java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:08:22,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:08:22,528 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:08:22,539 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 15:08:22,572 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:08:22,583 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:08:22,583 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:08:22,587 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:08:22,587 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:08:22,588 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:08:22,588 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:08:22,588 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:08:22,589 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:08:22,589 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:08:22,589 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:08:22,589 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:08:22,590 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:08:22,590 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:08:22,591 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:08:22,591 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:08:22,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:08:22,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:08:22,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:08:22,668 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:08:22,669 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:08:22,669 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl [2018-10-15 15:08:22,670 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl' [2018-10-15 15:08:22,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:08:22,755 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:08:22,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:08:22,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:08:22,756 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:08:22,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... [2018-10-15 15:08:22,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... [2018-10-15 15:08:22,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... [2018-10-15 15:08:22,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... [2018-10-15 15:08:22,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... [2018-10-15 15:08:22,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... [2018-10-15 15:08:22,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... [2018-10-15 15:08:22,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:08:22,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:08:22,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:08:22,859 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:08:22,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-15 15:08:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:08:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:08:24,174 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:08:24,175 INFO L202 PluginConnector]: Adding new model pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:24 BoogieIcfgContainer [2018-10-15 15:08:24,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:08:24,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:08:24,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:08:24,180 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:08:24,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:22" (1/2) ... [2018-10-15 15:08:24,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776b4bca and model type pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:24, skipping insertion in model container [2018-10-15 15:08:24,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:24" (2/2) ... [2018-10-15 15:08:24,184 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl [2018-10-15 15:08:24,194 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:08:24,202 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:08:24,219 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:08:24,245 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:08:24,246 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:08:24,246 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:08:24,246 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:08:24,246 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:08:24,247 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:08:24,247 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:08:24,247 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:08:24,247 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:08:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2018-10-15 15:08:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-15 15:08:24,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:24,303 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:24,304 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:24,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 792198847, now seen corresponding path program 1 times [2018-10-15 15:08:24,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:24,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:24,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:24,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:24,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:24,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:24,986 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2018-10-15 15:08:25,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:25,076 INFO L93 Difference]: Finished difference Result 397 states and 412 transitions. [2018-10-15 15:08:25,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:25,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2018-10-15 15:08:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:25,103 INFO L225 Difference]: With dead ends: 397 [2018-10-15 15:08:25,103 INFO L226 Difference]: Without dead ends: 397 [2018-10-15 15:08:25,106 INFO L605 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 [2018-10-15 15:08:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-10-15 15:08:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 394. [2018-10-15 15:08:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-10-15 15:08:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 410 transitions. [2018-10-15 15:08:25,172 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 410 transitions. Word has length 255 [2018-10-15 15:08:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:25,174 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 410 transitions. [2018-10-15 15:08:25,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 410 transitions. [2018-10-15 15:08:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-15 15:08:25,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:25,181 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:25,181 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:25,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:25,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1613414550, now seen corresponding path program 1 times [2018-10-15 15:08:25,184 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:25,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:25,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:25,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:25,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:25,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:25,447 INFO L87 Difference]: Start difference. First operand 394 states and 410 transitions. Second operand 3 states. [2018-10-15 15:08:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:25,498 INFO L93 Difference]: Finished difference Result 596 states and 626 transitions. [2018-10-15 15:08:25,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:25,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2018-10-15 15:08:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:25,517 INFO L225 Difference]: With dead ends: 596 [2018-10-15 15:08:25,517 INFO L226 Difference]: Without dead ends: 596 [2018-10-15 15:08:25,521 INFO L605 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 [2018-10-15 15:08:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2018-10-15 15:08:25,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 593. [2018-10-15 15:08:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2018-10-15 15:08:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 624 transitions. [2018-10-15 15:08:25,577 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 624 transitions. Word has length 256 [2018-10-15 15:08:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:25,578 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 624 transitions. [2018-10-15 15:08:25,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 624 transitions. [2018-10-15 15:08:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-15 15:08:25,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:25,592 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:25,592 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:25,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:25,593 INFO L82 PathProgramCache]: Analyzing trace with hash 505891012, now seen corresponding path program 1 times [2018-10-15 15:08:25,595 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:25,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:25,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:25,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:25,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:25,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:25,886 INFO L87 Difference]: Start difference. First operand 593 states and 624 transitions. Second operand 3 states. [2018-10-15 15:08:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:25,945 INFO L93 Difference]: Finished difference Result 976 states and 1034 transitions. [2018-10-15 15:08:25,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:25,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 257 [2018-10-15 15:08:25,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:25,952 INFO L225 Difference]: With dead ends: 976 [2018-10-15 15:08:25,952 INFO L226 Difference]: Without dead ends: 976 [2018-10-15 15:08:25,953 INFO L605 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 [2018-10-15 15:08:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2018-10-15 15:08:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 973. [2018-10-15 15:08:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-10-15 15:08:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1032 transitions. [2018-10-15 15:08:25,979 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1032 transitions. Word has length 257 [2018-10-15 15:08:25,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:25,980 INFO L481 AbstractCegarLoop]: Abstraction has 973 states and 1032 transitions. [2018-10-15 15:08:25,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1032 transitions. [2018-10-15 15:08:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-15 15:08:25,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:25,985 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:25,985 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:25,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:25,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1409608625, now seen corresponding path program 1 times [2018-10-15 15:08:25,987 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:26,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:26,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:26,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:26,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:26,289 INFO L87 Difference]: Start difference. First operand 973 states and 1032 transitions. Second operand 3 states. [2018-10-15 15:08:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:26,400 INFO L93 Difference]: Finished difference Result 1700 states and 1810 transitions. [2018-10-15 15:08:26,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:26,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2018-10-15 15:08:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:26,410 INFO L225 Difference]: With dead ends: 1700 [2018-10-15 15:08:26,411 INFO L226 Difference]: Without dead ends: 1700 [2018-10-15 15:08:26,411 INFO L605 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 [2018-10-15 15:08:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2018-10-15 15:08:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1697. [2018-10-15 15:08:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1697 states. [2018-10-15 15:08:26,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 1808 transitions. [2018-10-15 15:08:26,446 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 1808 transitions. Word has length 258 [2018-10-15 15:08:26,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:26,447 INFO L481 AbstractCegarLoop]: Abstraction has 1697 states and 1808 transitions. [2018-10-15 15:08:26,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:26,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 1808 transitions. [2018-10-15 15:08:26,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-15 15:08:26,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:26,451 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:26,451 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:26,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1013438665, now seen corresponding path program 1 times [2018-10-15 15:08:26,453 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:26,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:26,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:26,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:26,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:26,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:26,643 INFO L87 Difference]: Start difference. First operand 1697 states and 1808 transitions. Second operand 3 states. [2018-10-15 15:08:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:26,753 INFO L93 Difference]: Finished difference Result 3076 states and 3282 transitions. [2018-10-15 15:08:26,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:26,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2018-10-15 15:08:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:26,768 INFO L225 Difference]: With dead ends: 3076 [2018-10-15 15:08:26,768 INFO L226 Difference]: Without dead ends: 3076 [2018-10-15 15:08:26,768 INFO L605 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 [2018-10-15 15:08:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2018-10-15 15:08:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3073. [2018-10-15 15:08:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2018-10-15 15:08:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 3280 transitions. [2018-10-15 15:08:26,826 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 3280 transitions. Word has length 259 [2018-10-15 15:08:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:26,826 INFO L481 AbstractCegarLoop]: Abstraction has 3073 states and 3280 transitions. [2018-10-15 15:08:26,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 3280 transitions. [2018-10-15 15:08:26,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-15 15:08:26,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:26,831 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:26,831 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:26,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:26,831 INFO L82 PathProgramCache]: Analyzing trace with hash 260192052, now seen corresponding path program 1 times [2018-10-15 15:08:26,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:27,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:27,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:27,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:27,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:27,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:27,062 INFO L87 Difference]: Start difference. First operand 3073 states and 3280 transitions. Second operand 3 states. [2018-10-15 15:08:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:27,179 INFO L93 Difference]: Finished difference Result 5780 states and 6130 transitions. [2018-10-15 15:08:27,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:27,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2018-10-15 15:08:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:27,204 INFO L225 Difference]: With dead ends: 5780 [2018-10-15 15:08:27,204 INFO L226 Difference]: Without dead ends: 5780 [2018-10-15 15:08:27,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2018-10-15 15:08:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 5713. [2018-10-15 15:08:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5713 states. [2018-10-15 15:08:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 6064 transitions. [2018-10-15 15:08:27,311 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 6064 transitions. Word has length 260 [2018-10-15 15:08:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:27,312 INFO L481 AbstractCegarLoop]: Abstraction has 5713 states and 6064 transitions. [2018-10-15 15:08:27,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 6064 transitions. [2018-10-15 15:08:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-15 15:08:27,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:27,316 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:27,316 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:27,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash -968895537, now seen corresponding path program 1 times [2018-10-15 15:08:27,318 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:27,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:27,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:27,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:27,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:27,490 INFO L87 Difference]: Start difference. First operand 5713 states and 6064 transitions. Second operand 3 states. [2018-10-15 15:08:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:27,618 INFO L93 Difference]: Finished difference Result 8266 states and 8792 transitions. [2018-10-15 15:08:27,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:27,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2018-10-15 15:08:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:27,653 INFO L225 Difference]: With dead ends: 8266 [2018-10-15 15:08:27,653 INFO L226 Difference]: Without dead ends: 8266 [2018-10-15 15:08:27,654 INFO L605 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 [2018-10-15 15:08:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2018-10-15 15:08:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 8263. [2018-10-15 15:08:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8263 states. [2018-10-15 15:08:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 8790 transitions. [2018-10-15 15:08:27,817 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 8790 transitions. Word has length 261 [2018-10-15 15:08:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:27,818 INFO L481 AbstractCegarLoop]: Abstraction has 8263 states and 8790 transitions. [2018-10-15 15:08:27,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 8790 transitions. [2018-10-15 15:08:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-15 15:08:27,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:27,823 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:27,823 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:27,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:27,823 INFO L82 PathProgramCache]: Analyzing trace with hash 878229267, now seen corresponding path program 1 times [2018-10-15 15:08:27,826 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:28,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:28,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:08:28,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:08:28,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:08:28,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:08:28,654 INFO L87 Difference]: Start difference. First operand 8263 states and 8790 transitions. Second operand 8 states. [2018-10-15 15:08:29,203 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-15 15:08:29,491 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:08:29,803 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:08:30,060 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-15 15:08:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:30,642 INFO L93 Difference]: Finished difference Result 14676 states and 15491 transitions. [2018-10-15 15:08:30,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:08:30,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2018-10-15 15:08:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:30,706 INFO L225 Difference]: With dead ends: 14676 [2018-10-15 15:08:30,706 INFO L226 Difference]: Without dead ends: 14676 [2018-10-15 15:08:30,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:08:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14676 states. [2018-10-15 15:08:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14676 to 8839. [2018-10-15 15:08:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8839 states. [2018-10-15 15:08:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8839 states to 8839 states and 9334 transitions. [2018-10-15 15:08:30,903 INFO L78 Accepts]: Start accepts. Automaton has 8839 states and 9334 transitions. Word has length 261 [2018-10-15 15:08:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:30,904 INFO L481 AbstractCegarLoop]: Abstraction has 8839 states and 9334 transitions. [2018-10-15 15:08:30,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:08:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8839 states and 9334 transitions. [2018-10-15 15:08:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-15 15:08:30,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:30,916 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:30,917 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:30,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash -66911968, now seen corresponding path program 1 times [2018-10-15 15:08:30,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:31,403 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-15 15:08:31,644 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-15 15:08:32,178 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-10-15 15:08:32,428 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-15 15:08:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:33,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:08:33,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:08:33,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:08:33,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:08:33,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:08:33,108 INFO L87 Difference]: Start difference. First operand 8839 states and 9334 transitions. Second operand 10 states. [2018-10-15 15:08:34,626 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-10-15 15:08:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:34,961 INFO L93 Difference]: Finished difference Result 7165 states and 7531 transitions. [2018-10-15 15:08:34,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:08:34,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 342 [2018-10-15 15:08:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:34,993 INFO L225 Difference]: With dead ends: 7165 [2018-10-15 15:08:34,994 INFO L226 Difference]: Without dead ends: 7021 [2018-10-15 15:08:34,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:08:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7021 states. [2018-10-15 15:08:35,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7021 to 4743. [2018-10-15 15:08:35,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4743 states. [2018-10-15 15:08:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 4982 transitions. [2018-10-15 15:08:35,062 INFO L78 Accepts]: Start accepts. Automaton has 4743 states and 4982 transitions. Word has length 342 [2018-10-15 15:08:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:35,063 INFO L481 AbstractCegarLoop]: Abstraction has 4743 states and 4982 transitions. [2018-10-15 15:08:35,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:08:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 4743 states and 4982 transitions. [2018-10-15 15:08:35,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-15 15:08:35,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:35,071 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:08:35,072 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:35,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash 829460019, now seen corresponding path program 1 times [2018-10-15 15:08:35,075 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:35,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:35,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:35,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:35,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:35,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:35,411 INFO L87 Difference]: Start difference. First operand 4743 states and 4982 transitions. Second operand 3 states. [2018-10-15 15:08:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:35,498 INFO L93 Difference]: Finished difference Result 284 states and 283 transitions. [2018-10-15 15:08:35,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:35,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 343 [2018-10-15 15:08:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:35,500 INFO L225 Difference]: With dead ends: 284 [2018-10-15 15:08:35,500 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:08:35,500 INFO L605 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 [2018-10-15 15:08:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:08:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:08:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:08:35,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:08:35,501 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 343 [2018-10-15 15:08:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:35,501 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:08:35,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:08:35,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:08:35,508 INFO L202 PluginConnector]: Adding new model pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:08:35 BoogieIcfgContainer [2018-10-15 15:08:35,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:08:35,509 INFO L168 Benchmark]: Toolchain (without parser) took 12755.50 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 440.9 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -462.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:08:35,510 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:08:35,511 INFO L168 Benchmark]: Boogie Preprocessor took 98.63 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:08:35,511 INFO L168 Benchmark]: RCFGBuilder took 1317.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:35,512 INFO L168 Benchmark]: TraceAbstraction took 11331.23 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 440.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -515.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:08:35,518 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.63 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1317.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11331.23 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 440.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -515.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 516]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 292 locations, 1 error locations. SAFE Result, 11.2s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 4.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3535 SDtfs, 2667 SDslu, 4819 SDs, 0 SdLazy, 474 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8839occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 8200 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2752 NumberOfCodeBlocks, 2752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2742 ConstructedInterpolants, 0 QuantifiedInterpolants, 3143843 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 101/111 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-08-35-539.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.6.ufo.UNBOUNDED.pals.c_23.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-08-35-539.csv Received shutdown request...