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.4.ufo.BOUNDED-8.pals.c_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:08:05,561 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:08:05,564 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:08:05,579 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 15:08:05,616 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 15:08:05,636 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:08:05,636 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:08:05,637 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:08:05,637 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:08:05,638 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:08:05,640 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:08:05,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:08:05,641 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:08:05,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:08:05,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:08:05,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:08:05,642 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:08:05,642 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:08:05,644 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:08:05,645 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:08:05,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:08:05,701 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:08:05,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:08:05,706 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:08:05,706 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:08:05,707 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl [2018-10-15 15:08:05,708 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl' [2018-10-15 15:08:05,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:08:05,785 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:08:05,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:08:05,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:08:05,786 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:08:05,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/1) ... [2018-10-15 15:08:05,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/1) ... [2018-10-15 15:08:05,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/1) ... [2018-10-15 15:08:05,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/1) ... [2018-10-15 15:08:05,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/1) ... [2018-10-15 15:08:05,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/1) ... [2018-10-15 15:08:05,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/1) ... [2018-10-15 15:08:05,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:08:05,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:08:05,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:08:05,881 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:08:05,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (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 15:08:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:08:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:08:06,918 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:08:06,919 INFO L202 PluginConnector]: Adding new model pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:06 BoogieIcfgContainer [2018-10-15 15:08:06,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:08:06,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:08:06,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:08:06,924 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:08:06,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:05" (1/2) ... [2018-10-15 15:08:06,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143bca3e and model type pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:06, skipping insertion in model container [2018-10-15 15:08:06,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:06" (2/2) ... [2018-10-15 15:08:06,927 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl [2018-10-15 15:08:06,937 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:08:06,946 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:08:06,963 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:08:06,991 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:08:06,992 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:08:06,992 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:08:06,993 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:08:06,993 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:08:06,993 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:08:06,993 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:08:06,993 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:08:06,993 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:08:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2018-10-15 15:08:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-15 15:08:07,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:07,040 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] [2018-10-15 15:08:07,041 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:07,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1875403298, now seen corresponding path program 1 times [2018-10-15 15:08:07,117 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:07,532 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 15:08:07,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:07,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:07,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:07,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:07,568 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 3 states. [2018-10-15 15:08:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:07,658 INFO L93 Difference]: Finished difference Result 286 states and 297 transitions. [2018-10-15 15:08:07,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:07,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-10-15 15:08:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:07,676 INFO L225 Difference]: With dead ends: 286 [2018-10-15 15:08:07,677 INFO L226 Difference]: Without dead ends: 286 [2018-10-15 15:08:07,679 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 15:08:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-10-15 15:08:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 283. [2018-10-15 15:08:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-15 15:08:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 295 transitions. [2018-10-15 15:08:07,756 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 295 transitions. Word has length 181 [2018-10-15 15:08:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:07,757 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 295 transitions. [2018-10-15 15:08:07,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 295 transitions. [2018-10-15 15:08:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-15 15:08:07,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:07,766 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] [2018-10-15 15:08:07,767 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:07,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:07,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1729597566, now seen corresponding path program 1 times [2018-10-15 15:08:07,771 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:08,047 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 15:08:08,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:08,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:08,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:08,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:08,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:08,051 INFO L87 Difference]: Start difference. First operand 283 states and 295 transitions. Second operand 3 states. [2018-10-15 15:08:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:08,095 INFO L93 Difference]: Finished difference Result 428 states and 450 transitions. [2018-10-15 15:08:08,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:08,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-10-15 15:08:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:08,103 INFO L225 Difference]: With dead ends: 428 [2018-10-15 15:08:08,103 INFO L226 Difference]: Without dead ends: 428 [2018-10-15 15:08:08,104 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 15:08:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-10-15 15:08:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 425. [2018-10-15 15:08:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-10-15 15:08:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 448 transitions. [2018-10-15 15:08:08,131 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 448 transitions. Word has length 181 [2018-10-15 15:08:08,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:08,132 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 448 transitions. [2018-10-15 15:08:08,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 448 transitions. [2018-10-15 15:08:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-15 15:08:08,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:08,136 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] [2018-10-15 15:08:08,136 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:08,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:08,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1723353224, now seen corresponding path program 1 times [2018-10-15 15:08:08,139 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:08,318 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 15:08:08,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:08,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:08,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:08,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:08,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:08,320 INFO L87 Difference]: Start difference. First operand 425 states and 448 transitions. Second operand 3 states. [2018-10-15 15:08:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:08,383 INFO L93 Difference]: Finished difference Result 694 states and 736 transitions. [2018-10-15 15:08:08,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:08,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-15 15:08:08,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:08,389 INFO L225 Difference]: With dead ends: 694 [2018-10-15 15:08:08,390 INFO L226 Difference]: Without dead ends: 694 [2018-10-15 15:08:08,390 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 15:08:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2018-10-15 15:08:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 691. [2018-10-15 15:08:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2018-10-15 15:08:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 734 transitions. [2018-10-15 15:08:08,422 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 734 transitions. Word has length 182 [2018-10-15 15:08:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:08,423 INFO L481 AbstractCegarLoop]: Abstraction has 691 states and 734 transitions. [2018-10-15 15:08:08,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 734 transitions. [2018-10-15 15:08:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-15 15:08:08,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:08,427 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] [2018-10-15 15:08:08,427 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:08,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:08,428 INFO L82 PathProgramCache]: Analyzing trace with hash 716229347, now seen corresponding path program 1 times [2018-10-15 15:08:08,429 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:08,582 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 15:08:08,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:08,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:08,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:08,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:08,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:08,584 INFO L87 Difference]: Start difference. First operand 691 states and 734 transitions. Second operand 3 states. [2018-10-15 15:08:08,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:08,642 INFO L93 Difference]: Finished difference Result 1190 states and 1268 transitions. [2018-10-15 15:08:08,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:08,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-15 15:08:08,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:08,649 INFO L225 Difference]: With dead ends: 1190 [2018-10-15 15:08:08,649 INFO L226 Difference]: Without dead ends: 1190 [2018-10-15 15:08:08,649 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 15:08:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2018-10-15 15:08:08,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1187. [2018-10-15 15:08:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2018-10-15 15:08:08,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1266 transitions. [2018-10-15 15:08:08,679 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1266 transitions. Word has length 183 [2018-10-15 15:08:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:08,680 INFO L481 AbstractCegarLoop]: Abstraction has 1187 states and 1266 transitions. [2018-10-15 15:08:08,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1266 transitions. [2018-10-15 15:08:08,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-15 15:08:08,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:08,684 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] [2018-10-15 15:08:08,685 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:08,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash -520975290, now seen corresponding path program 1 times [2018-10-15 15:08:08,687 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:08,879 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 15:08:08,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:08,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:08,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:08,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:08,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:08,882 INFO L87 Difference]: Start difference. First operand 1187 states and 1266 transitions. Second operand 3 states. [2018-10-15 15:08:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:09,035 INFO L93 Difference]: Finished difference Result 1720 states and 1826 transitions. [2018-10-15 15:08:09,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:09,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2018-10-15 15:08:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:09,044 INFO L225 Difference]: With dead ends: 1720 [2018-10-15 15:08:09,045 INFO L226 Difference]: Without dead ends: 1720 [2018-10-15 15:08:09,045 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 15:08:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2018-10-15 15:08:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1709. [2018-10-15 15:08:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2018-10-15 15:08:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 1816 transitions. [2018-10-15 15:08:09,087 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 1816 transitions. Word has length 184 [2018-10-15 15:08:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:09,088 INFO L481 AbstractCegarLoop]: Abstraction has 1709 states and 1816 transitions. [2018-10-15 15:08:09,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 1816 transitions. [2018-10-15 15:08:09,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-15 15:08:09,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:09,093 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] [2018-10-15 15:08:09,093 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:09,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:09,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1863122042, now seen corresponding path program 1 times [2018-10-15 15:08:09,096 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:09,541 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 15:08:09,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:09,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:08:09,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:08:09,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:08:09,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:08:09,543 INFO L87 Difference]: Start difference. First operand 1709 states and 1816 transitions. Second operand 8 states. [2018-10-15 15:08:10,550 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:08:11,102 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-15 15:08:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:11,550 INFO L93 Difference]: Finished difference Result 3052 states and 3215 transitions. [2018-10-15 15:08:11,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:08:11,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 185 [2018-10-15 15:08:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:11,564 INFO L225 Difference]: With dead ends: 3052 [2018-10-15 15:08:11,565 INFO L226 Difference]: Without dead ends: 3052 [2018-10-15 15:08:11,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:08:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2018-10-15 15:08:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 1853. [2018-10-15 15:08:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1853 states. [2018-10-15 15:08:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 1952 transitions. [2018-10-15 15:08:11,616 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 1952 transitions. Word has length 185 [2018-10-15 15:08:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:11,616 INFO L481 AbstractCegarLoop]: Abstraction has 1853 states and 1952 transitions. [2018-10-15 15:08:11,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:08:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 1952 transitions. [2018-10-15 15:08:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-15 15:08:11,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:11,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:11,623 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:11,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:11,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1794393531, now seen corresponding path program 1 times [2018-10-15 15:08:11,626 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-15 15:08:12,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:08:12,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-15 15:08:12,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 15:08:12,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 15:08:12,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:08:12,119 INFO L87 Difference]: Start difference. First operand 1853 states and 1952 transitions. Second operand 4 states. [2018-10-15 15:08:12,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:12,285 INFO L93 Difference]: Finished difference Result 2893 states and 3024 transitions. [2018-10-15 15:08:12,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-15 15:08:12,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2018-10-15 15:08:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:12,300 INFO L225 Difference]: With dead ends: 2893 [2018-10-15 15:08:12,300 INFO L226 Difference]: Without dead ends: 2893 [2018-10-15 15:08:12,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:08:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2018-10-15 15:08:12,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2885. [2018-10-15 15:08:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2885 states. [2018-10-15 15:08:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3016 transitions. [2018-10-15 15:08:12,356 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3016 transitions. Word has length 248 [2018-10-15 15:08:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:12,357 INFO L481 AbstractCegarLoop]: Abstraction has 2885 states and 3016 transitions. [2018-10-15 15:08:12,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 15:08:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3016 transitions. [2018-10-15 15:08:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-15 15:08:12,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:12,370 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-15 15:08:12,370 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:12,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:12,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1535773331, now seen corresponding path program 2 times [2018-10-15 15:08:12,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:13,186 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-15 15:08:13,560 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-15 15:08:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 102 proven. 136 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-15 15:08:13,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:08:13,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-15 15:08:13,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-15 15:08:13,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-15 15:08:13,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-10-15 15:08:13,916 INFO L87 Difference]: Start difference. First operand 2885 states and 3016 transitions. Second operand 11 states. [2018-10-15 15:08:15,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:15,303 INFO L93 Difference]: Finished difference Result 2461 states and 2559 transitions. [2018-10-15 15:08:15,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-15 15:08:15,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 377 [2018-10-15 15:08:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:15,316 INFO L225 Difference]: With dead ends: 2461 [2018-10-15 15:08:15,316 INFO L226 Difference]: Without dead ends: 2401 [2018-10-15 15:08:15,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2018-10-15 15:08:15,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2018-10-15 15:08:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1621. [2018-10-15 15:08:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2018-10-15 15:08:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1684 transitions. [2018-10-15 15:08:15,356 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1684 transitions. Word has length 377 [2018-10-15 15:08:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:15,357 INFO L481 AbstractCegarLoop]: Abstraction has 1621 states and 1684 transitions. [2018-10-15 15:08:15,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-15 15:08:15,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1684 transitions. [2018-10-15 15:08:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-15 15:08:15,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:15,367 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-15 15:08:15,367 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:15,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:15,368 INFO L82 PathProgramCache]: Analyzing trace with hash -981352419, now seen corresponding path program 3 times [2018-10-15 15:08:15,370 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-15 15:08:15,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:15,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:15,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:15,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:15,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:15,689 INFO L87 Difference]: Start difference. First operand 1621 states and 1684 transitions. Second operand 3 states. [2018-10-15 15:08:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:15,741 INFO L93 Difference]: Finished difference Result 210 states and 209 transitions. [2018-10-15 15:08:15,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:15,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 378 [2018-10-15 15:08:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:15,742 INFO L225 Difference]: With dead ends: 210 [2018-10-15 15:08:15,743 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:08:15,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:08:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:08:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:08:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:08:15,744 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 378 [2018-10-15 15:08:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:15,744 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:08:15,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:08:15,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:08:15,750 INFO L202 PluginConnector]: Adding new model pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:08:15 BoogieIcfgContainer [2018-10-15 15:08:15,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:08:15,751 INFO L168 Benchmark]: Toolchain (without parser) took 9966.98 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 180.4 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -17.6 MB). Peak memory consumption was 162.7 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:15,752 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 15:08:15,753 INFO L168 Benchmark]: Boogie Preprocessor took 91.87 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 15:08:15,754 INFO L168 Benchmark]: RCFGBuilder took 1040.74 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:15,754 INFO L168 Benchmark]: TraceAbstraction took 8829.99 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 180.4 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -59.9 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:15,758 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 91.87 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 1040.74 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8829.99 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 180.4 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -59.9 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 375]: 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, 210 locations, 1 error locations. SAFE Result, 8.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2271 SDtfs, 1899 SDslu, 3575 SDs, 0 SdLazy, 433 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2885occurred in iteration=7, 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: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 2010 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 2099 NumberOfCodeBlocks, 2099 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2090 ConstructedInterpolants, 0 QuantifiedInterpolants, 2276688 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 482/643 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.4.ufo.BOUNDED-8.pals.c_19.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-08-15-769.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.4.ufo.BOUNDED-8.pals.c_19.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-08-15-769.csv Received shutdown request...