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.3.1.ufo.UNBOUNDED.pals.c_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:07:56,067 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:07:56,070 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:07:56,086 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:07:56,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:07:56,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:07:56,090 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:07:56,093 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:07:56,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:07:56,102 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:07:56,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 15:07:56,125 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 15:07:56,134 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:07:56,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:07:56,136 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:07:56,136 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:07:56,136 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:07:56,136 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:07:56,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:07:56,137 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:07:56,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:07:56,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:07:56,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:07:56,138 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:07:56,138 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:07:56,139 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:07:56,139 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:07:56,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:07:56,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:07:56,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:07:56,201 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:07:56,202 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:07:56,203 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl [2018-10-15 15:07:56,203 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl' [2018-10-15 15:07:56,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:07:56,283 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:07:56,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:07:56,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:07:56,284 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:07:56,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/1) ... [2018-10-15 15:07:56,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/1) ... [2018-10-15 15:07:56,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/1) ... [2018-10-15 15:07:56,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/1) ... [2018-10-15 15:07:56,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/1) ... [2018-10-15 15:07:56,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/1) ... [2018-10-15 15:07:56,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/1) ... [2018-10-15 15:07:56,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:07:56,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:07:56,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:07:56,368 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:07:56,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (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 15:07:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:07:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:07:57,346 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:07:57,346 INFO L202 PluginConnector]: Adding new model pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:57 BoogieIcfgContainer [2018-10-15 15:07:57,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:07:57,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:07:57,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:07:57,351 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:07:57,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:07:56" (1/2) ... [2018-10-15 15:07:57,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d38273a and model type pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:57, skipping insertion in model container [2018-10-15 15:07:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:57" (2/2) ... [2018-10-15 15:07:57,354 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl [2018-10-15 15:07:57,364 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:07:57,373 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:07:57,390 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:07:57,415 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:07:57,415 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:07:57,416 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:07:57,416 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:07:57,416 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:07:57,416 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:07:57,416 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:07:57,416 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:07:57,417 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:07:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2018-10-15 15:07:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-15 15:07:57,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:57,458 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] [2018-10-15 15:07:57,459 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:57,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:57,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1155977409, now seen corresponding path program 1 times [2018-10-15 15:07:57,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:57,831 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 15:07:57,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:57,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:57,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:57,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:57,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:57,860 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2018-10-15 15:07:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:57,977 INFO L93 Difference]: Finished difference Result 226 states and 235 transitions. [2018-10-15 15:07:57,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:57,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2018-10-15 15:07:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:57,994 INFO L225 Difference]: With dead ends: 226 [2018-10-15 15:07:57,994 INFO L226 Difference]: Without dead ends: 226 [2018-10-15 15:07:57,997 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 15:07:58,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-10-15 15:07:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2018-10-15 15:07:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-15 15:07:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 233 transitions. [2018-10-15 15:07:58,055 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 233 transitions. Word has length 144 [2018-10-15 15:07:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:58,056 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 233 transitions. [2018-10-15 15:07:58,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 233 transitions. [2018-10-15 15:07:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-15 15:07:58,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:58,060 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] [2018-10-15 15:07:58,061 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:58,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:58,061 INFO L82 PathProgramCache]: Analyzing trace with hash 504411175, now seen corresponding path program 1 times [2018-10-15 15:07:58,063 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:58,257 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 15:07:58,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:58,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:58,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:58,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:58,261 INFO L87 Difference]: Start difference. First operand 223 states and 233 transitions. Second operand 3 states. [2018-10-15 15:07:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:58,303 INFO L93 Difference]: Finished difference Result 335 states and 353 transitions. [2018-10-15 15:07:58,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:58,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2018-10-15 15:07:58,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:58,315 INFO L225 Difference]: With dead ends: 335 [2018-10-15 15:07:58,315 INFO L226 Difference]: Without dead ends: 335 [2018-10-15 15:07:58,316 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 15:07:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-15 15:07:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 332. [2018-10-15 15:07:58,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-10-15 15:07:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 351 transitions. [2018-10-15 15:07:58,353 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 351 transitions. Word has length 145 [2018-10-15 15:07:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:58,354 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 351 transitions. [2018-10-15 15:07:58,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:58,354 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 351 transitions. [2018-10-15 15:07:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-15 15:07:58,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:58,358 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] [2018-10-15 15:07:58,360 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:58,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:58,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1394691866, now seen corresponding path program 1 times [2018-10-15 15:07:58,363 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:58,610 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 15:07:58,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:58,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:07:58,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:07:58,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:07:58,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:07:58,612 INFO L87 Difference]: Start difference. First operand 332 states and 351 transitions. Second operand 3 states. [2018-10-15 15:07:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:58,680 INFO L93 Difference]: Finished difference Result 547 states and 577 transitions. [2018-10-15 15:07:58,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:07:58,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2018-10-15 15:07:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:58,688 INFO L225 Difference]: With dead ends: 547 [2018-10-15 15:07:58,689 INFO L226 Difference]: Without dead ends: 547 [2018-10-15 15:07:58,689 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 15:07:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2018-10-15 15:07:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 536. [2018-10-15 15:07:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2018-10-15 15:07:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 567 transitions. [2018-10-15 15:07:58,720 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 567 transitions. Word has length 146 [2018-10-15 15:07:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:58,721 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 567 transitions. [2018-10-15 15:07:58,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:07:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 567 transitions. [2018-10-15 15:07:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-15 15:07:58,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:58,725 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] [2018-10-15 15:07:58,725 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:58,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:58,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1116375697, now seen corresponding path program 1 times [2018-10-15 15:07:58,727 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:58,964 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 15:07:58,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:07:58,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:07:58,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:07:58,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:07:58,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:07:58,967 INFO L87 Difference]: Start difference. First operand 536 states and 567 transitions. Second operand 8 states. [2018-10-15 15:07:59,374 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:07:59,999 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-15 15:08:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:00,199 INFO L93 Difference]: Finished difference Result 878 states and 922 transitions. [2018-10-15 15:08:00,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:08:00,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2018-10-15 15:08:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:00,205 INFO L225 Difference]: With dead ends: 878 [2018-10-15 15:08:00,205 INFO L226 Difference]: Without dead ends: 878 [2018-10-15 15:08:00,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:08:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2018-10-15 15:08:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 572. [2018-10-15 15:08:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2018-10-15 15:08:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 599 transitions. [2018-10-15 15:08:00,224 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 599 transitions. Word has length 147 [2018-10-15 15:08:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:00,225 INFO L481 AbstractCegarLoop]: Abstraction has 572 states and 599 transitions. [2018-10-15 15:08:00,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:08:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 599 transitions. [2018-10-15 15:08:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-15 15:08:00,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:00,229 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] [2018-10-15 15:08:00,229 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:00,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:00,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1542335135, now seen corresponding path program 1 times [2018-10-15 15:08:00,231 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:00,361 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 15:08:00,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:00,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:00,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:00,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:00,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:00,365 INFO L87 Difference]: Start difference. First operand 572 states and 599 transitions. Second operand 3 states. [2018-10-15 15:08:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:00,417 INFO L93 Difference]: Finished difference Result 809 states and 851 transitions. [2018-10-15 15:08:00,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:00,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2018-10-15 15:08:00,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:00,423 INFO L225 Difference]: With dead ends: 809 [2018-10-15 15:08:00,424 INFO L226 Difference]: Without dead ends: 809 [2018-10-15 15:08:00,424 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 15:08:00,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2018-10-15 15:08:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 806. [2018-10-15 15:08:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2018-10-15 15:08:00,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 849 transitions. [2018-10-15 15:08:00,445 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 849 transitions. Word has length 148 [2018-10-15 15:08:00,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:00,445 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 849 transitions. [2018-10-15 15:08:00,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:00,446 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 849 transitions. [2018-10-15 15:08:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-15 15:08:00,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:00,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:00,449 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:00,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:00,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2098038502, now seen corresponding path program 1 times [2018-10-15 15:08:00,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:01,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:08:01,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:08:01,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:08:01,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:08:01,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:08:01,090 INFO L87 Difference]: Start difference. First operand 806 states and 849 transitions. Second operand 10 states. [2018-10-15 15:08:02,024 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-10-15 15:08:02,372 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-10-15 15:08:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:02,851 INFO L93 Difference]: Finished difference Result 747 states and 778 transitions. [2018-10-15 15:08:02,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:08:02,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2018-10-15 15:08:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:02,855 INFO L225 Difference]: With dead ends: 747 [2018-10-15 15:08:02,855 INFO L226 Difference]: Without dead ends: 729 [2018-10-15 15:08:02,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:08:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2018-10-15 15:08:02,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 505. [2018-10-15 15:08:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2018-10-15 15:08:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 526 transitions. [2018-10-15 15:08:02,867 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 526 transitions. Word has length 198 [2018-10-15 15:08:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:02,868 INFO L481 AbstractCegarLoop]: Abstraction has 505 states and 526 transitions. [2018-10-15 15:08:02,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:08:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 526 transitions. [2018-10-15 15:08:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-15 15:08:02,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:02,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:02,871 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:02,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash -898247767, now seen corresponding path program 1 times [2018-10-15 15:08:02,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:03,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:03,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:03,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:03,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:03,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:03,042 INFO L87 Difference]: Start difference. First operand 505 states and 526 transitions. Second operand 3 states. [2018-10-15 15:08:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:03,083 INFO L93 Difference]: Finished difference Result 204 states and 203 transitions. [2018-10-15 15:08:03,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:03,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2018-10-15 15:08:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:03,089 INFO L225 Difference]: With dead ends: 204 [2018-10-15 15:08:03,089 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:08:03,089 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 15:08:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:08:03,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:08:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:08:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:08:03,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 199 [2018-10-15 15:08:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:03,091 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:08:03,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:03,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:08:03,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:08:03,096 INFO L202 PluginConnector]: Adding new model pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:08:03 BoogieIcfgContainer [2018-10-15 15:08:03,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:08:03,097 INFO L168 Benchmark]: Toolchain (without parser) took 6815.63 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.8 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 103.0 MB). Peak memory consumption was 130.8 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:03,099 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 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 15:08:03,099 INFO L168 Benchmark]: Boogie Preprocessor took 79.47 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 15:08:03,100 INFO L168 Benchmark]: RCFGBuilder took 982.69 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:03,101 INFO L168 Benchmark]: TraceAbstraction took 5748.76 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.8 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 71.3 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:03,105 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 0.17 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 79.47 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 982.69 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5748.76 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.8 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 71.3 MB). Peak memory consumption was 99.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 300]: 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, 166 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1378 SDtfs, 1169 SDslu, 2489 SDs, 0 SdLazy, 347 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=806occurred in iteration=5, 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 550 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1127 NumberOfCodeBlocks, 1127 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1120 ConstructedInterpolants, 0 QuantifiedInterpolants, 824756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 61/75 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.3.1.ufo.UNBOUNDED.pals.c_14.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-08-03-117.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.3.1.ufo.UNBOUNDED.pals.c_14.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-08-03-117.csv Received shutdown request...