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_37.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:53:36,688 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:53:36,690 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:53:36,707 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:53:36,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:53:36,709 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:53:36,710 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:53:36,713 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:53:36,714 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:53:36,724 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:53:36,725 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-12 20:53:36,760 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 20:53:36,777 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:53:36,777 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:53:36,779 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:53:36,779 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:53:36,779 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:53:36,780 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:53:36,781 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:53:36,781 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:53:36,781 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:53:36,781 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:53:36,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:53:36,782 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:53:36,782 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:53:36,783 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:53:36,783 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:53:36,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:53:36,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:53:36,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:53:36,866 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:53:36,867 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:53:36,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl [2018-10-12 20:53:36,868 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl' [2018-10-12 20:53:36,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:53:36,944 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:53:36,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:53:36,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:53:36,945 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:53:36,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:36,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:53:37,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:53:37,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:53:37,037 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:53:37,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (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 20:53:37,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:53:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:53:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:53:37,972 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:53:37,973 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:37 BoogieIcfgContainer [2018-10-12 20:53:37,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:53:37,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:53:37,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:53:37,977 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:53:37,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:36" (1/2) ... [2018-10-12 20:53:37,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36246c7f and model type alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:37, skipping insertion in model container [2018-10-12 20:53:37,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:37" (2/2) ... [2018-10-12 20:53:37,981 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl [2018-10-12 20:53:37,991 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:53:37,999 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:53:38,013 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:53:38,040 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:53:38,041 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:53:38,041 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:53:38,041 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:53:38,041 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:53:38,042 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:53:38,042 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:53:38,042 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:53:38,042 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:53:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2018-10-12 20:53:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-12 20:53:38,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:38,076 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:38,077 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:38,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:38,083 INFO L82 PathProgramCache]: Analyzing trace with hash 179709574, now seen corresponding path program 1 times [2018-10-12 20:53:38,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:38,619 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 20:53:38,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:38,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:53:38,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:53:38,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:53:38,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:53:38,648 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 9 states. [2018-10-12 20:53:39,464 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-12 20:53:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:40,482 INFO L93 Difference]: Finished difference Result 292 states and 297 transitions. [2018-10-12 20:53:40,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:53:40,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2018-10-12 20:53:40,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:40,502 INFO L225 Difference]: With dead ends: 292 [2018-10-12 20:53:40,502 INFO L226 Difference]: Without dead ends: 292 [2018-10-12 20:53:40,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-12 20:53:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-12 20:53:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 187. [2018-10-12 20:53:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-12 20:53:40,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2018-10-12 20:53:40,561 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 48 [2018-10-12 20:53:40,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:40,562 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2018-10-12 20:53:40,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:53:40,563 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2018-10-12 20:53:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-12 20:53:40,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:40,567 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] [2018-10-12 20:53:40,567 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:40,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:40,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1229667807, now seen corresponding path program 1 times [2018-10-12 20:53:40,569 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:40,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:40,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-12 20:53:40,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 20:53:40,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 20:53:40,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-12 20:53:40,798 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand 11 states. [2018-10-12 20:53:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:41,787 INFO L93 Difference]: Finished difference Result 358 states and 363 transitions. [2018-10-12 20:53:41,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 20:53:41,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2018-10-12 20:53:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:41,792 INFO L225 Difference]: With dead ends: 358 [2018-10-12 20:53:41,793 INFO L226 Difference]: Without dead ends: 347 [2018-10-12 20:53:41,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-12 20:53:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-12 20:53:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 210. [2018-10-12 20:53:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-10-12 20:53:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 215 transitions. [2018-10-12 20:53:41,814 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 215 transitions. Word has length 75 [2018-10-12 20:53:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:41,814 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 215 transitions. [2018-10-12 20:53:41,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 20:53:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 215 transitions. [2018-10-12 20:53:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-12 20:53:41,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:41,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:41,819 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:41,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:41,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1321732550, now seen corresponding path program 1 times [2018-10-12 20:53:41,821 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:42,177 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 20:53:42,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:42,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-12 20:53:42,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 20:53:42,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 20:53:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-12 20:53:42,179 INFO L87 Difference]: Start difference. First operand 210 states and 215 transitions. Second operand 11 states. [2018-10-12 20:53:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:43,731 INFO L93 Difference]: Finished difference Result 488 states and 495 transitions. [2018-10-12 20:53:43,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-12 20:53:43,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2018-10-12 20:53:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:43,736 INFO L225 Difference]: With dead ends: 488 [2018-10-12 20:53:43,736 INFO L226 Difference]: Without dead ends: 483 [2018-10-12 20:53:43,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2018-10-12 20:53:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-10-12 20:53:43,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 219. [2018-10-12 20:53:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-12 20:53:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 224 transitions. [2018-10-12 20:53:43,754 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 224 transitions. Word has length 91 [2018-10-12 20:53:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:43,755 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 224 transitions. [2018-10-12 20:53:43,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 20:53:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 224 transitions. [2018-10-12 20:53:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-12 20:53:43,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:43,760 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:43,760 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:43,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:43,761 INFO L82 PathProgramCache]: Analyzing trace with hash -364173713, now seen corresponding path program 1 times [2018-10-12 20:53:43,762 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-12 20:53:44,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:44,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:53:44,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:53:44,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:53:44,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:53:44,027 INFO L87 Difference]: Start difference. First operand 219 states and 224 transitions. Second operand 9 states. [2018-10-12 20:53:44,348 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-12 20:53:44,474 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-10-12 20:53:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:44,687 INFO L93 Difference]: Finished difference Result 292 states and 295 transitions. [2018-10-12 20:53:44,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-12 20:53:44,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2018-10-12 20:53:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:44,690 INFO L225 Difference]: With dead ends: 292 [2018-10-12 20:53:44,690 INFO L226 Difference]: Without dead ends: 260 [2018-10-12 20:53:44,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:53:44,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-10-12 20:53:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 219. [2018-10-12 20:53:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-12 20:53:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 223 transitions. [2018-10-12 20:53:44,720 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 223 transitions. Word has length 107 [2018-10-12 20:53:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:44,720 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 223 transitions. [2018-10-12 20:53:44,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:53:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 223 transitions. [2018-10-12 20:53:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-12 20:53:44,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:44,733 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, 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] [2018-10-12 20:53:44,735 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:44,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:44,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1685791226, now seen corresponding path program 2 times [2018-10-12 20:53:44,740 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:44,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:44,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:53:44,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:53:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:53:44,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:53:44,856 INFO L87 Difference]: Start difference. First operand 219 states and 223 transitions. Second operand 3 states. [2018-10-12 20:53:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:44,871 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-12 20:53:44,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:53:44,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2018-10-12 20:53:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:44,874 INFO L225 Difference]: With dead ends: 155 [2018-10-12 20:53:44,874 INFO L226 Difference]: Without dead ends: 151 [2018-10-12 20:53:44,874 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 20:53:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-12 20:53:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-12 20:53:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-12 20:53:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-12 20:53:44,879 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 134 [2018-10-12 20:53:44,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:44,879 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-12 20:53:44,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:53:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-12 20:53:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-12 20:53:44,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:44,882 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:44,882 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:44,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:44,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1262941755, now seen corresponding path program 1 times [2018-10-12 20:53:44,883 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:46,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:46,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-12 20:53:46,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-12 20:53:46,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-12 20:53:46,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2018-10-12 20:53:46,353 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 29 states. [2018-10-12 20:53:48,113 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-12 20:53:48,366 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-12 20:53:48,699 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-12 20:53:48,995 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-12 20:53:49,345 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2018-10-12 20:53:51,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:51,479 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-12 20:53:51,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-12 20:53:51,481 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 150 [2018-10-12 20:53:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:51,483 INFO L225 Difference]: With dead ends: 203 [2018-10-12 20:53:51,483 INFO L226 Difference]: Without dead ends: 203 [2018-10-12 20:53:51,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=540, Invalid=3120, Unknown=0, NotChecked=0, Total=3660 [2018-10-12 20:53:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-12 20:53:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 178. [2018-10-12 20:53:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-12 20:53:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2018-10-12 20:53:51,490 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 150 [2018-10-12 20:53:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:51,491 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2018-10-12 20:53:51,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-12 20:53:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2018-10-12 20:53:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-12 20:53:51,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:51,494 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:51,494 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:51,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:51,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2004567306, now seen corresponding path program 2 times [2018-10-12 20:53:51,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:52,225 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-12 20:53:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:52,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:52,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-12 20:53:52,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-12 20:53:52,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-12 20:53:52,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-12 20:53:52,795 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand 31 states. [2018-10-12 20:53:54,947 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-10-12 20:53:55,378 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2018-10-12 20:53:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:56,905 INFO L93 Difference]: Finished difference Result 168 states and 167 transitions. [2018-10-12 20:53:56,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-12 20:53:56,906 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 177 [2018-10-12 20:53:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:56,907 INFO L225 Difference]: With dead ends: 168 [2018-10-12 20:53:56,907 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:53:56,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=733, Invalid=3689, Unknown=0, NotChecked=0, Total=4422 [2018-10-12 20:53:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:53:56,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:53:56,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:53:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:53:56,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 177 [2018-10-12 20:53:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:56,909 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:53:56,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-12 20:53:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:53:56,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:53:56,915 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:53:56 BoogieIcfgContainer [2018-10-12 20:53:56,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:53:56,916 INFO L168 Benchmark]: Toolchain (without parser) took 19973.25 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 218.1 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 39.4 MB). Peak memory consumption was 257.5 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:56,918 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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. [2018-10-12 20:53:56,918 INFO L168 Benchmark]: Boogie Preprocessor took 91.40 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. [2018-10-12 20:53:56,919 INFO L168 Benchmark]: RCFGBuilder took 936.08 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:56,920 INFO L168 Benchmark]: TraceAbstraction took 18941.73 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 218.1 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -808.0 kB). Peak memory consumption was 217.3 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:56,924 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.40 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 936.08 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18941.73 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 218.1 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -808.0 kB). Peak memory consumption was 217.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 242]: 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, 139 locations, 1 error locations. SAFE Result, 18.8s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 14.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 840 SDtfs, 5682 SDslu, 5626 SDs, 0 SdLazy, 4188 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 572 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 775 ConstructedInterpolants, 0 QuantifiedInterpolants, 925594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 82/122 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_37.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_20-53-56-935.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_37.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_20-53-56-935.csv Received shutdown request...