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 0.1.23-502d2f4 [2018-10-12 20:45:49,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:45:49,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:45:49,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:45:49,871 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:45:49,872 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:45:49,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:45:49,875 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:45:49,877 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:45:49,878 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:45:49,879 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:45:49,879 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:45:49,880 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:45:49,881 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:45:49,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:45:49,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:45:49,884 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:45:49,886 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:45:49,888 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:45:49,890 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:45:49,891 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:45:49,893 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:45:49,895 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-12 20:45:49,905 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 20:45:49,915 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:45:49,916 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:45:49,917 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:45:49,917 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:45:49,917 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:45:49,918 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:45:49,918 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:45:49,919 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:45:49,919 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:45:49,919 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:45:49,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:45:49,920 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:45:49,920 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:45:49,921 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:45:49,921 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:45:49,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:45:49,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:45:49,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:45:49,981 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:45:49,982 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:45:49,983 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl [2018-10-12 20:45:49,983 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/ArraysOfVariableLength_true-valid-memsafety.c_11.bpl' [2018-10-12 20:45:50,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:45:50,047 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:45:50,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:45:50,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:45:50,048 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:45:50,075 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 12.10 08:45:50" (1/1) ... [2018-10-12 20:45:50,077 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 12.10 08:45:50" (1/1) ... [2018-10-12 20:45:50,091 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 12.10 08:45:50" (1/1) ... [2018-10-12 20:45:50,092 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 12.10 08:45:50" (1/1) ... [2018-10-12 20:45:50,096 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 12.10 08:45:50" (1/1) ... [2018-10-12 20:45:50,098 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 12.10 08:45:50" (1/1) ... [2018-10-12 20:45:50,100 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 12.10 08:45:50" (1/1) ... [2018-10-12 20:45:50,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:45:50,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:45:50,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:45:50,103 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:45:50,104 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 12.10 08:45:50" (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 20:45:50,178 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:45:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:45:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:45:50,830 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:45:50,831 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:45:50 BoogieIcfgContainer [2018-10-12 20:45:50,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:45:50,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:45:50,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:45:50,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:45:50,837 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 12.10 08:45:50" (1/2) ... [2018-10-12 20:45:50,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61cb4422 and model type ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:45:50, skipping insertion in model container [2018-10-12 20:45:50,838 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 12.10 08:45:50" (2/2) ... [2018-10-12 20:45:50,840 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_true-valid-memsafety.c_11.bpl [2018-10-12 20:45:50,850 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:45:50,859 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:45:50,872 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:45:50,901 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:45:50,902 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:45:50,902 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:45:50,902 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:45:50,902 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:45:50,903 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:45:50,903 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:45:50,903 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:45:50,903 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:45:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-10-12 20:45:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-12 20:45:50,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:50,931 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] [2018-10-12 20:45:50,933 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:50,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:50,938 INFO L82 PathProgramCache]: Analyzing trace with hash 520473974, now seen corresponding path program 1 times [2018-10-12 20:45:50,988 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:51,206 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 20:45:51,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:45:51,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-12 20:45:51,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-12 20:45:51,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-12 20:45:51,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-12 20:45:51,233 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 6 states. [2018-10-12 20:45:51,486 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-12 20:45:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:51,759 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2018-10-12 20:45:51,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-12 20:45:51,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-10-12 20:45:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:51,775 INFO L225 Difference]: With dead ends: 89 [2018-10-12 20:45:51,775 INFO L226 Difference]: Without dead ends: 89 [2018-10-12 20:45:51,778 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 [2018-10-12 20:45:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-12 20:45:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2018-10-12 20:45:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-12 20:45:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2018-10-12 20:45:51,828 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 30 [2018-10-12 20:45:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:51,829 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2018-10-12 20:45:51,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-12 20:45:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2018-10-12 20:45:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-12 20:45:51,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:51,832 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] [2018-10-12 20:45:51,832 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:51,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:51,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1549653001, now seen corresponding path program 1 times [2018-10-12 20:45:51,834 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:45:52,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:45:52,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-12 20:45:52,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-12 20:45:52,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-12 20:45:52,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-12 20:45:52,069 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 7 states. [2018-10-12 20:45:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:52,428 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2018-10-12 20:45:52,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-12 20:45:52,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2018-10-12 20:45:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:52,432 INFO L225 Difference]: With dead ends: 103 [2018-10-12 20:45:52,432 INFO L226 Difference]: Without dead ends: 103 [2018-10-12 20:45:52,434 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 [2018-10-12 20:45:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-12 20:45:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2018-10-12 20:45:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-12 20:45:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2018-10-12 20:45:52,443 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 56 [2018-10-12 20:45:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:52,444 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2018-10-12 20:45:52,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-12 20:45:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2018-10-12 20:45:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-12 20:45:52,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:52,447 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] [2018-10-12 20:45:52,448 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:52,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1283922749, now seen corresponding path program 1 times [2018-10-12 20:45:52,449 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:45:52,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:45:52,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-12 20:45:52,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-12 20:45:52,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-12 20:45:52,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-12 20:45:52,675 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 10 states. [2018-10-12 20:45:53,151 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-12 20:45:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:54,120 INFO L93 Difference]: Finished difference Result 151 states and 154 transitions. [2018-10-12 20:45:54,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-12 20:45:54,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2018-10-12 20:45:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:54,123 INFO L225 Difference]: With dead ends: 151 [2018-10-12 20:45:54,123 INFO L226 Difference]: Without dead ends: 151 [2018-10-12 20:45:54,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2018-10-12 20:45:54,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-12 20:45:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2018-10-12 20:45:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-12 20:45:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2018-10-12 20:45:54,136 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 71 [2018-10-12 20:45:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:54,137 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2018-10-12 20:45:54,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-12 20:45:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2018-10-12 20:45:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-12 20:45:54,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:54,141 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] [2018-10-12 20:45:54,141 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:54,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:54,142 INFO L82 PathProgramCache]: Analyzing trace with hash -142794864, now seen corresponding path program 2 times [2018-10-12 20:45:54,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 39 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:45:54,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:45:54,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-12 20:45:54,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-12 20:45:54,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-12 20:45:54,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-12 20:45:54,311 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 8 states. [2018-10-12 20:45:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:54,486 INFO L93 Difference]: Finished difference Result 132 states and 134 transitions. [2018-10-12 20:45:54,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:45:54,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2018-10-12 20:45:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:54,489 INFO L225 Difference]: With dead ends: 132 [2018-10-12 20:45:54,489 INFO L226 Difference]: Without dead ends: 132 [2018-10-12 20:45:54,489 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 [2018-10-12 20:45:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-10-12 20:45:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 113. [2018-10-12 20:45:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-12 20:45:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-12 20:45:54,499 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 97 [2018-10-12 20:45:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:54,500 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-12 20:45:54,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-12 20:45:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-12 20:45:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-12 20:45:54,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:54,502 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] [2018-10-12 20:45:54,502 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:54,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash -845371370, now seen corresponding path program 3 times [2018-10-12 20:45:54,504 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-12 20:45:54,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:45:54,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-12 20:45:54,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 20:45:54,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 20:45:54,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:45:54,803 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 12 states. [2018-10-12 20:45:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:55,330 INFO L93 Difference]: Finished difference Result 197 states and 200 transitions. [2018-10-12 20:45:55,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-12 20:45:55,331 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2018-10-12 20:45:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:55,336 INFO L225 Difference]: With dead ends: 197 [2018-10-12 20:45:55,336 INFO L226 Difference]: Without dead ends: 197 [2018-10-12 20:45:55,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2018-10-12 20:45:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-12 20:45:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 128. [2018-10-12 20:45:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-10-12 20:45:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2018-10-12 20:45:55,349 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 112 [2018-10-12 20:45:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:55,350 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2018-10-12 20:45:55,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 20:45:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2018-10-12 20:45:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-12 20:45:55,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:55,353 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] [2018-10-12 20:45:55,353 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:55,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:55,354 INFO L82 PathProgramCache]: Analyzing trace with hash 513791254, now seen corresponding path program 4 times [2018-10-12 20:45:55,355 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 5 proven. 99 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-12 20:45:55,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:45:55,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-12 20:45:55,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-12 20:45:55,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-12 20:45:55,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:45:55,738 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand 14 states. [2018-10-12 20:45:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:57,164 INFO L93 Difference]: Finished difference Result 222 states and 227 transitions. [2018-10-12 20:45:57,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-12 20:45:57,166 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2018-10-12 20:45:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:57,168 INFO L225 Difference]: With dead ends: 222 [2018-10-12 20:45:57,169 INFO L226 Difference]: Without dead ends: 222 [2018-10-12 20:45:57,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=434, Invalid=1458, Unknown=0, NotChecked=0, Total=1892 [2018-10-12 20:45:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-12 20:45:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 184. [2018-10-12 20:45:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-12 20:45:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 189 transitions. [2018-10-12 20:45:57,183 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 189 transitions. Word has length 127 [2018-10-12 20:45:57,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:57,183 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 189 transitions. [2018-10-12 20:45:57,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-12 20:45:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 189 transitions. [2018-10-12 20:45:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-12 20:45:57,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:57,187 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] [2018-10-12 20:45:57,187 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:57,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:57,188 INFO L82 PathProgramCache]: Analyzing trace with hash 753537129, now seen corresponding path program 5 times [2018-10-12 20:45:57,189 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 104 proven. 47 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-12 20:45:57,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:45:57,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-12 20:45:57,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-12 20:45:57,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-12 20:45:57,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-12 20:45:57,512 INFO L87 Difference]: Start difference. First operand 184 states and 189 transitions. Second operand 10 states. [2018-10-12 20:45:57,928 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-12 20:45:57,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:57,991 INFO L93 Difference]: Finished difference Result 184 states and 187 transitions. [2018-10-12 20:45:57,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-12 20:45:57,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 153 [2018-10-12 20:45:57,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:57,993 INFO L225 Difference]: With dead ends: 184 [2018-10-12 20:45:57,994 INFO L226 Difference]: Without dead ends: 184 [2018-10-12 20:45:57,995 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 [2018-10-12 20:45:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-12 20:45:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-12 20:45:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-12 20:45:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 187 transitions. [2018-10-12 20:45:58,003 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 187 transitions. Word has length 153 [2018-10-12 20:45:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:58,004 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 187 transitions. [2018-10-12 20:45:58,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-12 20:45:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 187 transitions. [2018-10-12 20:45:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-12 20:45:58,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:58,007 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] [2018-10-12 20:45:58,008 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:58,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:58,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1704821609, now seen corresponding path program 6 times [2018-10-12 20:45:58,009 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 136 proven. 65 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-12 20:45:58,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:45:58,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-12 20:45:58,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-12 20:45:58,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-12 20:45:58,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:45:58,286 INFO L87 Difference]: Start difference. First operand 184 states and 187 transitions. Second operand 12 states. [2018-10-12 20:45:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:45:58,844 INFO L93 Difference]: Finished difference Result 184 states and 185 transitions. [2018-10-12 20:45:58,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-12 20:45:58,845 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2018-10-12 20:45:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:45:58,846 INFO L225 Difference]: With dead ends: 184 [2018-10-12 20:45:58,847 INFO L226 Difference]: Without dead ends: 184 [2018-10-12 20:45:58,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2018-10-12 20:45:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-10-12 20:45:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2018-10-12 20:45:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-12 20:45:58,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2018-10-12 20:45:58,855 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 168 [2018-10-12 20:45:58,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:45:58,856 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2018-10-12 20:45:58,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-12 20:45:58,856 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2018-10-12 20:45:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-12 20:45:58,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:45:58,859 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] [2018-10-12 20:45:58,859 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:45:58,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:45:58,860 INFO L82 PathProgramCache]: Analyzing trace with hash -684347287, now seen corresponding path program 7 times [2018-10-12 20:45:58,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:45:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:45:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 131 proven. 17 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-12 20:45:59,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:45:59,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-12 20:45:59,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 20:45:59,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 20:45:59,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-12 20:45:59,766 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand 11 states. [2018-10-12 20:46:00,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:46:00,103 INFO L93 Difference]: Finished difference Result 194 states and 195 transitions. [2018-10-12 20:46:00,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-12 20:46:00,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 183 [2018-10-12 20:46:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:46:00,105 INFO L225 Difference]: With dead ends: 194 [2018-10-12 20:46:00,106 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:46:00,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2018-10-12 20:46:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:46:00,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:46:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:46:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:46:00,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2018-10-12 20:46:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:46:00,108 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:46:00,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 20:46:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:46:00,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:46:00,114 INFO L202 PluginConnector]: Adding new model ArraysOfVariableLength_true-valid-memsafety.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:46:00 BoogieIcfgContainer [2018-10-12 20:46:00,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:46:00,115 INFO L168 Benchmark]: Toolchain (without parser) took 10069.89 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 250.9 MB). Peak memory consumption was 272.4 MB. Max. memory is 7.1 GB. [2018-10-12 20:46:00,117 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:46:00,117 INFO L168 Benchmark]: Boogie Preprocessor took 55.19 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. [2018-10-12 20:46:00,118 INFO L168 Benchmark]: RCFGBuilder took 728.51 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. [2018-10-12 20:46:00,118 INFO L168 Benchmark]: TraceAbstraction took 9281.91 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 229.8 MB). Peak memory consumption was 251.3 MB. Max. memory is 7.1 GB. [2018-10-12 20:46:00,122 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.19 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. * RCFGBuilder took 728.51 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 9281.91 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 21.5 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 229.8 MB). Peak memory consumption was 251.3 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, 9.2s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 5.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 729 SDtfs, 2332 SDslu, 3637 SDs, 0 SdLazy, 1320 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s 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, 2.5s 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-0-2018-10-12_20-46-00-133.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-0-2018-10-12_20-46-00-133.csv Received shutdown request...