java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:33:47,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:47,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:47,067 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:47,069 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:47,070 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:47,072 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:47,073 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:47,075 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:47,076 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:47,077 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:33:47,077 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:33:47,078 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:33:47,079 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:33:47,080 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:33:47,081 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:33:47,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:33:47,084 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:33:47,086 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:33:47,087 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:33:47,088 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:33:47,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:33:47,092 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:33:47,101 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 16:33:47,111 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:47,111 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:47,112 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:47,112 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:47,113 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:47,113 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:47,113 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:47,114 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:47,114 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:47,114 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:47,114 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:47,115 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:47,115 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:47,116 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:47,116 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:47,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:47,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:47,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:47,206 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:47,207 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:47,208 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl [2018-10-14 16:33:47,208 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl' [2018-10-14 16:33:47,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:47,323 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:47,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:47,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:47,324 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:47,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:47,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:47,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:47,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:47,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (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 16:33:47,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:47,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:47,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:48,435 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:48,436 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:48 BoogieIcfgContainer [2018-10-14 16:33:48,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:48,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:48,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:48,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:48,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/2) ... [2018-10-14 16:33:48,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c529d74 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:48, skipping insertion in model container [2018-10-14 16:33:48,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:48" (2/2) ... [2018-10-14 16:33:48,444 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl [2018-10-14 16:33:48,454 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:48,463 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:48,480 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:48,510 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:48,511 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:48,511 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:48,511 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:48,512 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:48,512 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:48,512 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:48,512 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:48,512 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2018-10-14 16:33:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-14 16:33:48,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:48,550 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:48,552 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:48,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:48,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2084007181, now seen corresponding path program 1 times [2018-10-14 16:33:48,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:48,910 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 16:33:48,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:48,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-14 16:33:48,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:33:48,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:33:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:33:48,938 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 7 states. [2018-10-14 16:33:50,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:50,727 INFO L93 Difference]: Finished difference Result 287 states and 292 transitions. [2018-10-14 16:33:50,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:33:50,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-10-14 16:33:50,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:50,748 INFO L225 Difference]: With dead ends: 287 [2018-10-14 16:33:50,748 INFO L226 Difference]: Without dead ends: 287 [2018-10-14 16:33:50,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:33:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-14 16:33:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 186. [2018-10-14 16:33:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-14 16:33:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2018-10-14 16:33:50,807 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 47 [2018-10-14 16:33:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:50,808 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2018-10-14 16:33:50,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:33:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2018-10-14 16:33:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-14 16:33:50,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:50,812 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:50,815 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:50,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:50,816 INFO L82 PathProgramCache]: Analyzing trace with hash -235602663, now seen corresponding path program 1 times [2018-10-14 16:33:50,817 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:51,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:51,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 16:33:51,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:33:51,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:33:51,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:33:51,093 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand 11 states. [2018-10-14 16:33:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:52,033 INFO L93 Difference]: Finished difference Result 356 states and 361 transitions. [2018-10-14 16:33:52,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:33:52,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2018-10-14 16:33:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:52,046 INFO L225 Difference]: With dead ends: 356 [2018-10-14 16:33:52,047 INFO L226 Difference]: Without dead ends: 345 [2018-10-14 16:33:52,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:33:52,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-10-14 16:33:52,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 208. [2018-10-14 16:33:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-14 16:33:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 213 transitions. [2018-10-14 16:33:52,073 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 213 transitions. Word has length 74 [2018-10-14 16:33:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:52,073 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 213 transitions. [2018-10-14 16:33:52,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:33:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 213 transitions. [2018-10-14 16:33:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-14 16:33:52,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:52,078 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:52,078 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:52,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:52,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1289562407, now seen corresponding path program 1 times [2018-10-14 16:33:52,080 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:52,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:52,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:33:52,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:33:52,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:33:52,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:33:52,300 INFO L87 Difference]: Start difference. First operand 208 states and 213 transitions. Second operand 8 states. [2018-10-14 16:33:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:53,306 INFO L93 Difference]: Finished difference Result 477 states and 484 transitions. [2018-10-14 16:33:53,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:33:53,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2018-10-14 16:33:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:53,311 INFO L225 Difference]: With dead ends: 477 [2018-10-14 16:33:53,312 INFO L226 Difference]: Without dead ends: 473 [2018-10-14 16:33:53,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:33:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-10-14 16:33:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 251. [2018-10-14 16:33:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-14 16:33:53,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 257 transitions. [2018-10-14 16:33:53,327 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 257 transitions. Word has length 90 [2018-10-14 16:33:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:53,328 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 257 transitions. [2018-10-14 16:33:53,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:33:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 257 transitions. [2018-10-14 16:33:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-14 16:33:53,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:53,332 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:53,332 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:53,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:53,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1811037559, now seen corresponding path program 1 times [2018-10-14 16:33:53,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:53,523 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 16:33:53,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:53,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:33:53,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:33:53,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:33:53,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:33:53,525 INFO L87 Difference]: Start difference. First operand 251 states and 257 transitions. Second operand 9 states. [2018-10-14 16:33:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:54,105 INFO L93 Difference]: Finished difference Result 349 states and 354 transitions. [2018-10-14 16:33:54,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:33:54,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2018-10-14 16:33:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:54,108 INFO L225 Difference]: With dead ends: 349 [2018-10-14 16:33:54,109 INFO L226 Difference]: Without dead ends: 317 [2018-10-14 16:33:54,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:33:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-10-14 16:33:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 251. [2018-10-14 16:33:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-14 16:33:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 256 transitions. [2018-10-14 16:33:54,120 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 256 transitions. Word has length 106 [2018-10-14 16:33:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:54,121 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 256 transitions. [2018-10-14 16:33:54,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:33:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 256 transitions. [2018-10-14 16:33:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-14 16:33:54,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:54,124 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:54,125 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:54,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:54,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1024211571, now seen corresponding path program 2 times [2018-10-14 16:33:54,126 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:54,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:54,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:54,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:54,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:54,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:54,255 INFO L87 Difference]: Start difference. First operand 251 states and 256 transitions. Second operand 3 states. [2018-10-14 16:33:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:54,347 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-14 16:33:54,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:54,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-14 16:33:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:54,349 INFO L225 Difference]: With dead ends: 154 [2018-10-14 16:33:54,349 INFO L226 Difference]: Without dead ends: 150 [2018-10-14 16:33:54,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-14 16:33:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-14 16:33:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-14 16:33:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-14 16:33:54,355 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 133 [2018-10-14 16:33:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:54,356 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-14 16:33:54,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-14 16:33:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-14 16:33:54,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:54,359 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:54,359 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:54,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:54,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1481455299, now seen corresponding path program 1 times [2018-10-14 16:33:54,361 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:56,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:56,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:33:56,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:33:56,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:33:56,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:33:56,299 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 31 states. [2018-10-14 16:34:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:01,331 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-14 16:34:01,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-14 16:34:01,332 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 149 [2018-10-14 16:34:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:01,334 INFO L225 Difference]: With dead ends: 195 [2018-10-14 16:34:01,335 INFO L226 Difference]: Without dead ends: 195 [2018-10-14 16:34:01,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=630, Invalid=4200, Unknown=0, NotChecked=0, Total=4830 [2018-10-14 16:34:01,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-14 16:34:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 177. [2018-10-14 16:34:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-14 16:34:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-14 16:34:01,341 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 149 [2018-10-14 16:34:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:01,342 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-14 16:34:01,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:34:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-14 16:34:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-14 16:34:01,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:01,345 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:01,346 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:01,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1217297687, now seen corresponding path program 2 times [2018-10-14 16:34:01,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:02,174 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:02,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:34:02,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:34:02,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:34:02,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:34:02,176 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 31 states. [2018-10-14 16:34:04,239 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-10-14 16:34:05,700 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-14 16:34:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:06,225 INFO L93 Difference]: Finished difference Result 168 states and 167 transitions. [2018-10-14 16:34:06,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-14 16:34:06,226 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-10-14 16:34:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:06,226 INFO L225 Difference]: With dead ends: 168 [2018-10-14 16:34:06,227 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:34:06,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=733, Invalid=3689, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 16:34:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:34:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:34:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:34:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:34:06,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2018-10-14 16:34:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:06,229 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:34:06,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:34:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:34:06,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:34:06,234 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:34:06 BoogieIcfgContainer [2018-10-14 16:34:06,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:34:06,235 INFO L168 Benchmark]: Toolchain (without parser) took 18913.70 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 221.8 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -59.5 MB). Peak memory consumption was 162.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:34:06,237 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 16:34:06,238 INFO L168 Benchmark]: Boogie Preprocessor took 98.78 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 16:34:06,238 INFO L168 Benchmark]: RCFGBuilder took 1011.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:34:06,239 INFO L168 Benchmark]: TraceAbstraction took 17797.58 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 221.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -101.8 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. [2018-10-14 16:34:06,243 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 98.78 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 1011.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17797.58 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 221.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -101.8 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 242]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 139 locations, 1 error locations. SAFE Result, 17.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 13.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 819 SDtfs, 4017 SDslu, 5631 SDs, 0 SdLazy, 4572 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 544 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 775 NumberOfCodeBlocks, 775 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 768 ConstructedInterpolants, 0 QuantifiedInterpolants, 807239 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 78/117 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-34-06-254.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-34-06-254.csv Received shutdown request...