L225 Difference]: With dead ends: 4257 [2018-07-22 04:16:42,597 INFO L226 Difference]: Without dead ends: 2774 [2018-07-22 04:16:42,600 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:16:42,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-07-22 04:16:42,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-07-22 04:16:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-07-22 04:16:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-07-22 04:16:42,680 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 89 [2018-07-22 04:16:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:16:42,680 INFO L471 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-07-22 04:16:42,680 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:16:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-07-22 04:16:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-22 04:16:42,684 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:16:42,684 INFO L358 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:16:42,684 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:16:42,684 INFO L82 PathProgramCache]: Analyzing trace with hash -973213194, now seen corresponding path program 1 times [2018-07-22 04:16:42,685 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:16:42,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:16:42,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:42,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:16:42,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:16:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:16:43,067 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:16:43,067 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 04:16:43,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:16:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:16:43,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:16:43,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:16:43,629 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 04:16:43,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-22 04:16:43,630 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 04:16:43,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 04:16:43,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-22 04:16:43,631 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 7 states. [2018-07-22 04:16:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:16:56,198 INFO L93 Difference]: Finished difference Result 10381 states and 14533 transitions. [2018-07-22 04:16:56,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 04:16:56,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2018-07-22 04:16:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:16:56,227 INFO L225 Difference]: With dead ends: 10381 [2018-07-22 04:16:56,227 INFO L226 Difference]: Without dead ends: 6269 [2018-07-22 04:16:56,233 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-22 04:16:56,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2018-07-22 04:16:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 5353. [2018-07-22 04:16:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5353 states. [2018-07-22 04:16:56,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5353 states to 5353 states and 6713 transitions. [2018-07-22 04:16:56,573 INFO L78 Accepts]: Start accepts. Automaton has 5353 states and 6713 transitions. Word has length 92 [2018-07-22 04:16:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:16:56,575 INFO L471 AbstractCegarLoop]: Abstraction has 5353 states and 6713 transitions. [2018-07-22 04:16:56,575 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 04:16:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5353 states and 6713 transitions. [2018-07-22 04:16:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-22 04:16:56,587 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:16:56,588 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:16:56,588 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:16:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash -207119646, now seen corresponding path program 1 times [2018-07-22 04:16:56,588 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:16:56,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:16:56,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:56,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:16:56,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:16:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:16:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-22 04:16:56,976 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:16:56,977 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:16:56,977 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:16:56,977 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:16:56,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:16:56,978 INFO L87 Difference]: Start difference. First operand 5353 states and 6713 transitions. Second operand 3 states. [2018-07-22 04:17:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:17:00,419 INFO L93 Difference]: Finished difference Result 15386 states and 19404 transitions. [2018-07-22 04:17:00,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:17:00,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2018-07-22 04:17:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:17:00,459 INFO L225 Difference]: With dead ends: 15386 [2018-07-22 04:17:00,459 INFO L226 Difference]: Without dead ends: 10035 [2018-07-22 04:17:00,468 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:17:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10035 states. [2018-07-22 04:17:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10035 to 10035. [2018-07-22 04:17:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10035 states. [2018-07-22 04:17:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10035 states to 10035 states and 12365 transitions. [2018-07-22 04:17:00,897 INFO L78 Accepts]: Start accepts. Automaton has 10035 states and 12365 transitions. Word has length 177 [2018-07-22 04:17:00,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:17:00,899 INFO L471 AbstractCegarLoop]: Abstraction has 10035 states and 12365 transitions. [2018-07-22 04:17:00,899 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:17:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 10035 states and 12365 transitions. [2018-07-22 04:17:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-07-22 04:17:00,906 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:17:00,906 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 04:17:00,906 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:17:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1248135355, now seen corresponding path program 1 times [2018-07-22 04:17:00,907 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:17:00,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:17:00,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:00,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:17:00,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:17:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:17:01,219 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:17:01,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 04:17:01,219 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:17:01,219 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:17:01,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:17:01,220 INFO L87 Difference]: Start difference. First operand 10035 states and 12365 transitions. Second operand 4 states. [2018-07-22 04:17:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:17:07,067 INFO L93 Difference]: Finished difference Result 25173 states and 32095 transitions. [2018-07-22 04:17:07,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 04:17:07,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 194 [2018-07-22 04:17:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:17:07,110 INFO L225 Difference]: With dead ends: 25173 [2018-07-22 04:17:07,110 INFO L226 Difference]: Without dead ends: 15575 [2018-07-22 04:17:07,120 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:17:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15575 states. [2018-07-22 04:17:07,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15575 to 15575. [2018-07-22 04:17:07,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15575 states. [2018-07-22 04:17:07,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15575 states to 15575 states and 18926 transitions. [2018-07-22 04:17:07,415 INFO L78 Accepts]: Start accepts. Automaton has 15575 states and 18926 transitions. Word has length 194 [2018-07-22 04:17:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:17:07,416 INFO L471 AbstractCegarLoop]: Abstraction has 15575 states and 18926 transitions. [2018-07-22 04:17:07,416 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:17:07,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15575 states and 18926 transitions. [2018-07-22 04:17:07,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-22 04:17:07,423 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:17:07,426 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:17:07,426 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:17:07,426 INFO L82 PathProgramCache]: Analyzing trace with hash 786840447, now seen corresponding path program 1 times [2018-07-22 04:17:07,426 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:17:07,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:17:07,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:07,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:17:07,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:17:08,145 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-07-22 04:17:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 182 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-22 04:17:08,334 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:17:08,334 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 04:17:08,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:17:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:17:08,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:17:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 182 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-22 04:17:09,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:17:09,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-07-22 04:17:09,092 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 04:17:09,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 04:17:09,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-22 04:17:09,093 INFO L87 Difference]: Start difference. First operand 15575 states and 18926 transitions. Second operand 9 states. [2018-07-22 04:17:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:17:18,982 INFO L93 Difference]: Finished difference Result 35110 states and 42380 transitions. [2018-07-22 04:17:18,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-22 04:17:18,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 284 [2018-07-22 04:17:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:17:19,013 INFO L225 Difference]: With dead ends: 35110 [2018-07-22 04:17:19,013 INFO L226 Difference]: Without dead ends: 18673 [2018-07-22 04:17:19,029 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-07-22 04:17:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18673 states. [2018-07-22 04:17:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18673 to 18125. [2018-07-22 04:17:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18125 states. [2018-07-22 04:17:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18125 states to 18125 states and 21557 transitions. [2018-07-22 04:17:19,330 INFO L78 Accepts]: Start accepts. Automaton has 18125 states and 21557 transitions. Word has length 284 [2018-07-22 04:17:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:17:19,331 INFO L471 AbstractCegarLoop]: Abstraction has 18125 states and 21557 transitions. [2018-07-22 04:17:19,332 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 04:17:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 18125 states and 21557 transitions. [2018-07-22 04:17:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-07-22 04:17:19,339 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:17:19,340 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:17:19,340 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:17:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2079399749, now seen corresponding path program 1 times [2018-07-22 04:17:19,340 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:17:19,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:17:19,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:19,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:17:19,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:17:19,835 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-22 04:17:20,254 WARN L169 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-07-22 04:17:20,603 WARN L169 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 9 [2018-07-22 04:17:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 237 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-22 04:17:21,017 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:17:21,017 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-07-22 04:17:21,031 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 [2018-07-22 04:17:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:17:21,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:17:21,726 WARN L169 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 19 [2018-07-22 04:17:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 237 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-22 04:17:22,452 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:17:22,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2018-07-22 04:17:22,453 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 04:17:22,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 04:17:22,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-22 04:17:22,454 INFO L87 Difference]: Start difference. First operand 18125 states and 21557 transitions. Second operand 8 states. [2018-07-22 04:17:32,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:17:32,456 INFO L93 Difference]: Finished difference Result 37531 states and 44639 transitions. [2018-07-22 04:17:32,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 04:17:32,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 371 [2018-07-22 04:17:32,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:17:32,493 INFO L225 Difference]: With dead ends: 37531 [2018-07-22 04:17:32,493 INFO L226 Difference]: Without dead ends: 20260 [2018-07-22 04:17:32,512 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-22 04:17:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20260 states. [2018-07-22 04:17:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20260 to 20256. [2018-07-22 04:17:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20256 states. [2018-07-22 04:17:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20256 states to 20256 states and 23888 transitions. [2018-07-22 04:17:33,045 INFO L78 Accepts]: Start accepts. Automaton has 20256 states and 23888 transitions. Word has length 371 [2018-07-22 04:17:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:17:33,046 INFO L471 AbstractCegarLoop]: Abstraction has 20256 states and 23888 transitions. [2018-07-22 04:17:33,046 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-22 04:17:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 20256 states and 23888 transitions. [2018-07-22 04:17:33,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-07-22 04:17:33,059 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:17:33,059 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-07-22 04:17:33,060 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:17:33,060 INFO L82 PathProgramCache]: Analyzing trace with hash -550688752, now seen corresponding path program 1 times [2018-07-22 04:17:33,060 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:17:33,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:17:33,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:33,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:17:33,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:17:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:17:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 172 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:17:34,530 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:17:34,530 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 04:17:34,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:17:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:17:34,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:18:05,137 WARN L169 SmtUtils]: Spent 27.71 s on a formula simplification. DAG size of input: 224 DAG size of output: 118 [2018-07-22 04:18:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2018-07-22 04:18:07,084 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 04:18:07,084 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-07-22 04:18:07,085 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-22 04:18:07,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-22 04:18:07,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2018-07-22 04:18:07,085 INFO L87 Difference]: Start difference. First operand 20256 states and 23888 transitions. Second operand 10 states. [2018-07-22 04:19:14,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:19:14,169 INFO L93 Difference]: Finished difference Result 103439 states and 120584 transitions. [2018-07-22 04:19:14,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-22 04:19:14,170 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 466 [2018-07-22 04:19:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:19:14,247 INFO L225 Difference]: With dead ends: 103439 [2018-07-22 04:19:14,247 INFO L226 Difference]: Without dead ends: 71183 [2018-07-22 04:19:14,272 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 449 SyntacticMatches, 18 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=32, Invalid=99, Unknown=1, NotChecked=0, Total=132 [2018-07-22 04:19:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71183 states. [2018-07-22 04:19:14,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71183 to 55696. [2018-07-22 04:19:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55696 states. [2018-07-22 04:19:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55696 states to 55696 states and 62836 transitions. [2018-07-22 04:19:15,067 INFO L78 Accepts]: Start accepts. Automaton has 55696 states and 62836 transitions. Word has length 466 [2018-07-22 04:19:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:19:15,069 INFO L471 AbstractCegarLoop]: Abstraction has 55696 states and 62836 transitions. [2018-07-22 04:19:15,069 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-22 04:19:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 55696 states and 62836 transitions. [2018-07-22 04:19:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-07-22 04:19:15,086 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:19:15,086 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:19:15,086 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:19:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1341249019, now seen corresponding path program 1 times [2018-07-22 04:19:15,087 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:19:15,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:19:15,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:19:15,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:19:15,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:19:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:19:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2018-07-22 04:19:15,730 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:19:15,730 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 04:19:15,730 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:19:15,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:19:15,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:19:15,731 INFO L87 Difference]: Start difference. First operand 55696 states and 62836 transitions. Second operand 4 states. [2018-07-22 04:19:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:19:24,543 INFO L93 Difference]: Finished difference Result 133157 states and 149587 transitions. [2018-07-22 04:19:24,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 04:19:24,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 484 [2018-07-22 04:19:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:19:24,660 INFO L225 Difference]: With dead ends: 133157 [2018-07-22 04:19:24,661 INFO L226 Difference]: Without dead ends: 78739 [2018-07-22 04:19:24,696 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:19:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78739 states. [2018-07-22 04:19:25,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78739 to 76596. [2018-07-22 04:19:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76596 states. [2018-07-22 04:19:25,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76596 states to 76596 states and 84700 transitions. [2018-07-22 04:19:25,955 INFO L78 Accepts]: Start accepts. Automaton has 76596 states and 84700 transitions. Word has length 484 [2018-07-22 04:19:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:19:25,955 INFO L471 AbstractCegarLoop]: Abstraction has 76596 states and 84700 transitions. [2018-07-22 04:19:25,955 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:19:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 76596 states and 84700 transitions. [2018-07-22 04:19:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2018-07-22 04:19:25,978 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:19:25,979 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:19:25,979 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:19:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1594360814, now seen corresponding path program 1 times [2018-07-22 04:19:25,980 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:19:25,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:19:25,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:19:25,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:19:25,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:19:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:19:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-07-22 04:19:26,574 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:19:26,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-22 04:19:26,576 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:19:26,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:19:26,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:19:26,577 INFO L87 Difference]: Start difference. First operand 76596 states and 84700 transitions. Second operand 3 states. [2018-07-22 04:19:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:19:30,398 INFO L93 Difference]: Finished difference Result 150190 states and 166168 transitions. [2018-07-22 04:19:30,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:19:30,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 519 [2018-07-22 04:19:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:19:30,489 INFO L225 Difference]: With dead ends: 150190 [2018-07-22 04:19:30,489 INFO L226 Difference]: Without dead ends: 74874 [2018-07-22 04:19:30,534 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:19:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74874 states. [2018-07-22 04:19:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74874 to 74861. [2018-07-22 04:19:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74861 states. [2018-07-22 04:19:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74861 states to 74861 states and 82712 transitions. [2018-07-22 04:19:33,927 INFO L78 Accepts]: Start accepts. Automaton has 74861 states and 82712 transitions. Word has length 519 [2018-07-22 04:19:33,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:19:33,928 INFO L471 AbstractCegarLoop]: Abstraction has 74861 states and 82712 transitions. [2018-07-22 04:19:33,928 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:19:33,928 INFO L276 IsEmpty]: Start isEmpty. Operand 74861 states and 82712 transitions. [2018-07-22 04:19:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-07-22 04:19:33,939 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:19:33,939 INFO L358 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 04:19:33,939 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:19:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1710907184, now seen corresponding path program 1 times [2018-07-22 04:19:33,940 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:19:33,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:19:33,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:19:33,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:19:33,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:19:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:19:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 75 proven. 448 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-22 04:19:35,413 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:19:35,413 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 04:19:35,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:19:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:19:35,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:19:40,747 WARN L169 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 1806 DAG size of output: 148 [2018-07-22 04:19:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 407 proven. 117 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-22 04:19:44,790 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:19:44,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-07-22 04:19:44,791 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 04:19:44,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 04:19:44,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-22 04:19:44,791 INFO L87 Difference]: Start difference. First operand 74861 states and 82712 transitions. Second operand 8 states. Received shutdown request... [2018-07-22 04:20:06,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-22 04:20:06,592 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 04:20:06,655 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 04:20:06,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 04:20:06 BoogieIcfgContainer [2018-07-22 04:20:06,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 04:20:06,657 INFO L168 Benchmark]: Toolchain (without parser) took 233692.95 ms. Allocated memory was 302.0 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 240.0 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 826.9 MB. Max. memory is 5.3 GB. [2018-07-22 04:20:06,657 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 04:20:06,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2254.27 ms. Allocated memory was 302.0 MB in the beginning and 334.0 MB in the end (delta: 32.0 MB). Free memory was 238.0 MB in the beginning and 167.3 MB in the end (delta: 70.6 MB). Peak memory consumption was 102.6 MB. Max. memory is 5.3 GB. [2018-07-22 04:20:06,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 392.26 ms. Allocated memory was 334.0 MB in the beginning and 395.3 MB in the end (delta: 61.3 MB). Free memory was 167.3 MB in the beginning and 262.6 MB in the end (delta: -95.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 5.3 GB. [2018-07-22 04:20:06,660 INFO L168 Benchmark]: Boogie Preprocessor took 1025.85 ms. Allocated memory was 395.3 MB in the beginning and 576.2 MB in the end (delta: 180.9 MB). Free memory was 262.6 MB in the beginning and 466.5 MB in the end (delta: -203.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 5.3 GB. [2018-07-22 04:20:06,661 INFO L168 Benchmark]: RCFGBuilder took 9737.79 ms. Allocated memory was 576.2 MB in the beginning and 693.6 MB in the end (delta: 117.4 MB). Free memory was 466.5 MB in the beginning and 448.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 202.7 MB. Max. memory is 5.3 GB. [2018-07-22 04:20:06,661 INFO L168 Benchmark]: TraceAbstraction took 220273.27 ms. Allocated memory was 693.6 MB in the beginning and 2.4 GB in the end (delta: 1.7 GB). Free memory was 448.3 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 643.6 MB. Max. memory is 5.3 GB. [2018-07-22 04:20:06,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2254.27 ms. Allocated memory was 302.0 MB in the beginning and 334.0 MB in the end (delta: 32.0 MB). Free memory was 238.0 MB in the beginning and 167.3 MB in the end (delta: 70.6 MB). Peak memory consumption was 102.6 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 392.26 ms. Allocated memory was 334.0 MB in the beginning and 395.3 MB in the end (delta: 61.3 MB). Free memory was 167.3 MB in the beginning and 262.6 MB in the end (delta: -95.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1025.85 ms. Allocated memory was 395.3 MB in the beginning and 576.2 MB in the end (delta: 180.9 MB). Free memory was 262.6 MB in the beginning and 466.5 MB in the end (delta: -203.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 9737.79 ms. Allocated memory was 576.2 MB in the beginning and 693.6 MB in the end (delta: 117.4 MB). Free memory was 466.5 MB in the beginning and 448.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 202.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 220273.27 ms. Allocated memory was 693.6 MB in the beginning and 2.4 GB in the end (delta: 1.7 GB). Free memory was 448.3 MB in the beginning and 1.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 643.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 68). Cancelled while BasicCegarLoop was constructing difference of abstraction (74861states) and interpolant automaton (currently 9 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (175254 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 220.1s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 159.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3961 SDtfs, 17980 SDslu, 4353 SDs, 0 SdLazy, 67979 SolverSat, 6753 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 144.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1794 GetRequests, 1725 SyntacticMatches, 21 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 41.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76596occurred 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: 7.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 19125 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 49.8s InterpolantComputationTime, 4964 NumberOfCodeBlocks, 4964 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4948 ConstructedInterpolants, 305 QuantifiedInterpolants, 34396321 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2336 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 4793/6434 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label04_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_04-20-06-700.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label04_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_04-20-06-700.csv Completed graceful shutdown