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_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 04:25:37,782 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 04:25:37,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 04:25:37,797 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 04:25:37,798 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 04:25:37,799 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 04:25:37,800 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 04:25:37,803 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 04:25:37,805 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 04:25:37,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 04:25:37,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 04:25:37,808 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 04:25:37,809 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 04:25:37,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 04:25:37,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 04:25:37,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 04:25:37,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 04:25:37,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 04:25:37,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 04:25:37,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 04:25:37,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 04:25:37,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 04:25:37,833 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 04:25:37,841 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 04:25:37,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 04:25:37,868 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 04:25:37,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 04:25:37,869 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 04:25:37,869 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 04:25:37,869 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 04:25:37,870 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 04:25:37,870 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 04:25:37,870 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 04:25:37,870 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 04:25:37,870 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 04:25:37,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 04:25:37,874 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 04:25:37,874 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 04:25:37,874 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 04:25:37,874 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 04:25:37,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 04:25:37,875 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 04:25:37,875 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 04:25:37,875 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 04:25:37,875 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 04:25:37,875 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 04:25:37,876 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 04:25:37,876 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 04:25:37,876 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 04:25:37,876 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 04:25:37,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 04:25:37,876 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 04:25:37,878 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 04:25:37,928 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 04:25:37,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 04:25:37,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 04:25:37,950 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 04:25:37,950 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 04:25:37,951 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25_false-unreach-call.c [2018-07-22 04:25:38,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/e41933bcd/5060424ef09f47b89a17f00d41ac5710/FLAGeb6f4cbbe [2018-07-22 04:25:38,912 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 04:25:38,913 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label25_false-unreach-call.c [2018-07-22 04:25:38,948 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/e41933bcd/5060424ef09f47b89a17f00d41ac5710/FLAGeb6f4cbbe [2018-07-22 04:25:39,053 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/e41933bcd/5060424ef09f47b89a17f00d41ac5710 [2018-07-22 04:25:39,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 04:25:39,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 04:25:39,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 04:25:39,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 04:25:39,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 04:25:39,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:25:39" (1/1) ... [2018-07-22 04:25:39,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5916e1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:39, skipping insertion in model container [2018-07-22 04:25:39,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:25:39" (1/1) ... [2018-07-22 04:25:39,365 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 04:25:40,264 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 04:25:40,283 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 04:25:40,790 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 04:25:41,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41 WrapperNode [2018-07-22 04:25:41,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 04:25:41,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 04:25:41,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 04:25:41,019 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 04:25:41,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:41,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:41,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 04:25:41,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 04:25:41,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 04:25:41,499 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 04:25:41,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:41,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:41,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:41,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:41,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:42,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:42,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (1/1) ... [2018-07-22 04:25:42,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 04:25:42,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 04:25:42,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 04:25:42,713 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 04:25:42,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (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 04:25:42,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 04:25:42,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 04:25:42,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 04:25:53,474 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 04:25:53,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:25:53 BoogieIcfgContainer [2018-07-22 04:25:53,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 04:25:53,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 04:25:53,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 04:25:53,479 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 04:25:53,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:25:39" (1/3) ... [2018-07-22 04:25:53,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c26d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:25:53, skipping insertion in model container [2018-07-22 04:25:53,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:25:41" (2/3) ... [2018-07-22 04:25:53,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c26d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:25:53, skipping insertion in model container [2018-07-22 04:25:53,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:25:53" (3/3) ... [2018-07-22 04:25:53,485 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label25_false-unreach-call.c [2018-07-22 04:25:53,497 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 04:25:53,512 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 04:25:53,573 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 04:25:53,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 04:25:53,574 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 04:25:53,574 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 04:25:53,574 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 04:25:53,574 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 04:25:53,574 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 04:25:53,574 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 04:25:53,574 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 04:25:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-07-22 04:25:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-22 04:25:53,615 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:25:53,616 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, 1, 1, 1] [2018-07-22 04:25:53,616 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:25:53,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1155896462, now seen corresponding path program 1 times [2018-07-22 04:25:53,621 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:25:53,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:25:53,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:25:53,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:25:53,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:25:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:25:54,046 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 04:25:54,049 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:25:54,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:25:54,060 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:25:54,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:25:54,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:25:54,078 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-07-22 04:26:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:26:00,474 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-07-22 04:26:00,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 04:26:00,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-07-22 04:26:00,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:26:00,503 INFO L225 Difference]: With dead ends: 2085 [2018-07-22 04:26:00,503 INFO L226 Difference]: Without dead ends: 1487 [2018-07-22 04:26:00,512 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 04:26:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-07-22 04:26:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-07-22 04:26:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-07-22 04:26:00,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-07-22 04:26:00,623 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 24 [2018-07-22 04:26:00,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:26:00,624 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-07-22 04:26:00,624 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:26:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-07-22 04:26:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-22 04:26:00,627 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:26:00,629 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 04:26:00,629 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:26:00,629 INFO L82 PathProgramCache]: Analyzing trace with hash -245382934, now seen corresponding path program 1 times [2018-07-22 04:26:00,630 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:26:00,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:26:00,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:00,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:00,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:26:00,877 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:26:00,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:26:00,879 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:26:00,879 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:26:00,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:26:00,882 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-07-22 04:26:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:26:07,369 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-07-22 04:26:07,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:26:07,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2018-07-22 04:26:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:26:07,378 INFO L225 Difference]: With dead ends: 2908 [2018-07-22 04:26:07,378 INFO L226 Difference]: Without dead ends: 1887 [2018-07-22 04:26:07,381 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 04:26:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-07-22 04:26:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-07-22 04:26:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-07-22 04:26:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-07-22 04:26:07,451 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 92 [2018-07-22 04:26:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:26:07,451 INFO L471 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-07-22 04:26:07,451 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:26:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-07-22 04:26:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-22 04:26:07,454 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:26:07,457 INFO L358 BasicCegarLoop]: trace histogram [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] [2018-07-22 04:26:07,458 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:26:07,458 INFO L82 PathProgramCache]: Analyzing trace with hash -85382945, now seen corresponding path program 1 times [2018-07-22 04:26:07,458 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:26:07,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:26:07,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:07,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:07,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:26:08,014 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:26:08,014 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 04:26:08,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:08,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:26:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:26:08,316 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 04:26:08,321 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-07-22 04:26:08,322 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 04:26:08,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 04:26:08,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:26:08,323 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 6 states. [2018-07-22 04:26:26,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:26:26,478 INFO L93 Difference]: Finished difference Result 9395 states and 12726 transitions. [2018-07-22 04:26:26,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 04:26:26,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-07-22 04:26:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:26:26,502 INFO L225 Difference]: With dead ends: 9395 [2018-07-22 04:26:26,503 INFO L226 Difference]: Without dead ends: 5766 [2018-07-22 04:26:26,509 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:26:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2018-07-22 04:26:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 4901. [2018-07-22 04:26:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4901 states. [2018-07-22 04:26:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4901 states to 4901 states and 5986 transitions. [2018-07-22 04:26:26,651 INFO L78 Accepts]: Start accepts. Automaton has 4901 states and 5986 transitions. Word has length 95 [2018-07-22 04:26:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:26:26,652 INFO L471 AbstractCegarLoop]: Abstraction has 4901 states and 5986 transitions. [2018-07-22 04:26:26,653 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 04:26:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4901 states and 5986 transitions. [2018-07-22 04:26:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-22 04:26:26,662 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:26:26,662 INFO L358 BasicCegarLoop]: trace histogram [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, 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] [2018-07-22 04:26:26,662 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:26:26,663 INFO L82 PathProgramCache]: Analyzing trace with hash -158335457, now seen corresponding path program 1 times [2018-07-22 04:26:26,663 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:26:26,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:26:26,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:26,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:26,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:26:27,231 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:26:27,231 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 04:26:27,231 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 04:26:27,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 04:26:27,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-22 04:26:27,232 INFO L87 Difference]: Start difference. First operand 4901 states and 5986 transitions. Second operand 5 states. [2018-07-22 04:26:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:26:33,129 INFO L93 Difference]: Finished difference Result 13599 states and 16696 transitions. [2018-07-22 04:26:33,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 04:26:33,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2018-07-22 04:26:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:26:33,155 INFO L225 Difference]: With dead ends: 13599 [2018-07-22 04:26:33,155 INFO L226 Difference]: Without dead ends: 9127 [2018-07-22 04:26:33,162 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:26:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9127 states. [2018-07-22 04:26:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9127 to 7036. [2018-07-22 04:26:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7036 states. [2018-07-22 04:26:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 8407 transitions. [2018-07-22 04:26:33,340 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 8407 transitions. Word has length 174 [2018-07-22 04:26:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:26:33,341 INFO L471 AbstractCegarLoop]: Abstraction has 7036 states and 8407 transitions. [2018-07-22 04:26:33,341 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 04:26:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 8407 transitions. [2018-07-22 04:26:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-22 04:26:33,348 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:26:33,348 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2018-07-22 04:26:33,349 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:26:33,349 INFO L82 PathProgramCache]: Analyzing trace with hash 852459017, now seen corresponding path program 1 times [2018-07-22 04:26:33,349 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:26:33,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:26:33,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:33,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:33,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-07-22 04:26:33,785 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:26:33,785 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:26:33,785 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:26:33,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:26:33,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:26:33,786 INFO L87 Difference]: Start difference. First operand 7036 states and 8407 transitions. Second operand 3 states. [2018-07-22 04:26:38,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:26:38,782 INFO L93 Difference]: Finished difference Result 17482 states and 21295 transitions. [2018-07-22 04:26:38,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:26:38,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 279 [2018-07-22 04:26:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:26:38,814 INFO L225 Difference]: With dead ends: 17482 [2018-07-22 04:26:38,814 INFO L226 Difference]: Without dead ends: 10875 [2018-07-22 04:26:38,822 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 04:26:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10875 states. [2018-07-22 04:26:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10875 to 10872. [2018-07-22 04:26:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10872 states. [2018-07-22 04:26:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10872 states to 10872 states and 12821 transitions. [2018-07-22 04:26:39,030 INFO L78 Accepts]: Start accepts. Automaton has 10872 states and 12821 transitions. Word has length 279 [2018-07-22 04:26:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:26:39,031 INFO L471 AbstractCegarLoop]: Abstraction has 10872 states and 12821 transitions. [2018-07-22 04:26:39,031 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:26:39,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10872 states and 12821 transitions. [2018-07-22 04:26:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-22 04:26:39,038 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:26:39,039 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2018-07-22 04:26:39,039 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:26:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash -813489229, now seen corresponding path program 1 times [2018-07-22 04:26:39,039 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:26:39,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:26:39,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:39,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:39,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 225 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-22 04:26:39,755 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:26:39,755 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 04:26:39,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:39,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:26:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 225 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-22 04:26:40,056 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:26:40,056 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-07-22 04:26:40,057 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 04:26:40,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 04:26:40,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-22 04:26:40,058 INFO L87 Difference]: Start difference. First operand 10872 states and 12821 transitions. Second operand 7 states. [2018-07-22 04:26:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:26:51,628 INFO L93 Difference]: Finished difference Result 36301 states and 43032 transitions. [2018-07-22 04:26:51,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 04:26:51,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2018-07-22 04:26:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:26:51,696 INFO L225 Difference]: With dead ends: 36301 [2018-07-22 04:26:51,696 INFO L226 Difference]: Without dead ends: 19383 [2018-07-22 04:26:51,710 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-22 04:26:51,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19383 states. [2018-07-22 04:26:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19383 to 17660. [2018-07-22 04:26:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17660 states. [2018-07-22 04:26:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17660 states to 17660 states and 20155 transitions. [2018-07-22 04:26:51,991 INFO L78 Accepts]: Start accepts. Automaton has 17660 states and 20155 transitions. Word has length 332 [2018-07-22 04:26:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:26:51,992 INFO L471 AbstractCegarLoop]: Abstraction has 17660 states and 20155 transitions. [2018-07-22 04:26:51,992 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 04:26:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 17660 states and 20155 transitions. [2018-07-22 04:26:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-22 04:26:51,998 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:26:51,999 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2018-07-22 04:26:51,999 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:26:51,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1236016666, now seen corresponding path program 1 times [2018-07-22 04:26:51,999 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:26:51,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:26:52,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:52,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:26:52,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:26:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:26:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-07-22 04:26:52,348 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:26:52,348 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 04:26:52,349 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 04:26:52,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 04:26:52,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 04:26:52,349 INFO L87 Difference]: Start difference. First operand 17660 states and 20155 transitions. Second operand 4 states. [2018-07-22 04:27:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:27:00,335 INFO L93 Difference]: Finished difference Result 51126 states and 58333 transitions. [2018-07-22 04:27:00,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 04:27:00,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-07-22 04:27:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:27:00,381 INFO L225 Difference]: With dead ends: 51126 [2018-07-22 04:27:00,381 INFO L226 Difference]: Without dead ends: 33034 [2018-07-22 04:27:00,405 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 04:27:00,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33034 states. [2018-07-22 04:27:00,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33034 to 26607. [2018-07-22 04:27:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26607 states. [2018-07-22 04:27:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26607 states to 26607 states and 29631 transitions. [2018-07-22 04:27:00,816 INFO L78 Accepts]: Start accepts. Automaton has 26607 states and 29631 transitions. Word has length 339 [2018-07-22 04:27:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:27:00,817 INFO L471 AbstractCegarLoop]: Abstraction has 26607 states and 29631 transitions. [2018-07-22 04:27:00,817 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 04:27:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26607 states and 29631 transitions. [2018-07-22 04:27:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-22 04:27:00,828 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:27:00,829 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2018-07-22 04:27:00,829 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:27:00,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1442617208, now seen corresponding path program 1 times [2018-07-22 04:27:00,829 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:27:00,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:27:00,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:00,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:27:00,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:27:01,724 WARN L169 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-07-22 04:27:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 232 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-22 04:27:01,979 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:27:01,979 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 04:27:01,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:27:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:27:02,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:27:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 232 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-22 04:27:02,476 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:27:02,477 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-07-22 04:27:02,477 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 04:27:02,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 04:27:02,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-22 04:27:02,478 INFO L87 Difference]: Start difference. First operand 26607 states and 29631 transitions. Second operand 9 states. [2018-07-22 04:27:08,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:27:08,165 INFO L93 Difference]: Finished difference Result 55531 states and 61680 transitions. [2018-07-22 04:27:08,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-22 04:27:08,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 409 [2018-07-22 04:27:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:27:08,199 INFO L225 Difference]: With dead ends: 55531 [2018-07-22 04:27:08,199 INFO L226 Difference]: Without dead ends: 29352 [2018-07-22 04:27:08,224 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 407 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 04:27:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29352 states. [2018-07-22 04:27:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29352 to 29163. [2018-07-22 04:27:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29163 states. [2018-07-22 04:27:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29163 states to 29163 states and 32263 transitions. [2018-07-22 04:27:08,592 INFO L78 Accepts]: Start accepts. Automaton has 29163 states and 32263 transitions. Word has length 409 [2018-07-22 04:27:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:27:08,593 INFO L471 AbstractCegarLoop]: Abstraction has 29163 states and 32263 transitions. [2018-07-22 04:27:08,593 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 04:27:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 29163 states and 32263 transitions. [2018-07-22 04:27:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-22 04:27:08,606 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:27:08,606 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:08,606 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:27:08,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1894626961, now seen corresponding path program 1 times [2018-07-22 04:27:08,607 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:27:08,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:27:08,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:08,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:27:08,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:27:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-07-22 04:27:09,214 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:27:09,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:27:09,215 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:27:09,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:27:09,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:27:09,216 INFO L87 Difference]: Start difference. First operand 29163 states and 32263 transitions. Second operand 3 states. [2018-07-22 04:27:13,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:27:13,136 INFO L93 Difference]: Finished difference Result 65145 states and 72322 transitions. [2018-07-22 04:27:13,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:27:13,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 431 [2018-07-22 04:27:13,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:27:13,188 INFO L225 Difference]: With dead ends: 65145 [2018-07-22 04:27:13,188 INFO L226 Difference]: Without dead ends: 36400 [2018-07-22 04:27:13,212 INFO L578 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 [2018-07-22 04:27:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36400 states. [2018-07-22 04:27:13,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36400 to 35544. [2018-07-22 04:27:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35544 states. [2018-07-22 04:27:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35544 states to 35544 states and 38996 transitions. [2018-07-22 04:27:13,815 INFO L78 Accepts]: Start accepts. Automaton has 35544 states and 38996 transitions. Word has length 431 [2018-07-22 04:27:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:27:13,816 INFO L471 AbstractCegarLoop]: Abstraction has 35544 states and 38996 transitions. [2018-07-22 04:27:13,817 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:27:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 35544 states and 38996 transitions. [2018-07-22 04:27:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-07-22 04:27:13,827 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:27:13,827 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:13,827 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:27:13,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1136484958, now seen corresponding path program 1 times [2018-07-22 04:27:13,828 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:27:13,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:27:13,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:13,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:27:13,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:27:14,229 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-22 04:27:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-07-22 04:27:14,345 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:27:14,346 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:27:14,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:27:14,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:27:14,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:27:14,347 INFO L87 Difference]: Start difference. First operand 35544 states and 38996 transitions. Second operand 3 states. [2018-07-22 04:27:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:27:20,378 INFO L93 Difference]: Finished difference Result 83030 states and 91024 transitions. [2018-07-22 04:27:20,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:27:20,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 470 [2018-07-22 04:27:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:27:20,435 INFO L225 Difference]: With dead ends: 83030 [2018-07-22 04:27:20,435 INFO L226 Difference]: Without dead ends: 48340 [2018-07-22 04:27:20,453 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 04:27:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48340 states. [2018-07-22 04:27:20,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48340 to 46195. [2018-07-22 04:27:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46195 states. [2018-07-22 04:27:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46195 states to 46195 states and 50390 transitions. [2018-07-22 04:27:20,949 INFO L78 Accepts]: Start accepts. Automaton has 46195 states and 50390 transitions. Word has length 470 [2018-07-22 04:27:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:27:20,949 INFO L471 AbstractCegarLoop]: Abstraction has 46195 states and 50390 transitions. [2018-07-22 04:27:20,949 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:27:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 46195 states and 50390 transitions. [2018-07-22 04:27:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-07-22 04:27:20,970 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:27:20,971 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 04:27:20,971 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:27:20,971 INFO L82 PathProgramCache]: Analyzing trace with hash 372168357, now seen corresponding path program 1 times [2018-07-22 04:27:20,971 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:27:20,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:27:20,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:20,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:27:20,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:27:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:27:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 389 proven. 248 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-22 04:27:22,221 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:27:22,221 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 04:27:22,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:27:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:27:22,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:27:22,736 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2018-07-22 04:27:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 389 proven. 248 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-22 04:27:24,975 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:27:24,976 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-07-22 04:27:24,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 04:27:24,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 04:27:24,977 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-22 04:27:24,977 INFO L87 Difference]: Start difference. First operand 46195 states and 50390 transitions. Second operand 9 states. [2018-07-22 04:28:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:28:03,129 INFO L93 Difference]: Finished difference Result 122727 states and 133690 transitions. [2018-07-22 04:28:03,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-22 04:28:03,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 544 [2018-07-22 04:28:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:28:03,191 INFO L225 Difference]: With dead ends: 122727 [2018-07-22 04:28:03,191 INFO L226 Difference]: Without dead ends: 75251 [2018-07-22 04:28:03,217 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-22 04:28:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75251 states. [2018-07-22 04:28:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75251 to 59404. [2018-07-22 04:28:03,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59404 states. [2018-07-22 04:28:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59404 states to 59404 states and 64062 transitions. [2018-07-22 04:28:04,015 INFO L78 Accepts]: Start accepts. Automaton has 59404 states and 64062 transitions. Word has length 544 [2018-07-22 04:28:04,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:28:04,015 INFO L471 AbstractCegarLoop]: Abstraction has 59404 states and 64062 transitions. [2018-07-22 04:28:04,015 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-22 04:28:04,015 INFO L276 IsEmpty]: Start isEmpty. Operand 59404 states and 64062 transitions. [2018-07-22 04:28:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-07-22 04:28:04,030 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:28:04,031 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 04:28:04,031 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:28:04,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2023812, now seen corresponding path program 1 times [2018-07-22 04:28:04,031 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:28:04,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:28:04,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:04,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:28:04,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:28:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 334 proven. 336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:28:05,418 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:28:05,418 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 04:28:05,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:28:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:28:05,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:28:05,984 WARN L169 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-22 04:28:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 418 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 04:28:07,443 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:28:07,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2018-07-22 04:28:07,445 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-22 04:28:07,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-22 04:28:07,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-07-22 04:28:07,445 INFO L87 Difference]: Start difference. First operand 59404 states and 64062 transitions. Second operand 14 states. [2018-07-22 04:28:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:28:26,859 INFO L93 Difference]: Finished difference Result 141154 states and 151531 transitions. [2018-07-22 04:28:26,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-22 04:28:26,859 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 557 [2018-07-22 04:28:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:28:26,928 INFO L225 Difference]: With dead ends: 141154 [2018-07-22 04:28:26,928 INFO L226 Difference]: Without dead ends: 82175 [2018-07-22 04:28:26,955 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 584 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=578, Invalid=1314, Unknown=0, NotChecked=0, Total=1892 [2018-07-22 04:28:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82175 states. [2018-07-22 04:28:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82175 to 56811. [2018-07-22 04:28:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56811 states. [2018-07-22 04:28:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56811 states to 56811 states and 61047 transitions. [2018-07-22 04:28:27,955 INFO L78 Accepts]: Start accepts. Automaton has 56811 states and 61047 transitions. Word has length 557 [2018-07-22 04:28:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:28:27,955 INFO L471 AbstractCegarLoop]: Abstraction has 56811 states and 61047 transitions. [2018-07-22 04:28:27,955 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-22 04:28:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 56811 states and 61047 transitions. [2018-07-22 04:28:27,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-07-22 04:28:27,968 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:28:27,968 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 04:28:27,969 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:28:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash -655000599, now seen corresponding path program 1 times [2018-07-22 04:28:27,969 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:28:27,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:28:27,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:27,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:28:27,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:28:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 463 proven. 518 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-07-22 04:28:28,898 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:28:28,898 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 04:28:28,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:28:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:28:29,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:28:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 440 proven. 293 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-07-22 04:28:30,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 04:28:30,602 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 11 [2018-07-22 04:28:30,602 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-22 04:28:30,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-22 04:28:30,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-22 04:28:30,603 INFO L87 Difference]: Start difference. First operand 56811 states and 61047 transitions. Second operand 11 states. [2018-07-22 04:28:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:28:49,925 INFO L93 Difference]: Finished difference Result 122468 states and 131403 transitions. [2018-07-22 04:28:49,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-22 04:28:49,926 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 596 [2018-07-22 04:28:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:28:49,985 INFO L225 Difference]: With dead ends: 122468 [2018-07-22 04:28:49,985 INFO L226 Difference]: Without dead ends: 66936 [2018-07-22 04:28:50,011 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-07-22 04:28:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66936 states. [2018-07-22 04:28:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66936 to 61071. [2018-07-22 04:28:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61071 states. [2018-07-22 04:28:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61071 states to 61071 states and 65361 transitions. [2018-07-22 04:28:51,142 INFO L78 Accepts]: Start accepts. Automaton has 61071 states and 65361 transitions. Word has length 596 [2018-07-22 04:28:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:28:51,143 INFO L471 AbstractCegarLoop]: Abstraction has 61071 states and 65361 transitions. [2018-07-22 04:28:51,143 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-22 04:28:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 61071 states and 65361 transitions. [2018-07-22 04:28:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-07-22 04:28:51,158 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:28:51,158 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 04:28:51,158 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:28:51,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2003913077, now seen corresponding path program 1 times [2018-07-22 04:28:51,159 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:28:51,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:28:51,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:51,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:28:51,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:28:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-07-22 04:28:51,687 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:28:51,687 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:28:51,688 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:28:51,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:28:51,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:28:51,688 INFO L87 Difference]: Start difference. First operand 61071 states and 65361 transitions. Second operand 3 states. [2018-07-22 04:28:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:28:56,022 INFO L93 Difference]: Finished difference Result 120429 states and 128826 transitions. [2018-07-22 04:28:56,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:28:56,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 626 [2018-07-22 04:28:56,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:28:56,074 INFO L225 Difference]: With dead ends: 120429 [2018-07-22 04:28:56,074 INFO L226 Difference]: Without dead ends: 60634 [2018-07-22 04:28:56,102 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:28:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60634 states. [2018-07-22 04:28:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60634 to 57224. [2018-07-22 04:28:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57224 states. [2018-07-22 04:28:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57224 states to 57224 states and 60619 transitions. [2018-07-22 04:28:59,008 INFO L78 Accepts]: Start accepts. Automaton has 57224 states and 60619 transitions. Word has length 626 [2018-07-22 04:28:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:28:59,009 INFO L471 AbstractCegarLoop]: Abstraction has 57224 states and 60619 transitions. [2018-07-22 04:28:59,009 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:28:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 57224 states and 60619 transitions. [2018-07-22 04:28:59,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-07-22 04:28:59,018 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:28:59,019 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2018-07-22 04:28:59,019 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:28:59,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1722061762, now seen corresponding path program 1 times [2018-07-22 04:28:59,019 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:28:59,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:28:59,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:59,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:28:59,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:28:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:28:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2018-07-22 04:28:59,684 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:28:59,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 04:28:59,685 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 04:28:59,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 04:28:59,685 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 04:28:59,686 INFO L87 Difference]: Start difference. First operand 57224 states and 60619 transitions. Second operand 3 states. [2018-07-22 04:29:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:29:03,560 INFO L93 Difference]: Finished difference Result 126394 states and 134084 transitions. [2018-07-22 04:29:03,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 04:29:03,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 646 [2018-07-22 04:29:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:29:03,664 INFO L225 Difference]: With dead ends: 126394 [2018-07-22 04:29:03,664 INFO L226 Difference]: Without dead ends: 70873 [2018-07-22 04:29:03,689 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 04:29:03,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70873 states. [2018-07-22 04:29:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70873 to 69154. [2018-07-22 04:29:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69154 states. [2018-07-22 04:29:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69154 states to 69154 states and 72988 transitions. [2018-07-22 04:29:04,582 INFO L78 Accepts]: Start accepts. Automaton has 69154 states and 72988 transitions. Word has length 646 [2018-07-22 04:29:04,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:29:04,583 INFO L471 AbstractCegarLoop]: Abstraction has 69154 states and 72988 transitions. [2018-07-22 04:29:04,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-22 04:29:04,583 INFO L276 IsEmpty]: Start isEmpty. Operand 69154 states and 72988 transitions. [2018-07-22 04:29:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-07-22 04:29:04,594 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:29:04,594 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 04:29:04,594 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:29:04,595 INFO L82 PathProgramCache]: Analyzing trace with hash 768518348, now seen corresponding path program 1 times [2018-07-22 04:29:04,595 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:29:04,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:29:04,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:29:04,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:29:04,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:29:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:29:05,273 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-07-22 04:29:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-07-22 04:29:05,487 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:29:05,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 04:29:05,488 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 04:29:05,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 04:29:05,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-22 04:29:05,488 INFO L87 Difference]: Start difference. First operand 69154 states and 72988 transitions. Second operand 5 states. [2018-07-22 04:29:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:29:13,410 INFO L93 Difference]: Finished difference Result 146832 states and 155066 transitions. [2018-07-22 04:29:13,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 04:29:13,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 649 [2018-07-22 04:29:13,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:29:13,474 INFO L225 Difference]: With dead ends: 146832 [2018-07-22 04:29:13,474 INFO L226 Difference]: Without dead ends: 79384 [2018-07-22 04:29:13,502 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-22 04:29:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79384 states. [2018-07-22 04:29:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79384 to 71710. [2018-07-22 04:29:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71710 states. [2018-07-22 04:29:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71710 states to 71710 states and 74761 transitions. [2018-07-22 04:29:14,206 INFO L78 Accepts]: Start accepts. Automaton has 71710 states and 74761 transitions. Word has length 649 [2018-07-22 04:29:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:29:14,206 INFO L471 AbstractCegarLoop]: Abstraction has 71710 states and 74761 transitions. [2018-07-22 04:29:14,207 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 04:29:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 71710 states and 74761 transitions. [2018-07-22 04:29:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2018-07-22 04:29:14,214 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:29:14,215 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 04:29:14,215 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:29:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash 95183649, now seen corresponding path program 1 times [2018-07-22 04:29:14,215 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:29:14,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:29:14,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:29:14,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:29:14,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:29:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:29:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2018-07-22 04:29:15,501 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 04:29:15,501 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-22 04:29:15,502 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 04:29:15,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 04:29:15,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 04:29:15,502 INFO L87 Difference]: Start difference. First operand 71710 states and 74761 transitions. Second operand 5 states. [2018-07-22 04:29:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 04:29:20,969 INFO L93 Difference]: Finished difference Result 163888 states and 170994 transitions. [2018-07-22 04:29:20,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 04:29:20,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 696 [2018-07-22 04:29:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 04:29:21,062 INFO L225 Difference]: With dead ends: 163888 [2018-07-22 04:29:21,062 INFO L226 Difference]: Without dead ends: 93032 [2018-07-22 04:29:21,093 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-22 04:29:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93032 states. [2018-07-22 04:29:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93032 to 75974. [2018-07-22 04:29:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75974 states. [2018-07-22 04:29:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75974 states to 75974 states and 79214 transitions. [2018-07-22 04:29:21,942 INFO L78 Accepts]: Start accepts. Automaton has 75974 states and 79214 transitions. Word has length 696 [2018-07-22 04:29:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 04:29:21,943 INFO L471 AbstractCegarLoop]: Abstraction has 75974 states and 79214 transitions. [2018-07-22 04:29:21,943 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 04:29:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 75974 states and 79214 transitions. [2018-07-22 04:29:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2018-07-22 04:29:21,950 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 04:29:21,951 INFO L358 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 04:29:21,951 INFO L414 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 04:29:21,951 INFO L82 PathProgramCache]: Analyzing trace with hash 381154842, now seen corresponding path program 1 times [2018-07-22 04:29:21,952 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 04:29:21,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 04:29:21,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:29:21,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:29:21,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 04:29:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:29:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 22 proven. 961 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-07-22 04:29:23,793 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 04:29:23,794 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-22 04:29:23,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 04:29:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 04:29:23,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 04:29:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 578 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-07-22 04:29:24,610 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 04:29:24,611 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2018-07-22 04:29:24,611 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 04:29:24,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 04:29:24,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-22 04:29:24,612 INFO L87 Difference]: Start difference. First operand 75974 states and 79214 transitions. Second operand 8 states. Received shutdown request... [2018-07-22 04:29:27,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-22 04:29:27,192 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 04:29:27,197 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 04:29:27,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 04:29:27 BoogieIcfgContainer [2018-07-22 04:29:27,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 04:29:27,198 INFO L168 Benchmark]: Toolchain (without parser) took 228131.43 ms. Allocated memory was 308.3 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 246.5 MB in the beginning and 970.2 MB in the end (delta: -723.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-22 04:29:27,200 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 04:29:27,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1944.68 ms. Allocated memory was 308.3 MB in the beginning and 337.6 MB in the end (delta: 29.4 MB). Free memory was 244.5 MB in the beginning and 170.5 MB in the end (delta: 74.0 MB). Peak memory consumption was 103.4 MB. Max. memory is 5.3 GB. [2018-07-22 04:29:27,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 479.22 ms. Allocated memory was 337.6 MB in the beginning and 407.9 MB in the end (delta: 70.3 MB). Free memory was 170.5 MB in the beginning and 275.9 MB in the end (delta: -105.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 5.3 GB. [2018-07-22 04:29:27,202 INFO L168 Benchmark]: Boogie Preprocessor took 1213.23 ms. Allocated memory was 407.9 MB in the beginning and 607.6 MB in the end (delta: 199.8 MB). Free memory was 275.9 MB in the beginning and 504.2 MB in the end (delta: -228.3 MB). Peak memory consumption was 65.5 MB. Max. memory is 5.3 GB. [2018-07-22 04:29:27,202 INFO L168 Benchmark]: RCFGBuilder took 10762.46 ms. Allocated memory was 607.6 MB in the beginning and 718.3 MB in the end (delta: 110.6 MB). Free memory was 504.2 MB in the beginning and 491.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 209.8 MB. Max. memory is 5.3 GB. [2018-07-22 04:29:27,203 INFO L168 Benchmark]: TraceAbstraction took 213721.64 ms. Allocated memory was 718.3 MB in the beginning and 2.2 GB in the end (delta: 1.4 GB). Free memory was 491.3 MB in the beginning and 970.2 MB in the end (delta: -478.9 MB). Peak memory consumption was 962.9 MB. Max. memory is 5.3 GB. [2018-07-22 04:29:27,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 308.3 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 1944.68 ms. Allocated memory was 308.3 MB in the beginning and 337.6 MB in the end (delta: 29.4 MB). Free memory was 244.5 MB in the beginning and 170.5 MB in the end (delta: 74.0 MB). Peak memory consumption was 103.4 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 479.22 ms. Allocated memory was 337.6 MB in the beginning and 407.9 MB in the end (delta: 70.3 MB). Free memory was 170.5 MB in the beginning and 275.9 MB in the end (delta: -105.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1213.23 ms. Allocated memory was 407.9 MB in the beginning and 607.6 MB in the end (delta: 199.8 MB). Free memory was 275.9 MB in the beginning and 504.2 MB in the end (delta: -228.3 MB). Peak memory consumption was 65.5 MB. Max. memory is 5.3 GB. * RCFGBuilder took 10762.46 ms. Allocated memory was 607.6 MB in the beginning and 718.3 MB in the end (delta: 110.6 MB). Free memory was 504.2 MB in the beginning and 491.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 209.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 213721.64 ms. Allocated memory was 718.3 MB in the beginning and 2.2 GB in the end (delta: 1.4 GB). Free memory was 491.3 MB in the beginning and 970.2 MB in the end (delta: -478.9 MB). Peak memory consumption was 962.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 77). Cancelled while BasicCegarLoop was constructing difference of abstraction (75974states) and interpolant automaton (currently 9 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (4296 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 213.6s OverallTime, 18 OverallIterations, 6 TraceHistogramMax, 179.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6788 SDtfs, 38004 SDslu, 3860 SDs, 0 SdLazy, 78738 SolverSat, 10755 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 157.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3408 GetRequests, 3280 SyntacticMatches, 11 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75974occurred in iteration=17, 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: 11.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 91700 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 10894 NumberOfCodeBlocks, 10894 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 10869 ConstructedInterpolants, 632 QuantifiedInterpolants, 31835102 SizeOfPredicates, 8 NumberOfNonLiveVariables, 4143 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 10239/13448 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_label25_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_04-29-27-220.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label25_false-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_04-29-27-220.csv Completed graceful shutdown