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_33.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:33:39,128 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:39,130 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:39,142 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:39,142 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:39,143 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:39,145 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:39,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:39,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:39,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:39,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:33:39,202 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 16:33:39,221 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:39,221 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:39,222 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:39,222 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:39,222 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:39,222 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:39,223 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:39,224 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:39,224 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:39,224 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:39,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:39,224 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:39,225 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:39,226 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:39,226 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:39,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:39,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:39,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:39,298 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:39,298 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:39,299 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl [2018-10-14 16:33:39,299 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl' [2018-10-14 16:33:39,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:39,391 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:39,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:39,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:39,392 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:39,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/1) ... [2018-10-14 16:33:39,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/1) ... [2018-10-14 16:33:39,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/1) ... [2018-10-14 16:33:39,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/1) ... [2018-10-14 16:33:39,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/1) ... [2018-10-14 16:33:39,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/1) ... [2018-10-14 16:33:39,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/1) ... [2018-10-14 16:33:39,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:39,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:39,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:39,495 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:39,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (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 16:33:39,570 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:39,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:40,615 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:40,617 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:40 BoogieIcfgContainer [2018-10-14 16:33:40,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:40,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:40,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:40,622 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:40,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:39" (1/2) ... [2018-10-14 16:33:40,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134c6953 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:40, skipping insertion in model container [2018-10-14 16:33:40,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:40" (2/2) ... [2018-10-14 16:33:40,626 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl [2018-10-14 16:33:40,637 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:40,646 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:40,664 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:40,695 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:40,695 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:40,696 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:40,696 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:40,696 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:40,696 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:40,696 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:40,697 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:40,697 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2018-10-14 16:33:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-14 16:33:40,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:40,733 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 16:33:40,735 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:40,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:40,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1142213649, now seen corresponding path program 1 times [2018-10-14 16:33:40,807 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:41,349 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 16:33:41,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:41,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 16:33:41,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:33:41,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:33:41,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:33:41,378 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 11 states. [2018-10-14 16:33:42,195 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-14 16:33:43,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:43,089 INFO L93 Difference]: Finished difference Result 234 states and 236 transitions. [2018-10-14 16:33:43,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:33:43,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2018-10-14 16:33:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:43,108 INFO L225 Difference]: With dead ends: 234 [2018-10-14 16:33:43,108 INFO L226 Difference]: Without dead ends: 223 [2018-10-14 16:33:43,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:33:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-14 16:33:43,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 142. [2018-10-14 16:33:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-14 16:33:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2018-10-14 16:33:43,166 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 68 [2018-10-14 16:33:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:43,166 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2018-10-14 16:33:43,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:33:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2018-10-14 16:33:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-14 16:33:43,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:43,171 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 16:33:43,172 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:43,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:43,172 INFO L82 PathProgramCache]: Analyzing trace with hash -918549793, now seen corresponding path program 1 times [2018-10-14 16:33:43,174 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:43,474 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 16:33:43,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:43,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:33:43,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:33:43,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:33:43,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:33:43,478 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 9 states. [2018-10-14 16:33:44,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:44,050 INFO L93 Difference]: Finished difference Result 238 states and 239 transitions. [2018-10-14 16:33:44,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-14 16:33:44,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2018-10-14 16:33:44,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:44,054 INFO L225 Difference]: With dead ends: 238 [2018-10-14 16:33:44,054 INFO L226 Difference]: Without dead ends: 206 [2018-10-14 16:33:44,055 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 16:33:44,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-14 16:33:44,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 144. [2018-10-14 16:33:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-10-14 16:33:44,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2018-10-14 16:33:44,067 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 100 [2018-10-14 16:33:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:44,068 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2018-10-14 16:33:44,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:33:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2018-10-14 16:33:44,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-14 16:33:44,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:44,071 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 16:33:44,072 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:44,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:44,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1542641517, now seen corresponding path program 1 times [2018-10-14 16:33:44,073 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:44,311 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 16:33:44,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:44,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-14 16:33:44,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:33:44,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:33:44,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:33:44,314 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand 7 states. [2018-10-14 16:33:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:44,936 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-10-14 16:33:44,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-14 16:33:44,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2018-10-14 16:33:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:44,941 INFO L225 Difference]: With dead ends: 333 [2018-10-14 16:33:44,941 INFO L226 Difference]: Without dead ends: 234 [2018-10-14 16:33:44,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:33:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-10-14 16:33:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 187. [2018-10-14 16:33:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-14 16:33:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2018-10-14 16:33:44,956 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 143 [2018-10-14 16:33:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:44,957 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2018-10-14 16:33:44,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:33:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2018-10-14 16:33:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-14 16:33:44,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:44,961 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 16:33:44,962 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:44,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1052114337, now seen corresponding path program 2 times [2018-10-14 16:33:44,963 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:45,086 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 16:33:45,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:45,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:45,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:45,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:45,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:45,088 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 3 states. [2018-10-14 16:33:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:45,097 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2018-10-14 16:33:45,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:45,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-10-14 16:33:45,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:45,098 INFO L225 Difference]: With dead ends: 67 [2018-10-14 16:33:45,099 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:33:45,100 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 16:33:45,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:33:45,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:33:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:33:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:33:45,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 186 [2018-10-14 16:33:45,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:45,101 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:33:45,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:45,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:33:45,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:33:45,107 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:33:45 BoogieIcfgContainer [2018-10-14 16:33:45,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:33:45,108 INFO L168 Benchmark]: Toolchain (without parser) took 5717.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 383.3 MB). Peak memory consumption was 383.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:45,110 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 16:33:45,110 INFO L168 Benchmark]: Boogie Preprocessor took 102.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:33:45,111 INFO L168 Benchmark]: RCFGBuilder took 1122.51 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 16:33:45,112 INFO L168 Benchmark]: TraceAbstraction took 4488.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.0 MB). Peak memory consumption was 341.0 MB. Max. memory is 7.1 GB. [2018-10-14 16:33:45,116 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 102.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1122.51 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 4488.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.0 MB). Peak memory consumption was 341.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 226]: 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, 135 locations, 1 error locations. SAFE Result, 4.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 2.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 408 SDtfs, 778 SDslu, 2154 SDs, 0 SdLazy, 806 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=187occurred 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, 4 MinimizatonAttempts, 190 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 497 NumberOfCodeBlocks, 497 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 493 ConstructedInterpolants, 0 QuantifiedInterpolants, 174566 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 74/76 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_33.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-33-45-128.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_33.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-33-45-128.csv Received shutdown request...