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_overflow.ufo.UNBOUNDED.pals.c_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:08:08,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:08:08,092 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:08:08,104 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:08:08,105 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:08:08,106 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:08:08,107 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:08:08,109 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:08:08,111 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:08:08,111 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:08:08,112 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 15:08:08,151 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 15:08:08,163 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:08:08,163 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:08:08,163 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:08:08,164 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:08:08,164 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:08:08,164 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:08:08,167 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:08:08,167 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:08:08,167 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:08:08,167 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:08:08,167 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:08:08,168 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:08:08,168 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:08:08,169 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:08:08,169 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:08:08,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:08:08,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:08:08,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:08:08,248 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:08:08,249 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:08:08,250 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl [2018-10-15 15:08:08,250 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl' [2018-10-15 15:08:08,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:08:08,342 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:08:08,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:08:08,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:08:08,344 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:08:08,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/1) ... [2018-10-15 15:08:08,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/1) ... [2018-10-15 15:08:08,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/1) ... [2018-10-15 15:08:08,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/1) ... [2018-10-15 15:08:08,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/1) ... [2018-10-15 15:08:08,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/1) ... [2018-10-15 15:08:08,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/1) ... [2018-10-15 15:08:08,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:08:08,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:08:08,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:08:08,437 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:08:08,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (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 15:08:08,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:08:08,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:08:09,451 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:08:09,452 INFO L202 PluginConnector]: Adding new model pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:09 BoogieIcfgContainer [2018-10-15 15:08:09,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:08:09,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:08:09,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:08:09,457 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:08:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:08:08" (1/2) ... [2018-10-15 15:08:09,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb04a16 and model type pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:09, skipping insertion in model container [2018-10-15 15:08:09,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:09" (2/2) ... [2018-10-15 15:08:09,461 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl [2018-10-15 15:08:09,472 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:08:09,482 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:08:09,502 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:08:09,537 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:08:09,537 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:08:09,538 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:08:09,538 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:08:09,538 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:08:09,538 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:08:09,538 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:08:09,539 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:08:09,539 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:08:09,578 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2018-10-15 15:08:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-15 15:08:09,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:09,620 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] [2018-10-15 15:08:09,623 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:09,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:09,631 INFO L82 PathProgramCache]: Analyzing trace with hash -996061827, now seen corresponding path program 1 times [2018-10-15 15:08:09,715 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:10,073 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 15:08:10,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:10,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:10,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:10,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:10,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:10,102 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 3 states. [2018-10-15 15:08:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:10,235 INFO L93 Difference]: Finished difference Result 279 states and 290 transitions. [2018-10-15 15:08:10,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:10,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2018-10-15 15:08:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:10,255 INFO L225 Difference]: With dead ends: 279 [2018-10-15 15:08:10,255 INFO L226 Difference]: Without dead ends: 279 [2018-10-15 15:08:10,258 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 15:08:10,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-15 15:08:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 276. [2018-10-15 15:08:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-10-15 15:08:10,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 288 transitions. [2018-10-15 15:08:10,362 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 288 transitions. Word has length 180 [2018-10-15 15:08:10,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:10,363 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 288 transitions. [2018-10-15 15:08:10,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 288 transitions. [2018-10-15 15:08:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-15 15:08:10,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:10,371 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] [2018-10-15 15:08:10,372 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:10,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1686028259, now seen corresponding path program 1 times [2018-10-15 15:08:10,376 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:10,671 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 15:08:10,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:10,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:10,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:10,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:10,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:10,676 INFO L87 Difference]: Start difference. First operand 276 states and 288 transitions. Second operand 3 states. [2018-10-15 15:08:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:10,720 INFO L93 Difference]: Finished difference Result 415 states and 437 transitions. [2018-10-15 15:08:10,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:10,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2018-10-15 15:08:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:10,727 INFO L225 Difference]: With dead ends: 415 [2018-10-15 15:08:10,727 INFO L226 Difference]: Without dead ends: 415 [2018-10-15 15:08:10,728 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 15:08:10,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-15 15:08:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 412. [2018-10-15 15:08:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-10-15 15:08:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 435 transitions. [2018-10-15 15:08:10,754 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 435 transitions. Word has length 180 [2018-10-15 15:08:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:10,755 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 435 transitions. [2018-10-15 15:08:10,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 435 transitions. [2018-10-15 15:08:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-15 15:08:10,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:10,759 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 15:08:10,759 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:10,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1081832158, now seen corresponding path program 1 times [2018-10-15 15:08:10,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:10,903 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 15:08:10,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:10,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:10,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:10,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:10,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:10,905 INFO L87 Difference]: Start difference. First operand 412 states and 435 transitions. Second operand 3 states. [2018-10-15 15:08:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:10,940 INFO L93 Difference]: Finished difference Result 669 states and 711 transitions. [2018-10-15 15:08:10,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:10,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-10-15 15:08:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:10,948 INFO L225 Difference]: With dead ends: 669 [2018-10-15 15:08:10,949 INFO L226 Difference]: Without dead ends: 669 [2018-10-15 15:08:10,949 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 15:08:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2018-10-15 15:08:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 666. [2018-10-15 15:08:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2018-10-15 15:08:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 709 transitions. [2018-10-15 15:08:10,984 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 709 transitions. Word has length 181 [2018-10-15 15:08:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:10,985 INFO L481 AbstractCegarLoop]: Abstraction has 666 states and 709 transitions. [2018-10-15 15:08:10,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 709 transitions. [2018-10-15 15:08:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-15 15:08:10,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:10,988 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 15:08:10,989 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:10,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:10,989 INFO L82 PathProgramCache]: Analyzing trace with hash -345171486, now seen corresponding path program 1 times [2018-10-15 15:08:10,992 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:11,198 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 15:08:11,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:11,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:11,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:11,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:11,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:11,200 INFO L87 Difference]: Start difference. First operand 666 states and 709 transitions. Second operand 3 states. [2018-10-15 15:08:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:11,240 INFO L93 Difference]: Finished difference Result 1141 states and 1219 transitions. [2018-10-15 15:08:11,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:11,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-10-15 15:08:11,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:11,246 INFO L225 Difference]: With dead ends: 1141 [2018-10-15 15:08:11,247 INFO L226 Difference]: Without dead ends: 1141 [2018-10-15 15:08:11,247 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 15:08:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2018-10-15 15:08:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1138. [2018-10-15 15:08:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2018-10-15 15:08:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1217 transitions. [2018-10-15 15:08:11,276 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1217 transitions. Word has length 182 [2018-10-15 15:08:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:11,277 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1217 transitions. [2018-10-15 15:08:11,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:11,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1217 transitions. [2018-10-15 15:08:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-15 15:08:11,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:11,280 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 15:08:11,281 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:11,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:11,281 INFO L82 PathProgramCache]: Analyzing trace with hash 935337344, now seen corresponding path program 1 times [2018-10-15 15:08:11,283 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:11,460 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 15:08:11,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:11,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:11,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:11,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:11,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:11,462 INFO L87 Difference]: Start difference. First operand 1138 states and 1217 transitions. Second operand 3 states. [2018-10-15 15:08:11,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:11,527 INFO L93 Difference]: Finished difference Result 1647 states and 1753 transitions. [2018-10-15 15:08:11,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:11,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-15 15:08:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:11,537 INFO L225 Difference]: With dead ends: 1647 [2018-10-15 15:08:11,537 INFO L226 Difference]: Without dead ends: 1647 [2018-10-15 15:08:11,538 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 15:08:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2018-10-15 15:08:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1636. [2018-10-15 15:08:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2018-10-15 15:08:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1743 transitions. [2018-10-15 15:08:11,575 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1743 transitions. Word has length 183 [2018-10-15 15:08:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:11,576 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1743 transitions. [2018-10-15 15:08:11,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1743 transitions. [2018-10-15 15:08:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-15 15:08:11,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:11,579 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 15:08:11,579 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:11,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash 332896741, now seen corresponding path program 1 times [2018-10-15 15:08:11,581 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:11,949 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 15:08:11,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:11,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:08:11,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:08:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:08:11,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:08:11,952 INFO L87 Difference]: Start difference. First operand 1636 states and 1743 transitions. Second operand 8 states. [2018-10-15 15:08:13,141 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-15 15:08:13,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:13,593 INFO L93 Difference]: Finished difference Result 2931 states and 3094 transitions. [2018-10-15 15:08:13,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:08:13,593 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2018-10-15 15:08:13,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:13,607 INFO L225 Difference]: With dead ends: 2931 [2018-10-15 15:08:13,608 INFO L226 Difference]: Without dead ends: 2931 [2018-10-15 15:08:13,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:08:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2018-10-15 15:08:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1780. [2018-10-15 15:08:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2018-10-15 15:08:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 1879 transitions. [2018-10-15 15:08:13,656 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 1879 transitions. Word has length 184 [2018-10-15 15:08:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:13,696 INFO L481 AbstractCegarLoop]: Abstraction has 1780 states and 1879 transitions. [2018-10-15 15:08:13,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:08:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 1879 transitions. [2018-10-15 15:08:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-15 15:08:13,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:13,704 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] [2018-10-15 15:08:13,704 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:13,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1236153353, now seen corresponding path program 1 times [2018-10-15 15:08:13,708 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:14,092 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-15 15:08:14,266 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-15 15:08:14,545 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-15 15:08:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:14,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:08:14,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-15 15:08:14,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-15 15:08:14,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-15 15:08:14,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:08:14,795 INFO L87 Difference]: Start difference. First operand 1780 states and 1879 transitions. Second operand 10 states. [2018-10-15 15:08:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:16,048 INFO L93 Difference]: Finished difference Result 1631 states and 1707 transitions. [2018-10-15 15:08:16,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 15:08:16,048 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2018-10-15 15:08:16,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:16,056 INFO L225 Difference]: With dead ends: 1631 [2018-10-15 15:08:16,056 INFO L226 Difference]: Without dead ends: 1595 [2018-10-15 15:08:16,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2018-10-15 15:08:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2018-10-15 15:08:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1047. [2018-10-15 15:08:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2018-10-15 15:08:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1096 transitions. [2018-10-15 15:08:16,078 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1096 transitions. Word has length 244 [2018-10-15 15:08:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:16,079 INFO L481 AbstractCegarLoop]: Abstraction has 1047 states and 1096 transitions. [2018-10-15 15:08:16,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-15 15:08:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1096 transitions. [2018-10-15 15:08:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-15 15:08:16,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:08:16,084 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:08:16,085 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:08:16,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:08:16,085 INFO L82 PathProgramCache]: Analyzing trace with hash 288143051, now seen corresponding path program 1 times [2018-10-15 15:08:16,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:08:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:08:16,225 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:08:16,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:08:16,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:08:16,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:08:16,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:08:16,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:08:16,226 INFO L87 Difference]: Start difference. First operand 1047 states and 1096 transitions. Second operand 3 states. [2018-10-15 15:08:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:08:16,296 INFO L93 Difference]: Finished difference Result 240 states and 239 transitions. [2018-10-15 15:08:16,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:08:16,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2018-10-15 15:08:16,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:08:16,297 INFO L225 Difference]: With dead ends: 240 [2018-10-15 15:08:16,297 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:08:16,298 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 15:08:16,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:08:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:08:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:08:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:08:16,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 245 [2018-10-15 15:08:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:08:16,299 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:08:16,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:08:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:08:16,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:08:16,305 INFO L202 PluginConnector]: Adding new model pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:08:16 BoogieIcfgContainer [2018-10-15 15:08:16,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:08:16,306 INFO L168 Benchmark]: Toolchain (without parser) took 7965.04 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.2 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 303.6 MB). Peak memory consumption was 351.8 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:16,308 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 15:08:16,308 INFO L168 Benchmark]: Boogie Preprocessor took 93.41 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 15:08:16,310 INFO L168 Benchmark]: RCFGBuilder took 1015.23 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 15:08:16,311 INFO L168 Benchmark]: TraceAbstraction took 6851.19 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.2 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 261.3 MB). Peak memory consumption was 309.5 MB. Max. memory is 7.1 GB. [2018-10-15 15:08:16,316 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 0.19 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 93.41 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 1015.23 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 6851.19 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.2 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 261.3 MB). Peak memory consumption was 309.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 370]: 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, 206 locations, 1 error locations. SAFE Result, 6.7s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2010 SDtfs, 1561 SDslu, 3233 SDs, 0 SdLazy, 407 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1780occurred in iteration=6, 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: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1722 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1579 NumberOfCodeBlocks, 1579 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1571 ConstructedInterpolants, 0 QuantifiedInterpolants, 1143950 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 73/87 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_overflow.ufo.UNBOUNDED.pals.c_19.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-08-16-337.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-08-16-337.csv Received shutdown request...