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-b8f97f7-m [2018-10-10 15:26:23,750 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:26:23,752 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:26:23,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:26:23,768 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:26:23,769 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:26:23,770 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:26:23,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:26:23,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:26:23,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:26:23,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:26:23,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:26:23,777 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:26:23,778 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:26:23,779 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:26:23,780 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:26:23,781 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:26:23,783 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:26:23,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:26:23,786 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:26:23,787 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:26:23,789 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:26:23,794 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:26:23,813 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:26:23,834 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:26:23,834 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:26:23,838 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:26:23,839 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:26:23,839 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:26:23,839 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:26:23,840 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:26:23,840 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:26:23,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:26:23,840 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:26:23,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:26:23,841 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:26:23,841 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:26:23,842 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:26:23,842 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:26:23,891 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:26:23,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:26:23,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:26:23,917 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:26:23,918 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:26:23,919 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl [2018-10-10 15:26:23,919 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl' [2018-10-10 15:26:24,016 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:26:24,018 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:26:24,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:26:24,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:26:24,019 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:26:24,048 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 10.10 03:26:24" (1/1) ... [2018-10-10 15:26:24,050 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 10.10 03:26:24" (1/1) ... [2018-10-10 15:26:24,080 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 10.10 03:26:24" (1/1) ... [2018-10-10 15:26:24,080 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 10.10 03:26:24" (1/1) ... [2018-10-10 15:26:24,099 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 10.10 03:26:24" (1/1) ... [2018-10-10 15:26:24,103 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 10.10 03:26:24" (1/1) ... [2018-10-10 15:26:24,109 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 10.10 03:26:24" (1/1) ... [2018-10-10 15:26:24,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:26:24,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:26:24,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:26:24,117 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:26:24,118 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 10.10 03:26:24" (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 [2018-10-10 15:26:24,198 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:26:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:26:24,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:26:25,007 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:26:25,007 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 10.10 03:26:25 BoogieIcfgContainer [2018-10-10 15:26:25,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:26:25,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:26:25,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:26:25,012 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:26:25,012 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 10.10 03:26:24" (1/2) ... [2018-10-10 15:26:25,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f4793d and model type alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:26:25, skipping insertion in model container [2018-10-10 15:26:25,013 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 10.10 03:26:25" (2/2) ... [2018-10-10 15:26:25,015 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl [2018-10-10 15:26:25,025 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:26:25,034 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:26:25,052 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:26:25,081 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:26:25,082 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:26:25,082 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:26:25,083 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:26:25,083 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:26:25,083 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:26:25,083 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:26:25,083 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:26:25,083 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:26:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2018-10-10 15:26:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-10 15:26:25,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:25,116 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] [2018-10-10 15:26:25,118 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:25,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:25,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1179044582, now seen corresponding path program 1 times [2018-10-10 15:26:25,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:25,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:25,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-10 15:26:25,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-10 15:26:25,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-10 15:26:25,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:26:25,508 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 7 states. [2018-10-10 15:26:26,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:26,998 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2018-10-10 15:26:26,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:26:27,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-10 15:26:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:27,017 INFO L225 Difference]: With dead ends: 220 [2018-10-10 15:26:27,017 INFO L226 Difference]: Without dead ends: 220 [2018-10-10 15:26:27,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-10 15:26:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-10 15:26:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2018-10-10 15:26:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-10 15:26:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2018-10-10 15:26:27,076 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 36 [2018-10-10 15:26:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:27,077 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2018-10-10 15:26:27,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-10 15:26:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2018-10-10 15:26:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-10 15:26:27,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:27,081 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] [2018-10-10 15:26:27,082 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:27,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:27,083 INFO L82 PathProgramCache]: Analyzing trace with hash -188082643, now seen corresponding path program 1 times [2018-10-10 15:26:27,084 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:27,424 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-10-10 15:26:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:27,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:27,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:26:27,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:26:27,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:26:27,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:26:27,521 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 9 states. [2018-10-10 15:26:28,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:28,424 INFO L93 Difference]: Finished difference Result 289 states and 294 transitions. [2018-10-10 15:26:28,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:26:28,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2018-10-10 15:26:28,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:28,430 INFO L225 Difference]: With dead ends: 289 [2018-10-10 15:26:28,430 INFO L226 Difference]: Without dead ends: 257 [2018-10-10 15:26:28,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-10 15:26:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-10 15:26:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 119. [2018-10-10 15:26:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-10 15:26:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-10 15:26:28,462 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 68 [2018-10-10 15:26:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:28,462 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-10 15:26:28,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:26:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-10 15:26:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 15:26:28,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:28,467 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] [2018-10-10 15:26:28,468 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:28,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:28,469 INFO L82 PathProgramCache]: Analyzing trace with hash -708069330, now seen corresponding path program 1 times [2018-10-10 15:26:28,470 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:28,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:28,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:28,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:28,537 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 3 states. [2018-10-10 15:26:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:28,606 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2018-10-10 15:26:28,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:28,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2018-10-10 15:26:28,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:28,609 INFO L225 Difference]: With dead ends: 187 [2018-10-10 15:26:28,609 INFO L226 Difference]: Without dead ends: 187 [2018-10-10 15:26:28,610 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 [2018-10-10 15:26:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-10 15:26:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 153. [2018-10-10 15:26:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-10 15:26:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2018-10-10 15:26:28,621 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 79 [2018-10-10 15:26:28,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:28,621 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2018-10-10 15:26:28,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2018-10-10 15:26:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-10 15:26:28,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:28,625 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] [2018-10-10 15:26:28,625 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:28,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:28,626 INFO L82 PathProgramCache]: Analyzing trace with hash 212937038, now seen corresponding path program 1 times [2018-10-10 15:26:28,627 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:28,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:28,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-10 15:26:28,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 15:26:28,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 15:26:28,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-10 15:26:28,807 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand 8 states. [2018-10-10 15:26:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:29,488 INFO L93 Difference]: Finished difference Result 353 states and 358 transitions. [2018-10-10 15:26:29,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:26:29,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-10-10 15:26:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:29,491 INFO L225 Difference]: With dead ends: 353 [2018-10-10 15:26:29,491 INFO L226 Difference]: Without dead ends: 353 [2018-10-10 15:26:29,496 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 [2018-10-10 15:26:29,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-10-10 15:26:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 209. [2018-10-10 15:26:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-10 15:26:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2018-10-10 15:26:29,524 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 79 [2018-10-10 15:26:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:29,525 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2018-10-10 15:26:29,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 15:26:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2018-10-10 15:26:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-10 15:26:29,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:29,533 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] [2018-10-10 15:26:29,533 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:29,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:29,537 INFO L82 PathProgramCache]: Analyzing trace with hash -624674207, now seen corresponding path program 1 times [2018-10-10 15:26:29,538 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:30,257 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:30,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-10 15:26:30,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-10 15:26:30,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-10 15:26:30,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-10-10 15:26:30,258 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand 20 states. [2018-10-10 15:26:31,779 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2018-10-10 15:26:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:33,673 INFO L93 Difference]: Finished difference Result 430 states and 435 transitions. [2018-10-10 15:26:33,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-10 15:26:33,674 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 111 [2018-10-10 15:26:33,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:33,677 INFO L225 Difference]: With dead ends: 430 [2018-10-10 15:26:33,677 INFO L226 Difference]: Without dead ends: 430 [2018-10-10 15:26:33,679 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 [2018-10-10 15:26:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-10 15:26:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 241. [2018-10-10 15:26:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-10 15:26:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2018-10-10 15:26:33,690 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 111 [2018-10-10 15:26:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:33,691 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2018-10-10 15:26:33,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-10 15:26:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2018-10-10 15:26:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-10 15:26:33,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:33,694 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] [2018-10-10 15:26:33,694 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:33,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:33,694 INFO L82 PathProgramCache]: Analyzing trace with hash -622285958, now seen corresponding path program 1 times [2018-10-10 15:26:33,695 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-10 15:26:33,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:33,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-10 15:26:33,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 15:26:33,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 15:26:33,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-10 15:26:33,924 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand 10 states. [2018-10-10 15:26:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:34,496 INFO L93 Difference]: Finished difference Result 354 states and 359 transitions. [2018-10-10 15:26:34,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-10 15:26:34,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2018-10-10 15:26:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:34,501 INFO L225 Difference]: With dead ends: 354 [2018-10-10 15:26:34,501 INFO L226 Difference]: Without dead ends: 354 [2018-10-10 15:26:34,501 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 [2018-10-10 15:26:34,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-10 15:26:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 241. [2018-10-10 15:26:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-10 15:26:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2018-10-10 15:26:34,509 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 122 [2018-10-10 15:26:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:34,509 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2018-10-10 15:26:34,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 15:26:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2018-10-10 15:26:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-10 15:26:34,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:34,512 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] [2018-10-10 15:26:34,513 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:34,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1196834676, now seen corresponding path program 2 times [2018-10-10 15:26:34,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:26:34,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:26:34,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:26:34,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:26:34,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:26:34,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:26:34,629 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand 3 states. [2018-10-10 15:26:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:34,656 INFO L93 Difference]: Finished difference Result 263 states and 265 transitions. [2018-10-10 15:26:34,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:26:34,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-10-10 15:26:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:34,657 INFO L225 Difference]: With dead ends: 263 [2018-10-10 15:26:34,657 INFO L226 Difference]: Without dead ends: 209 [2018-10-10 15:26:34,658 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 [2018-10-10 15:26:34,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-10 15:26:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-10 15:26:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-10 15:26:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-10-10 15:26:34,663 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 143 [2018-10-10 15:26:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:34,663 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-10-10 15:26:34,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:26:34,663 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-10-10 15:26:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-10 15:26:34,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:34,665 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] [2018-10-10 15:26:34,666 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:34,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:34,666 INFO L82 PathProgramCache]: Analyzing trace with hash 998771853, now seen corresponding path program 1 times [2018-10-10 15:26:34,667 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:36,189 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:36,189 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:36,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-10 15:26:36,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-10 15:26:36,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-10 15:26:36,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2018-10-10 15:26:36,191 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 28 states. [2018-10-10 15:26:40,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:40,075 INFO L93 Difference]: Finished difference Result 310 states and 311 transitions. [2018-10-10 15:26:40,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-10 15:26:40,076 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2018-10-10 15:26:40,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:40,078 INFO L225 Difference]: With dead ends: 310 [2018-10-10 15:26:40,078 INFO L226 Difference]: Without dead ends: 265 [2018-10-10 15:26:40,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=573, Invalid=3983, Unknown=0, NotChecked=0, Total=4556 [2018-10-10 15:26:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-10 15:26:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 241. [2018-10-10 15:26:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-10 15:26:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-10-10 15:26:40,086 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 154 [2018-10-10 15:26:40,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:40,086 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-10-10 15:26:40,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-10 15:26:40,086 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-10-10 15:26:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-10 15:26:40,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:40,089 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] [2018-10-10 15:26:40,089 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:40,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:40,089 INFO L82 PathProgramCache]: Analyzing trace with hash -439351295, now seen corresponding path program 2 times [2018-10-10 15:26:40,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:41,454 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-10 15:26:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:43,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:43,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-10 15:26:43,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-10 15:26:43,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-10 15:26:43,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2320, Unknown=0, NotChecked=0, Total=2450 [2018-10-10 15:26:43,972 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 50 states. [2018-10-10 15:26:46,370 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2018-10-10 15:26:46,596 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2018-10-10 15:26:46,941 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2018-10-10 15:26:47,217 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2018-10-10 15:26:47,509 WARN L178 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2018-10-10 15:26:47,663 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-10-10 15:26:47,891 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-10-10 15:26:48,450 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2018-10-10 15:26:49,617 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-10 15:26:50,167 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-10 15:26:50,364 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2018-10-10 15:26:50,679 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-10 15:26:50,913 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2018-10-10 15:26:51,135 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-10 15:26:51,526 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:26:51,848 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-10 15:26:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:26:54,606 INFO L93 Difference]: Finished difference Result 344 states and 345 transitions. [2018-10-10 15:26:54,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-10 15:26:54,607 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 197 [2018-10-10 15:26:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:26:54,609 INFO L225 Difference]: With dead ends: 344 [2018-10-10 15:26:54,609 INFO L226 Difference]: Without dead ends: 299 [2018-10-10 15:26:54,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2844 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1026, Invalid=10746, Unknown=0, NotChecked=0, Total=11772 [2018-10-10 15:26:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-10 15:26:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 284. [2018-10-10 15:26:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-10 15:26:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 285 transitions. [2018-10-10 15:26:54,620 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 285 transitions. Word has length 197 [2018-10-10 15:26:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:26:54,621 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 285 transitions. [2018-10-10 15:26:54,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-10 15:26:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 285 transitions. [2018-10-10 15:26:54,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-10 15:26:54,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:26:54,628 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] [2018-10-10 15:26:54,629 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:26:54,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:26:54,629 INFO L82 PathProgramCache]: Analyzing trace with hash -71304467, now seen corresponding path program 3 times [2018-10-10 15:26:54,631 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:26:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:26:55,222 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-10 15:26:56,586 WARN L178 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2018-10-10 15:26:59,131 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-10-10 15:26:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:26:59,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:26:59,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-10 15:26:59,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-10 15:26:59,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-10 15:26:59,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3612, Unknown=0, NotChecked=0, Total=3782 [2018-10-10 15:26:59,789 INFO L87 Difference]: Start difference. First operand 284 states and 285 transitions. Second operand 62 states. [2018-10-10 15:27:02,526 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-10-10 15:27:02,932 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2018-10-10 15:27:03,281 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 61 [2018-10-10 15:27:03,700 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2018-10-10 15:27:04,001 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 71 [2018-10-10 15:27:04,308 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2018-10-10 15:27:04,556 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2018-10-10 15:27:05,432 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2018-10-10 15:27:06,443 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-10-10 15:27:06,637 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-10-10 15:27:06,944 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-10 15:27:07,166 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:27:07,452 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-10 15:27:07,763 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-10 15:27:08,069 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-10 15:27:08,348 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-10 15:27:08,657 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2018-10-10 15:27:08,964 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2018-10-10 15:27:09,415 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2018-10-10 15:27:09,764 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2018-10-10 15:27:09,980 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-10 15:27:10,397 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-10 15:27:10,780 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2018-10-10 15:27:11,023 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-10-10 15:27:11,193 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-10 15:27:12,434 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-10-10 15:27:12,622 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-10 15:27:16,763 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-10 15:27:17,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:17,216 INFO L93 Difference]: Finished difference Result 387 states and 388 transitions. [2018-10-10 15:27:17,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-10 15:27:17,217 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 240 [2018-10-10 15:27:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:17,220 INFO L225 Difference]: With dead ends: 387 [2018-10-10 15:27:17,220 INFO L226 Difference]: Without dead ends: 342 [2018-10-10 15:27:17,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4570 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=1761, Invalid=17979, Unknown=0, NotChecked=0, Total=19740 [2018-10-10 15:27:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-10 15:27:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 327. [2018-10-10 15:27:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-10 15:27:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-10-10 15:27:17,233 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 240 [2018-10-10 15:27:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:17,233 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-10-10 15:27:17,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-10 15:27:17,233 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-10-10 15:27:17,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-10 15:27:17,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:17,237 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] [2018-10-10 15:27:17,238 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:17,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1411981919, now seen corresponding path program 4 times [2018-10-10 15:27:17,239 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:18,184 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:27:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 383 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-10 15:27:22,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:22,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-10 15:27:22,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-10 15:27:22,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-10 15:27:22,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5026, Unknown=0, NotChecked=0, Total=5256 [2018-10-10 15:27:22,780 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 73 states. [2018-10-10 15:27:25,397 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 47 [2018-10-10 15:27:25,772 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 56 [2018-10-10 15:27:26,071 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2018-10-10 15:27:26,465 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 66 [2018-10-10 15:27:26,814 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 70 [2018-10-10 15:27:27,300 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 96 [2018-10-10 15:27:27,637 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2018-10-10 15:27:28,023 WARN L178 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 99 [2018-10-10 15:27:28,435 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 101 [2018-10-10 15:27:29,846 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-10 15:27:30,074 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-10-10 15:27:30,368 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-10 15:27:30,684 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2018-10-10 15:27:30,963 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2018-10-10 15:27:31,222 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-10 15:27:31,485 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2018-10-10 15:27:31,772 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-10 15:27:32,319 WARN L178 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-10 15:27:32,654 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2018-10-10 15:27:32,901 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-10 15:27:33,059 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-10 15:27:33,250 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-10 15:27:33,479 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-10 15:27:34,023 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 102 [2018-10-10 15:27:34,499 WARN L178 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 107 [2018-10-10 15:27:34,909 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-10-10 15:27:37,061 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2018-10-10 15:27:38,476 WARN L178 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2018-10-10 15:27:38,820 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2018-10-10 15:27:39,792 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2018-10-10 15:27:40,189 WARN L178 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2018-10-10 15:27:40,719 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 109 [2018-10-10 15:27:41,153 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-10 15:27:41,546 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2018-10-10 15:27:41,968 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2018-10-10 15:27:42,198 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2018-10-10 15:27:42,445 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2018-10-10 15:27:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:42,492 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-10-10 15:27:42,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-10 15:27:42,493 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 283 [2018-10-10 15:27:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:42,494 INFO L225 Difference]: With dead ends: 325 [2018-10-10 15:27:42,494 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:27:42,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=2063, Invalid=19399, Unknown=0, NotChecked=0, Total=21462 [2018-10-10 15:27:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:27:42,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:27:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:27:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:27:42,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2018-10-10 15:27:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:42,500 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:27:42,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-10 15:27:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:27:42,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:27:42,505 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 10.10 03:27:42 BoogieIcfgContainer [2018-10-10 15:27:42,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:27:42,506 INFO L168 Benchmark]: Toolchain (without parser) took 78489.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 635.4 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 39.3 MB). Peak memory consumption was 674.8 MB. Max. memory is 7.1 GB. [2018-10-10 15:27:42,507 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-10-10 15:27:42,507 INFO L168 Benchmark]: Boogie Preprocessor took 97.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:27:42,508 INFO L168 Benchmark]: RCFGBuilder took 891.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-10 15:27:42,508 INFO L168 Benchmark]: TraceAbstraction took 77496.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 635.4 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 7.6 MB). Peak memory consumption was 643.0 MB. Max. memory is 7.1 GB. [2018-10-10 15:27:42,512 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 0.20 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 97.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 891.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 77496.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 635.4 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 7.6 MB). Peak memory consumption was 643.0 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, 77.4s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 58.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1199 SDtfs, 12278 SDslu, 11935 SDs, 0 SdLazy, 17351 SolverSat, 684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 615 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13727 ImplicationChecksByTransitivity, 53.1s 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, 16.6s 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-0-2018-10-10_15-27-42-522.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-0-2018-10-10_15-27-42-522.csv Received shutdown request...