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/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:53:37,473 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:53:37,475 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:53:37,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:53:37,492 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:53:37,493 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:53:37,494 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:53:37,496 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:53:37,500 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:53:37,501 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:53:37,502 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:53:37,502 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:53:37,503 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:53:37,504 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:53:37,505 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:53:37,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:53:37,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:53:37,509 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:53:37,511 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:53:37,513 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:53:37,514 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:53:37,515 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:53:37,517 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 20:53:37,527 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:53:37,537 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:53:37,537 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:53:37,538 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:53:37,538 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:53:37,538 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:53:37,538 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:53:37,539 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:53:37,539 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:53:37,540 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:53:37,540 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:53:37,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:53:37,540 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:53:37,540 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:53:37,541 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:53:37,541 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:53:37,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:53:37,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:53:37,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:53:37,606 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:53:37,607 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:53:37,608 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl [2018-10-12 20:53:37,608 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl' [2018-10-12 20:53:37,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:53:37,683 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:53:37,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:53:37,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:53:37,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:53:37,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/1) ... [2018-10-12 20:53:37,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/1) ... [2018-10-12 20:53:37,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/1) ... [2018-10-12 20:53:37,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/1) ... [2018-10-12 20:53:37,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/1) ... [2018-10-12 20:53:37,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/1) ... [2018-10-12 20:53:37,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/1) ... [2018-10-12 20:53:37,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:53:37,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:53:37,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:53:37,774 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:53:37,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (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 [2018-10-12 20:53:37,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:53:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:53:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:53:38,686 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:53:38,687 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:38 BoogieIcfgContainer [2018-10-12 20:53:38,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:53:38,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:53:38,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:53:38,692 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:53:38,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:37" (1/2) ... [2018-10-12 20:53:38,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194c2a13 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:38, skipping insertion in model container [2018-10-12 20:53:38,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:38" (2/2) ... [2018-10-12 20:53:38,696 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl [2018-10-12 20:53:38,708 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:53:38,724 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:53:38,747 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:53:38,780 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:53:38,781 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:53:38,782 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:53:38,782 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:53:38,782 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:53:38,782 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:53:38,782 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:53:38,782 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:53:38,783 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:53:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2018-10-12 20:53:38,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-12 20:53:38,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:38,830 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] [2018-10-12 20:53:38,831 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:38,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1179044582, now seen corresponding path program 1 times [2018-10-12 20:53:38,905 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:39,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:39,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-12 20:53:39,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-12 20:53:39,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-12 20:53:39,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-12 20:53:39,273 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 7 states. [2018-10-12 20:53:39,949 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-12 20:53:40,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:40,447 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2018-10-12 20:53:40,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-12 20:53:40,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-12 20:53:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:40,473 INFO L225 Difference]: With dead ends: 220 [2018-10-12 20:53:40,473 INFO L226 Difference]: Without dead ends: 220 [2018-10-12 20:53:40,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:53:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-12 20:53:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2018-10-12 20:53:40,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-12 20:53:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2018-10-12 20:53:40,552 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 36 [2018-10-12 20:53:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:40,553 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2018-10-12 20:53:40,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-12 20:53:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2018-10-12 20:53:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-12 20:53:40,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:40,559 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 20:53:40,559 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:40,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:40,560 INFO L82 PathProgramCache]: Analyzing trace with hash -188082643, now seen corresponding path program 1 times [2018-10-12 20:53:40,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:41,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:41,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:53:41,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:53:41,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:53:41,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:53:41,024 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 9 states. [2018-10-12 20:53:41,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:41,907 INFO L93 Difference]: Finished difference Result 289 states and 294 transitions. [2018-10-12 20:53:41,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-12 20:53:41,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2018-10-12 20:53:41,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:41,911 INFO L225 Difference]: With dead ends: 289 [2018-10-12 20:53:41,911 INFO L226 Difference]: Without dead ends: 257 [2018-10-12 20:53:41,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-12 20:53:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-12 20:53:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 119. [2018-10-12 20:53:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-12 20:53:41,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-12 20:53:41,926 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 68 [2018-10-12 20:53:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:41,927 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-12 20:53:41,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:53:41,927 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-12 20:53:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-12 20:53:41,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:41,930 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 20:53:41,930 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:41,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:41,931 INFO L82 PathProgramCache]: Analyzing trace with hash -708069330, now seen corresponding path program 1 times [2018-10-12 20:53:41,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:42,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:42,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:53:42,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:53:42,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:53:42,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:53:42,012 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 3 states. [2018-10-12 20:53:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:42,063 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2018-10-12 20:53:42,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:53:42,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2018-10-12 20:53:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:42,067 INFO L225 Difference]: With dead ends: 187 [2018-10-12 20:53:42,067 INFO L226 Difference]: Without dead ends: 187 [2018-10-12 20:53:42,067 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 [2018-10-12 20:53:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-12 20:53:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 153. [2018-10-12 20:53:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-12 20:53:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2018-10-12 20:53:42,079 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 79 [2018-10-12 20:53:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:42,079 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2018-10-12 20:53:42,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:53:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2018-10-12 20:53:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-12 20:53:42,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:42,083 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 20:53:42,083 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:42,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 212937038, now seen corresponding path program 1 times [2018-10-12 20:53:42,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:42,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:42,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:42,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-12 20:53:42,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-12 20:53:42,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-12 20:53:42,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-12 20:53:42,231 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand 8 states. [2018-10-12 20:53:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:42,874 INFO L93 Difference]: Finished difference Result 353 states and 358 transitions. [2018-10-12 20:53:42,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:53:42,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-10-12 20:53:42,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:42,877 INFO L225 Difference]: With dead ends: 353 [2018-10-12 20:53:42,878 INFO L226 Difference]: Without dead ends: 353 [2018-10-12 20:53:42,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-12 20:53:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-10-12 20:53:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 209. [2018-10-12 20:53:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-12 20:53:42,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2018-10-12 20:53:42,914 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 79 [2018-10-12 20:53:42,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:42,914 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2018-10-12 20:53:42,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-12 20:53:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2018-10-12 20:53:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-12 20:53:42,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:42,922 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-12 20:53:42,927 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:42,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:42,928 INFO L82 PathProgramCache]: Analyzing trace with hash -624674207, now seen corresponding path program 1 times [2018-10-12 20:53:42,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:43,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:43,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-12 20:53:43,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-12 20:53:43,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-12 20:53:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-10-12 20:53:43,661 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand 20 states. [2018-10-12 20:53:44,643 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-12 20:53:45,099 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2018-10-12 20:53:47,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:47,027 INFO L93 Difference]: Finished difference Result 430 states and 435 transitions. [2018-10-12 20:53:47,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-12 20:53:47,028 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 111 [2018-10-12 20:53:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:47,031 INFO L225 Difference]: With dead ends: 430 [2018-10-12 20:53:47,031 INFO L226 Difference]: Without dead ends: 430 [2018-10-12 20:53:47,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=656, Invalid=2424, Unknown=0, NotChecked=0, Total=3080 [2018-10-12 20:53:47,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-12 20:53:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 241. [2018-10-12 20:53:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-12 20:53:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2018-10-12 20:53:47,044 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 111 [2018-10-12 20:53:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:47,044 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2018-10-12 20:53:47,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-12 20:53:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2018-10-12 20:53:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-12 20:53:47,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:47,047 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:47,048 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:47,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:47,048 INFO L82 PathProgramCache]: Analyzing trace with hash -622285958, now seen corresponding path program 1 times [2018-10-12 20:53:47,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-12 20:53:47,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:47,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-12 20:53:47,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-12 20:53:47,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-12 20:53:47,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-12 20:53:47,284 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand 10 states. [2018-10-12 20:53:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:47,869 INFO L93 Difference]: Finished difference Result 354 states and 359 transitions. [2018-10-12 20:53:47,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-12 20:53:47,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2018-10-12 20:53:47,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:47,873 INFO L225 Difference]: With dead ends: 354 [2018-10-12 20:53:47,873 INFO L226 Difference]: Without dead ends: 354 [2018-10-12 20:53:47,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2018-10-12 20:53:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-12 20:53:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 241. [2018-10-12 20:53:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-12 20:53:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2018-10-12 20:53:47,882 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 122 [2018-10-12 20:53:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:47,882 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2018-10-12 20:53:47,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-12 20:53:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2018-10-12 20:53:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-12 20:53:47,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:47,886 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:47,886 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:47,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1196834676, now seen corresponding path program 2 times [2018-10-12 20:53:47,887 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:53:47,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:47,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:53:47,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:53:47,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:53:47,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:53:47,993 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand 3 states. [2018-10-12 20:53:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:48,057 INFO L93 Difference]: Finished difference Result 263 states and 265 transitions. [2018-10-12 20:53:48,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:53:48,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-10-12 20:53:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:48,061 INFO L225 Difference]: With dead ends: 263 [2018-10-12 20:53:48,061 INFO L226 Difference]: Without dead ends: 209 [2018-10-12 20:53:48,062 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 [2018-10-12 20:53:48,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-12 20:53:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-12 20:53:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-12 20:53:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-10-12 20:53:48,067 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 143 [2018-10-12 20:53:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:48,068 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-10-12 20:53:48,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:53:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-10-12 20:53:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-12 20:53:48,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:48,070 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:48,070 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:48,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash 998771853, now seen corresponding path program 1 times [2018-10-12 20:53:48,072 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:49,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:49,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-12 20:53:49,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-12 20:53:49,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-12 20:53:49,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2018-10-12 20:53:49,060 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 28 states. [2018-10-12 20:53:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:53,230 INFO L93 Difference]: Finished difference Result 310 states and 311 transitions. [2018-10-12 20:53:53,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-12 20:53:53,233 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2018-10-12 20:53:53,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:53,234 INFO L225 Difference]: With dead ends: 310 [2018-10-12 20:53:53,234 INFO L226 Difference]: Without dead ends: 265 [2018-10-12 20:53:53,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=573, Invalid=3983, Unknown=0, NotChecked=0, Total=4556 [2018-10-12 20:53:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-12 20:53:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 241. [2018-10-12 20:53:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-12 20:53:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-10-12 20:53:53,241 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 154 [2018-10-12 20:53:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:53,242 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-10-12 20:53:53,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-12 20:53:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-10-12 20:53:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-12 20:53:53,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:53,244 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-12 20:53:53,245 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:53,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash -439351295, now seen corresponding path program 2 times [2018-10-12 20:53:53,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:54,194 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:53:55,177 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-12 20:53:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:57,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:57,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-12 20:53:57,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-12 20:53:57,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-12 20:53:57,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2320, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 20:53:57,686 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 50 states. [2018-10-12 20:54:01,027 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2018-10-12 20:54:01,235 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2018-10-12 20:54:01,565 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2018-10-12 20:54:01,833 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2018-10-12 20:54:02,103 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2018-10-12 20:54:02,927 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2018-10-12 20:54:04,114 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-12 20:54:04,714 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-12 20:54:04,949 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2018-10-12 20:54:05,249 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-12 20:54:05,489 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2018-10-12 20:54:05,655 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-12 20:54:06,307 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-12 20:54:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:08,985 INFO L93 Difference]: Finished difference Result 344 states and 345 transitions. [2018-10-12 20:54:08,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-12 20:54:08,986 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 197 [2018-10-12 20:54:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:08,988 INFO L225 Difference]: With dead ends: 344 [2018-10-12 20:54:08,988 INFO L226 Difference]: Without dead ends: 299 [2018-10-12 20:54:08,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2844 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1026, Invalid=10746, Unknown=0, NotChecked=0, Total=11772 [2018-10-12 20:54:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-12 20:54:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 284. [2018-10-12 20:54:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-12 20:54:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 285 transitions. [2018-10-12 20:54:08,997 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 285 transitions. Word has length 197 [2018-10-12 20:54:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:08,997 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 285 transitions. [2018-10-12 20:54:08,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-12 20:54:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 285 transitions. [2018-10-12 20:54:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-12 20:54:09,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:09,000 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-10-12 20:54:09,001 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:09,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:09,001 INFO L82 PathProgramCache]: Analyzing trace with hash -71304467, now seen corresponding path program 3 times [2018-10-12 20:54:09,002 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:10,749 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2018-10-12 20:54:13,214 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-10-12 20:54:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:13,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:13,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-12 20:54:13,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-12 20:54:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-12 20:54:13,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3612, Unknown=0, NotChecked=0, Total=3782 [2018-10-12 20:54:13,820 INFO L87 Difference]: Start difference. First operand 284 states and 285 transitions. Second operand 62 states. [2018-10-12 20:54:16,653 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-10-12 20:54:17,047 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2018-10-12 20:54:17,375 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 61 [2018-10-12 20:54:17,803 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2018-10-12 20:54:18,104 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 71 [2018-10-12 20:54:18,428 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2018-10-12 20:54:18,683 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2018-10-12 20:54:19,328 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2018-10-12 20:54:20,438 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-10-12 20:54:20,869 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-12 20:54:21,091 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 20:54:21,359 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-12 20:54:21,674 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-12 20:54:22,011 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-12 20:54:22,290 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-12 20:54:22,576 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2018-10-12 20:54:22,902 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2018-10-12 20:54:23,362 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2018-10-12 20:54:23,706 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2018-10-12 20:54:23,929 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-12 20:54:24,093 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2018-10-12 20:54:24,355 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-12 20:54:24,729 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2018-10-12 20:54:24,977 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-10-12 20:54:25,178 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-12 20:54:26,152 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2018-10-12 20:54:26,372 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-10-12 20:54:26,561 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-12 20:54:30,433 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-12 20:54:30,629 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-12 20:54:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:30,987 INFO L93 Difference]: Finished difference Result 387 states and 388 transitions. [2018-10-12 20:54:30,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-12 20:54:30,987 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 240 [2018-10-12 20:54:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:30,989 INFO L225 Difference]: With dead ends: 387 [2018-10-12 20:54:30,990 INFO L226 Difference]: Without dead ends: 342 [2018-10-12 20:54:30,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4570 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1761, Invalid=17979, Unknown=0, NotChecked=0, Total=19740 [2018-10-12 20:54:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-12 20:54:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 327. [2018-10-12 20:54:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-12 20:54:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-10-12 20:54:31,001 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 240 [2018-10-12 20:54:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:31,001 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-10-12 20:54:31,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-12 20:54:31,002 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-10-12 20:54:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-12 20:54:31,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:31,006 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-12 20:54:31,006 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:31,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1411981919, now seen corresponding path program 4 times [2018-10-12 20:54:31,007 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 383 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-12 20:54:36,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:36,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-12 20:54:36,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-12 20:54:36,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-12 20:54:36,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5026, Unknown=0, NotChecked=0, Total=5256 [2018-10-12 20:54:36,256 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 73 states. [2018-10-12 20:54:38,846 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 47 [2018-10-12 20:54:39,209 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 56 [2018-10-12 20:54:39,503 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2018-10-12 20:54:39,899 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 66 [2018-10-12 20:54:40,247 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 70 [2018-10-12 20:54:40,735 WARN L178 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 96 [2018-10-12 20:54:41,076 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2018-10-12 20:54:41,464 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 99 [2018-10-12 20:54:41,874 WARN L178 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 101 [2018-10-12 20:54:43,307 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-12 20:54:43,534 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-10-12 20:54:43,814 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-12 20:54:44,126 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2018-10-12 20:54:44,397 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2018-10-12 20:54:44,648 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-12 20:54:44,918 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2018-10-12 20:54:45,203 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-12 20:54:45,691 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-12 20:54:46,065 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2018-10-12 20:54:46,302 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:54:46,464 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-12 20:54:46,661 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-12 20:54:46,898 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-12 20:54:47,476 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 102 [2018-10-12 20:54:47,954 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 107 [2018-10-12 20:54:48,337 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-10-12 20:54:50,488 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2018-10-12 20:54:51,778 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2018-10-12 20:54:52,121 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2018-10-12 20:54:53,062 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2018-10-12 20:54:53,445 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2018-10-12 20:54:53,958 WARN L178 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 109 [2018-10-12 20:54:54,389 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-12 20:54:54,767 WARN L178 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2018-10-12 20:54:55,180 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2018-10-12 20:54:55,387 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2018-10-12 20:54:55,556 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2018-10-12 20:54:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:55,590 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-10-12 20:54:55,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-12 20:54:55,591 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 283 [2018-10-12 20:54:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:55,592 INFO L225 Difference]: With dead ends: 325 [2018-10-12 20:54:55,592 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:54:55,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=2063, Invalid=19399, Unknown=0, NotChecked=0, Total=21462 [2018-10-12 20:54:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:54:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:54:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:54:55,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:54:55,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2018-10-12 20:54:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:55,599 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:54:55,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-12 20:54:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:54:55,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:54:55,605 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:54:55 BoogieIcfgContainer [2018-10-12 20:54:55,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:54:55,606 INFO L168 Benchmark]: Toolchain (without parser) took 77923.76 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 620.8 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 20.2 MB). Peak memory consumption was 640.9 MB. Max. memory is 7.1 GB. [2018-10-12 20:54:55,607 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:54:55,607 INFO L168 Benchmark]: Boogie Preprocessor took 88.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:54:55,608 INFO L168 Benchmark]: RCFGBuilder took 914.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-10-12 20:54:55,609 INFO L168 Benchmark]: TraceAbstraction took 76916.23 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 620.8 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -11.5 MB). Peak memory consumption was 609.2 MB. Max. memory is 7.1 GB. [2018-10-12 20:54:55,612 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 914.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 76916.23 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 620.8 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -11.5 MB). Peak memory consumption was 609.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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, 119 locations, 1 error locations. SAFE Result, 76.8s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 58.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1199 SDtfs, 12278 SDslu, 11935 SDs, 0 SdLazy, 17351 SolverSat, 684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 615 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13727 ImplicationChecksByTransitivity, 52.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=327occurred in iteration=10, 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, 11 MinimizatonAttempts, 771 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 1512 NumberOfCodeBlocks, 1512 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1501 ConstructedInterpolants, 0 QuantifiedInterpolants, 4376652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 59/865 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/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_20-54-55-622.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_20-54-55-622.csv Received shutdown request...