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_44.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:34:09,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:34:09,275 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:34:09,286 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:34:09,287 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:34:09,288 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:34:09,289 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:34:09,291 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:34:09,292 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:34:09,293 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:34:09,294 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:34:09,329 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 16:34:09,340 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:34:09,341 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:34:09,342 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:34:09,342 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:34:09,342 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:34:09,342 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:34:09,343 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:34:09,343 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:34:09,343 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:34:09,343 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:34:09,344 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:34:09,344 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:34:09,344 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:34:09,345 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:34:09,345 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:34:09,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:34:09,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:34:09,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:34:09,414 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:34:09,415 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:34:09,415 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl [2018-10-14 16:34:09,416 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl' [2018-10-14 16:34:09,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:34:09,496 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:34:09,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:34:09,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:34:09,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:34:09,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:34:09,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:34:09,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:34:09,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:34:09,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (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 16:34:09,650 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:34:09,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:34:09,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:34:10,568 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:34:10,569 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:10 BoogieIcfgContainer [2018-10-14 16:34:10,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:34:10,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:34:10,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:34:10,574 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:34:10,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/2) ... [2018-10-14 16:34:10,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c12627 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:34:10, skipping insertion in model container [2018-10-14 16:34:10,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:10" (2/2) ... [2018-10-14 16:34:10,577 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl [2018-10-14 16:34:10,587 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:34:10,596 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:34:10,614 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:34:10,643 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:34:10,644 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:34:10,644 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:34:10,644 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:34:10,645 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:34:10,645 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:34:10,645 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:34:10,645 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:34:10,645 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:34:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2018-10-14 16:34:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-14 16:34:10,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:10,682 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:10,683 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:10,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:10,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1942085122, now seen corresponding path program 1 times [2018-10-14 16:34:10,754 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:11,610 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 16:34:11,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:11,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 16:34:11,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:34:11,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:34:11,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:34:11,638 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 11 states. [2018-10-14 16:34:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:13,224 INFO L93 Difference]: Finished difference Result 252 states and 256 transitions. [2018-10-14 16:34:13,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:34:13,227 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2018-10-14 16:34:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:13,242 INFO L225 Difference]: With dead ends: 252 [2018-10-14 16:34:13,242 INFO L226 Difference]: Without dead ends: 241 [2018-10-14 16:34:13,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:34:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-14 16:34:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 151. [2018-10-14 16:34:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-14 16:34:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-14 16:34:13,298 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 68 [2018-10-14 16:34:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:13,299 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-14 16:34:13,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:34:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-14 16:34:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-14 16:34:13,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:13,304 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:34:13,305 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:13,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:13,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1916151022, now seen corresponding path program 1 times [2018-10-14 16:34:13,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:13,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:13,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:34:13,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:34:13,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:34:13,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:34:13,551 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 9 states. [2018-10-14 16:34:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:14,335 INFO L93 Difference]: Finished difference Result 312 states and 317 transitions. [2018-10-14 16:34:14,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:34:14,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2018-10-14 16:34:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:14,339 INFO L225 Difference]: With dead ends: 312 [2018-10-14 16:34:14,339 INFO L226 Difference]: Without dead ends: 280 [2018-10-14 16:34:14,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:34:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-10-14 16:34:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 153. [2018-10-14 16:34:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-14 16:34:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-10-14 16:34:14,354 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 100 [2018-10-14 16:34:14,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:14,355 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-10-14 16:34:14,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:34:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-10-14 16:34:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-14 16:34:14,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:14,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:14,359 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:14,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:14,359 INFO L82 PathProgramCache]: Analyzing trace with hash -765227934, now seen corresponding path program 1 times [2018-10-14 16:34:14,360 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-14 16:34:14,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:14,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:34:14,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:34:14,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:34:14,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:34:14,660 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 8 states. [2018-10-14 16:34:15,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:15,251 INFO L93 Difference]: Finished difference Result 360 states and 365 transitions. [2018-10-14 16:34:15,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-14 16:34:15,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2018-10-14 16:34:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:15,256 INFO L225 Difference]: With dead ends: 360 [2018-10-14 16:34:15,256 INFO L226 Difference]: Without dead ends: 261 [2018-10-14 16:34:15,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:34:15,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-14 16:34:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 205. [2018-10-14 16:34:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-14 16:34:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2018-10-14 16:34:15,270 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 143 [2018-10-14 16:34:15,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:15,271 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2018-10-14 16:34:15,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:34:15,272 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2018-10-14 16:34:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-14 16:34:15,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:15,276 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, 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] [2018-10-14 16:34:15,276 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:15,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:15,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1771799662, now seen corresponding path program 2 times [2018-10-14 16:34:15,277 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-14 16:34:15,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:15,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:34:15,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:34:15,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:34:15,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:15,405 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand 3 states. [2018-10-14 16:34:15,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:15,435 INFO L93 Difference]: Finished difference Result 284 states and 287 transitions. [2018-10-14 16:34:15,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:34:15,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-10-14 16:34:15,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:15,439 INFO L225 Difference]: With dead ends: 284 [2018-10-14 16:34:15,439 INFO L226 Difference]: Without dead ends: 282 [2018-10-14 16:34:15,440 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 16:34:15,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-10-14 16:34:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 271. [2018-10-14 16:34:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-14 16:34:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 274 transitions. [2018-10-14 16:34:15,454 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 274 transitions. Word has length 186 [2018-10-14 16:34:15,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:15,455 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 274 transitions. [2018-10-14 16:34:15,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:34:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 274 transitions. [2018-10-14 16:34:15,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-14 16:34:15,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:15,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:15,460 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:15,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:15,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1630596274, now seen corresponding path program 1 times [2018-10-14 16:34:15,461 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:15,810 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-14 16:34:15,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:15,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:34:15,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:34:15,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:34:15,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:34:15,812 INFO L87 Difference]: Start difference. First operand 271 states and 274 transitions. Second operand 8 states. [2018-10-14 16:34:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:16,197 INFO L93 Difference]: Finished difference Result 269 states and 272 transitions. [2018-10-14 16:34:16,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:34:16,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2018-10-14 16:34:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:16,198 INFO L225 Difference]: With dead ends: 269 [2018-10-14 16:34:16,198 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:34:16,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:34:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:34:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:34:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:34:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:34:16,200 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 186 [2018-10-14 16:34:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:16,201 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:34:16,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:34:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:34:16,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:34:16,205 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:34:16 BoogieIcfgContainer [2018-10-14 16:34:16,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:34:16,207 INFO L168 Benchmark]: Toolchain (without parser) took 6711.86 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.8 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -29.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:34:16,209 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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 16:34:16,209 INFO L168 Benchmark]: Boogie Preprocessor took 85.83 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 16:34:16,210 INFO L168 Benchmark]: RCFGBuilder took 986.61 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 16:34:16,211 INFO L168 Benchmark]: TraceAbstraction took 5635.12 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -71.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:34:16,215 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 0.21 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 85.83 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 986.61 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 5635.12 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 27.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -71.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 244]: 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, 144 locations, 1 error locations. SAFE Result, 5.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 705 SDtfs, 1362 SDslu, 2929 SDs, 0 SdLazy, 1144 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=4, 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, 5 MinimizatonAttempts, 284 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 683 NumberOfCodeBlocks, 683 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 678 ConstructedInterpolants, 0 QuantifiedInterpolants, 263801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 114/123 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_44.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-34-16-227.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_44.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-34-16-227.csv Received shutdown request...