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/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:25:57,702 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:25:57,705 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:25:57,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:25:57,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:25:57,723 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:25:57,724 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:25:57,726 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:25:57,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:25:57,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:25:57,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:25:57,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:25:57,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:25:57,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:25:57,732 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:25:57,733 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:25:57,734 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:25:57,735 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:25:57,737 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:25:57,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:25:57,743 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:25:57,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:25:57,750 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-14 16:25:57,750 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-14 16:25:57,750 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-14 16:25:57,751 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-14 16:25:57,756 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-14 16:25:57,756 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-14 16:25:57,757 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-14 16:25:57,761 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-14 16:25:57,761 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-14 16:25:57,762 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-14 16:25:57,767 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:25:57,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:25:57,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:25:57,785 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:25:57,785 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:25:57,785 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:25:57,785 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:25:57,786 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:25:57,786 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:25:57,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:25:57,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:25:57,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:25:57,787 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:25:57,787 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:25:57,788 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:25:57,788 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:25:57,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:25:57,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:25:57,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:25:57,875 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:25:57,876 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:25:57,877 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl [2018-10-14 16:25:57,877 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl' [2018-10-14 16:25:57,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:25:57,935 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:25:57,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:25:57,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:25:57,936 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:25:57,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/1) ... [2018-10-14 16:25:57,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/1) ... [2018-10-14 16:25:57,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/1) ... [2018-10-14 16:25:57,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/1) ... [2018-10-14 16:25:57,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/1) ... [2018-10-14 16:25:57,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/1) ... [2018-10-14 16:25:57,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/1) ... [2018-10-14 16:25:57,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:25:57,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:25:57,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:25:57,984 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:25:57,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (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 [2018-10-14 16:25:58,046 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:25:58,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:25:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:25:58,593 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:25:58,594 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:25:58 BoogieIcfgContainer [2018-10-14 16:25:58,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:25:58,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:25:58,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:25:58,599 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:25:58,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:25:57" (1/2) ... [2018-10-14 16:25:58,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30979ed2 and model type ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:25:58, skipping insertion in model container [2018-10-14 16:25:58,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:25:58" (2/2) ... [2018-10-14 16:25:58,603 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_true-valid-memsafety.c_11.bpl [2018-10-14 16:25:58,613 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:25:58,622 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:25:58,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:25:58,669 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:25:58,670 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:25:58,670 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:25:58,670 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:25:58,670 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:25:58,670 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:25:58,671 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:25:58,671 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:25:58,671 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:25:58,689 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-10-14 16:25:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-14 16:25:58,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:25:58,700 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] [2018-10-14 16:25:58,701 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:25:58,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:25:58,708 INFO L82 PathProgramCache]: Analyzing trace with hash 520473974, now seen corresponding path program 1 times [2018-10-14 16:25:58,774 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:25:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:25:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:25:59,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:25:59,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-14 16:25:59,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-14 16:25:59,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-14 16:25:59,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-14 16:25:59,066 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 6 states. [2018-10-14 16:25:59,409 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-14 16:25:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:25:59,557 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-10-14 16:25:59,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:25:59,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-10-14 16:25:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:25:59,574 INFO L225 Difference]: With dead ends: 89 [2018-10-14 16:25:59,574 INFO L226 Difference]: Without dead ends: 89 [2018-10-14 16:25:59,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:25:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-14 16:25:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2018-10-14 16:25:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-14 16:25:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-10-14 16:25:59,619 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 30 [2018-10-14 16:25:59,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:25:59,620 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-10-14 16:25:59,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-14 16:25:59,620 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-10-14 16:25:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-14 16:25:59,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:25:59,622 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] [2018-10-14 16:25:59,623 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:25:59,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:25:59,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1549653001, now seen corresponding path program 1 times [2018-10-14 16:25:59,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:25:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:25:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-14 16:25:59,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:25:59,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-14 16:25:59,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:25:59,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:25:59,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:25:59,799 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 7 states. [2018-10-14 16:26:00,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:00,099 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-10-14 16:26:00,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-14 16:26:00,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2018-10-14 16:26:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:00,101 INFO L225 Difference]: With dead ends: 103 [2018-10-14 16:26:00,102 INFO L226 Difference]: Without dead ends: 103 [2018-10-14 16:26:00,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:26:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-14 16:26:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2018-10-14 16:26:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-14 16:26:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2018-10-14 16:26:00,113 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 56 [2018-10-14 16:26:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:00,114 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2018-10-14 16:26:00,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:26:00,114 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2018-10-14 16:26:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-14 16:26:00,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:26:00,117 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] [2018-10-14 16:26:00,120 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:26:00,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:26:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1283922749, now seen corresponding path program 1 times [2018-10-14 16:26:00,121 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:26:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:26:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:26:00,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:26:00,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-14 16:26:00,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:26:00,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:26:00,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:26:00,698 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 10 states. [2018-10-14 16:26:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:01,741 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2018-10-14 16:26:01,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-14 16:26:01,742 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2018-10-14 16:26:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:01,744 INFO L225 Difference]: With dead ends: 151 [2018-10-14 16:26:01,744 INFO L226 Difference]: Without dead ends: 151 [2018-10-14 16:26:01,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2018-10-14 16:26:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-14 16:26:01,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2018-10-14 16:26:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-14 16:26:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2018-10-14 16:26:01,757 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 71 [2018-10-14 16:26:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:01,758 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2018-10-14 16:26:01,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:26:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2018-10-14 16:26:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-14 16:26:01,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:26:01,762 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-14 16:26:01,762 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:26:01,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:26:01,763 INFO L82 PathProgramCache]: Analyzing trace with hash -142794864, now seen corresponding path program 2 times [2018-10-14 16:26:01,764 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:26:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:26:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-14 16:26:01,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:26:01,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:26:01,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:26:01,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:26:01,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:26:01,935 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 8 states. [2018-10-14 16:26:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:02,124 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2018-10-14 16:26:02,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:26:02,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2018-10-14 16:26:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:02,128 INFO L225 Difference]: With dead ends: 132 [2018-10-14 16:26:02,128 INFO L226 Difference]: Without dead ends: 132 [2018-10-14 16:26:02,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:26:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-14 16:26:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2018-10-14 16:26:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-14 16:26:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-14 16:26:02,140 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 97 [2018-10-14 16:26:02,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:02,141 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-14 16:26:02,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:26:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-14 16:26:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-14 16:26:02,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:26:02,144 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:26:02,144 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:26:02,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:26:02,144 INFO L82 PathProgramCache]: Analyzing trace with hash -845371370, now seen corresponding path program 3 times [2018-10-14 16:26:02,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:26:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:26:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-14 16:26:02,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:26:02,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-14 16:26:02,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:26:02,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:26:02,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:26:02,514 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 12 states. [2018-10-14 16:26:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:03,019 INFO L93 Difference]: Finished difference Result 197 states and 200 transitions. [2018-10-14 16:26:03,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-14 16:26:03,021 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2018-10-14 16:26:03,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:03,024 INFO L225 Difference]: With dead ends: 197 [2018-10-14 16:26:03,025 INFO L226 Difference]: Without dead ends: 197 [2018-10-14 16:26:03,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:26:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-14 16:26:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 128. [2018-10-14 16:26:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-14 16:26:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2018-10-14 16:26:03,037 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 112 [2018-10-14 16:26:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:03,038 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2018-10-14 16:26:03,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:26:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2018-10-14 16:26:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-14 16:26:03,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:26:03,041 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, 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] [2018-10-14 16:26:03,041 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:26:03,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:26:03,042 INFO L82 PathProgramCache]: Analyzing trace with hash 513791254, now seen corresponding path program 4 times [2018-10-14 16:26:03,043 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:26:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:26:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 5 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-14 16:26:03,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:26:03,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-14 16:26:03,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-14 16:26:03,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-14 16:26:03,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:26:03,337 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand 14 states. [2018-10-14 16:26:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:04,639 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2018-10-14 16:26:04,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-14 16:26:04,640 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2018-10-14 16:26:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:04,642 INFO L225 Difference]: With dead ends: 222 [2018-10-14 16:26:04,643 INFO L226 Difference]: Without dead ends: 222 [2018-10-14 16:26:04,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:26:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-14 16:26:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 184. [2018-10-14 16:26:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-14 16:26:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 189 transitions. [2018-10-14 16:26:04,659 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 189 transitions. Word has length 127 [2018-10-14 16:26:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:04,663 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 189 transitions. [2018-10-14 16:26:04,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-14 16:26:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 189 transitions. [2018-10-14 16:26:04,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-14 16:26:04,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:26:04,668 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:26:04,671 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:26:04,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:26:04,672 INFO L82 PathProgramCache]: Analyzing trace with hash 753537129, now seen corresponding path program 5 times [2018-10-14 16:26:04,673 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:26:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:26:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 104 proven. 47 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-14 16:26:04,983 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:26:04,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-14 16:26:04,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:26:04,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:26:04,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:26:04,985 INFO L87 Difference]: Start difference. First operand 184 states and 189 transitions. Second operand 10 states. [2018-10-14 16:26:05,407 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-14 16:26:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:05,473 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2018-10-14 16:26:05,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-14 16:26:05,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 153 [2018-10-14 16:26:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:05,475 INFO L225 Difference]: With dead ends: 184 [2018-10-14 16:26:05,476 INFO L226 Difference]: Without dead ends: 184 [2018-10-14 16:26:05,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:26:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-14 16:26:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-14 16:26:05,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-14 16:26:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2018-10-14 16:26:05,493 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 153 [2018-10-14 16:26:05,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:05,494 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2018-10-14 16:26:05,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:26:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2018-10-14 16:26:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-14 16:26:05,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:26:05,496 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:26:05,497 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:26:05,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:26:05,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1704821609, now seen corresponding path program 6 times [2018-10-14 16:26:05,503 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:26:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:26:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 136 proven. 65 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-14 16:26:06,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:26:06,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-14 16:26:06,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-14 16:26:06,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-14 16:26:06,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:26:06,610 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand 12 states. [2018-10-14 16:26:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:07,057 INFO L93 Difference]: Finished difference Result 184 states and 185 transitions. [2018-10-14 16:26:07,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:26:07,057 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2018-10-14 16:26:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:07,059 INFO L225 Difference]: With dead ends: 184 [2018-10-14 16:26:07,059 INFO L226 Difference]: Without dead ends: 184 [2018-10-14 16:26:07,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:26:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-14 16:26:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-14 16:26:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-14 16:26:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2018-10-14 16:26:07,065 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 168 [2018-10-14 16:26:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:07,066 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2018-10-14 16:26:07,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-14 16:26:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2018-10-14 16:26:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-14 16:26:07,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:26:07,068 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:26:07,068 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:26:07,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:26:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -684347287, now seen corresponding path program 7 times [2018-10-14 16:26:07,069 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:26:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:26:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 131 proven. 17 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-14 16:26:07,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:26:07,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:26:07,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:26:07,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:26:07,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:26:07,353 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 11 states. [2018-10-14 16:26:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:26:07,672 INFO L93 Difference]: Finished difference Result 194 states and 195 transitions. [2018-10-14 16:26:07,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-14 16:26:07,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 183 [2018-10-14 16:26:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:26:07,674 INFO L225 Difference]: With dead ends: 194 [2018-10-14 16:26:07,674 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:26:07,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2018-10-14 16:26:07,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:26:07,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:26:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:26:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:26:07,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2018-10-14 16:26:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:26:07,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:26:07,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:26:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:26:07,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:26:07,683 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:26:07 BoogieIcfgContainer [2018-10-14 16:26:07,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:26:07,684 INFO L168 Benchmark]: Toolchain (without parser) took 9749.26 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 23.1 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 250.2 MB). Peak memory consumption was 273.2 MB. Max. memory is 7.1 GB. [2018-10-14 16:26:07,685 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:26:07,686 INFO L168 Benchmark]: Boogie Preprocessor took 47.16 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. [2018-10-14 16:26:07,686 INFO L168 Benchmark]: RCFGBuilder took 610.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-14 16:26:07,687 INFO L168 Benchmark]: TraceAbstraction took 9087.52 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 23.1 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 229.0 MB). Peak memory consumption was 252.1 MB. Max. memory is 7.1 GB. [2018-10-14 16:26:07,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.16 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 610.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9087.52 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 23.1 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 229.0 MB). Peak memory consumption was 252.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 129]: 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, 61 locations, 1 error locations. SAFE Result, 9.0s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 5.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 729 SDtfs, 2332 SDslu, 3637 SDs, 0 SdLazy, 1320 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 214 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 997 NumberOfCodeBlocks, 997 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 988 ConstructedInterpolants, 0 QuantifiedInterpolants, 322144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 612/931 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/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-26-07-701.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-26-07-701.csv Received shutdown request...