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 0.1.23-502d2f4 [2018-10-12 20:53:36,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:53:36,726 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:53:36,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:53:36,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:53:36,746 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:53:36,747 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:53:36,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:53:36,752 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:53:36,753 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:53:36,756 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-12 20:53:36,793 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:53:36,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:53:36,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:53:36,803 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:53:36,804 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:53:36,804 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:53:36,804 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:53:36,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:53:36,805 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:53:36,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:53:36,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:53:36,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:53:36,806 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:53:36,806 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:53:36,807 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:53:36,807 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:53:36,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:53:36,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:53:36,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:53:36,877 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:53:36,878 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:53:36,878 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl [2018-10-12 20:53:36,879 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl' [2018-10-12 20:53:36,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:53:36,982 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:53:36,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:53:36,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:53:36,983 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:53:37,006 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 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,008 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 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,024 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 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,024 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 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,034 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 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,036 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 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,038 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 12.10 08:53:36" (1/1) ... [2018-10-12 20:53:37,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:53:37,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:53:37,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:53:37,043 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:53:37,044 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 12.10 08:53:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-12 20:53:37,118 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:53:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:53:37,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:53:38,105 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:53:38,106 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 12.10 08:53:38 BoogieIcfgContainer [2018-10-12 20:53:38,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:53:38,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:53:38,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:53:38,111 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:53:38,111 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 12.10 08:53:36" (1/2) ... [2018-10-12 20:53:38,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa58a98 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:38, skipping insertion in model container [2018-10-12 20:53:38,112 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 12.10 08:53:38" (2/2) ... [2018-10-12 20:53:38,114 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_36.bpl [2018-10-12 20:53:38,124 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:53:38,133 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:53:38,150 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:53:38,179 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:53:38,180 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:53:38,180 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:53:38,180 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:53:38,180 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:53:38,180 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:53:38,181 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:53:38,181 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:53:38,181 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:53:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2018-10-12 20:53:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-12 20:53:38,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:38,215 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] [2018-10-12 20:53:38,216 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:38,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 2084007181, now seen corresponding path program 1 times [2018-10-12 20:53:38,287 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:38,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:38,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-12 20:53:38,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-12 20:53:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-12 20:53:38,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-12 20:53:38,692 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 7 states. [2018-10-12 20:53:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:40,362 INFO L93 Difference]: Finished difference Result 287 states and 292 transitions. [2018-10-12 20:53:40,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:53:40,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-10-12 20:53:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:40,383 INFO L225 Difference]: With dead ends: 287 [2018-10-12 20:53:40,383 INFO L226 Difference]: Without dead ends: 287 [2018-10-12 20:53:40,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:53:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-12 20:53:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 186. [2018-10-12 20:53:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-10-12 20:53:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 190 transitions. [2018-10-12 20:53:40,443 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 190 transitions. Word has length 47 [2018-10-12 20:53:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:40,444 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 190 transitions. [2018-10-12 20:53:40,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-12 20:53:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 190 transitions. [2018-10-12 20:53:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-12 20:53:40,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:40,449 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] [2018-10-12 20:53:40,449 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:40,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash -235602663, now seen corresponding path program 1 times [2018-10-12 20:53:40,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:40,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:40,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-12 20:53:40,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 20:53:40,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 20:53:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-12 20:53:40,745 INFO L87 Difference]: Start difference. First operand 186 states and 190 transitions. Second operand 11 states. [2018-10-12 20:53:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:41,623 INFO L93 Difference]: Finished difference Result 356 states and 361 transitions. [2018-10-12 20:53:41,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 20:53:41,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2018-10-12 20:53:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:41,637 INFO L225 Difference]: With dead ends: 356 [2018-10-12 20:53:41,637 INFO L226 Difference]: Without dead ends: 345 [2018-10-12 20:53:41,640 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 [2018-10-12 20:53:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-10-12 20:53:41,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 208. [2018-10-12 20:53:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-10-12 20:53:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 213 transitions. [2018-10-12 20:53:41,659 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 213 transitions. Word has length 74 [2018-10-12 20:53:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:41,660 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 213 transitions. [2018-10-12 20:53:41,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 20:53:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 213 transitions. [2018-10-12 20:53:41,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-12 20:53:41,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:41,664 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] [2018-10-12 20:53:41,664 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:41,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1289562407, now seen corresponding path program 1 times [2018-10-12 20:53:41,666 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:41,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:41,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-12 20:53:41,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-12 20:53:41,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-12 20:53:41,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-12 20:53:41,894 INFO L87 Difference]: Start difference. First operand 208 states and 213 transitions. Second operand 8 states. [2018-10-12 20:53:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:42,907 INFO L93 Difference]: Finished difference Result 477 states and 484 transitions. [2018-10-12 20:53:42,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 20:53:42,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2018-10-12 20:53:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:42,913 INFO L225 Difference]: With dead ends: 477 [2018-10-12 20:53:42,913 INFO L226 Difference]: Without dead ends: 473 [2018-10-12 20:53:42,914 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 [2018-10-12 20:53:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-10-12 20:53:42,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 251. [2018-10-12 20:53:42,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-12 20:53:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 257 transitions. [2018-10-12 20:53:42,934 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 257 transitions. Word has length 90 [2018-10-12 20:53:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:42,934 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 257 transitions. [2018-10-12 20:53:42,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-12 20:53:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 257 transitions. [2018-10-12 20:53:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-12 20:53:42,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:42,938 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] [2018-10-12 20:53:42,938 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:42,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1811037559, now seen corresponding path program 1 times [2018-10-12 20:53:42,939 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:53:43,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:43,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:53:43,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:53:43,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:53:43,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:53:43,142 INFO L87 Difference]: Start difference. First operand 251 states and 257 transitions. Second operand 9 states. [2018-10-12 20:53:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:43,743 INFO L93 Difference]: Finished difference Result 349 states and 354 transitions. [2018-10-12 20:53:43,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-12 20:53:43,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2018-10-12 20:53:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:43,745 INFO L225 Difference]: With dead ends: 349 [2018-10-12 20:53:43,746 INFO L226 Difference]: Without dead ends: 317 [2018-10-12 20:53:43,747 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 [2018-10-12 20:53:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-10-12 20:53:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 251. [2018-10-12 20:53:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-12 20:53:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 256 transitions. [2018-10-12 20:53:43,759 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 256 transitions. Word has length 106 [2018-10-12 20:53:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:43,759 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 256 transitions. [2018-10-12 20:53:43,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:53:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 256 transitions. [2018-10-12 20:53:43,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-12 20:53:43,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:43,763 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] [2018-10-12 20:53:43,763 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:43,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:43,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1024211571, now seen corresponding path program 2 times [2018-10-12 20:53:43,765 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:43,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:43,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:53:43,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:53:43,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:53:43,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:53:43,909 INFO L87 Difference]: Start difference. First operand 251 states and 256 transitions. Second operand 3 states. [2018-10-12 20:53:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:44,003 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-10-12 20:53:44,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:53:44,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-12 20:53:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:44,005 INFO L225 Difference]: With dead ends: 154 [2018-10-12 20:53:44,005 INFO L226 Difference]: Without dead ends: 150 [2018-10-12 20:53:44,007 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 [2018-10-12 20:53:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-12 20:53:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-10-12 20:53:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-10-12 20:53:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-10-12 20:53:44,012 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 133 [2018-10-12 20:53:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:44,012 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-10-12 20:53:44,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:53:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-10-12 20:53:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-12 20:53:44,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:44,015 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] [2018-10-12 20:53:44,016 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:44,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:44,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1481455299, now seen corresponding path program 1 times [2018-10-12 20:53:44,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:44,978 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 12 [2018-10-12 20:53:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:45,917 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:45,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-12 20:53:45,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-12 20:53:45,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-12 20:53:45,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2018-10-12 20:53:45,919 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 31 states. [2018-10-12 20:53:49,510 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2018-10-12 20:53:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:50,823 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-12 20:53:50,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-12 20:53:50,825 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 149 [2018-10-12 20:53:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:50,827 INFO L225 Difference]: With dead ends: 195 [2018-10-12 20:53:50,827 INFO L226 Difference]: Without dead ends: 195 [2018-10-12 20:53:50,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=630, Invalid=4200, Unknown=0, NotChecked=0, Total=4830 [2018-10-12 20:53:50,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-12 20:53:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 177. [2018-10-12 20:53:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-12 20:53:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-12 20:53:50,834 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 149 [2018-10-12 20:53:50,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:50,835 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-12 20:53:50,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-12 20:53:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-12 20:53:50,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-12 20:53:50,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:50,838 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] [2018-10-12 20:53:50,838 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:50,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:50,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1217297687, now seen corresponding path program 2 times [2018-10-12 20:53:50,840 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:52,054 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:52,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-12 20:53:52,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-12 20:53:52,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-12 20:53:52,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-12 20:53:52,056 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 31 states. [2018-10-12 20:53:54,085 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-10-12 20:53:55,638 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-10-12 20:53:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:56,190 INFO L93 Difference]: Finished difference Result 168 states and 167 transitions. [2018-10-12 20:53:56,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-12 20:53:56,191 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-10-12 20:53:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:56,192 INFO L225 Difference]: With dead ends: 168 [2018-10-12 20:53:56,192 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:53:56,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=733, Invalid=3689, Unknown=0, NotChecked=0, Total=4422 [2018-10-12 20:53:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:53:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:53:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:53:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:53:56,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2018-10-12 20:53:56,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:56,196 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:53:56,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-12 20:53:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:53:56,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:53:56,201 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 12.10 08:53:56 BoogieIcfgContainer [2018-10-12 20:53:56,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:53:56,202 INFO L168 Benchmark]: Toolchain (without parser) took 19221.10 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 255.3 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -102.6 MB). Peak memory consumption was 152.7 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:56,204 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:53:56,204 INFO L168 Benchmark]: Boogie Preprocessor took 59.91 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:53:56,205 INFO L168 Benchmark]: RCFGBuilder took 1063.08 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. [2018-10-12 20:53:56,206 INFO L168 Benchmark]: TraceAbstraction took 18094.06 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 255.3 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -144.9 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:56,210 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 0.20 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 59.91 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 1063.08 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 18094.06 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 255.3 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -144.9 MB). Peak memory consumption was 110.5 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, 18.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 13.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 819 SDtfs, 4017 SDslu, 5631 SDs, 0 SdLazy, 4572 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 9.4s 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 544 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s 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-0-2018-10-12_20-53-56-221.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-0-2018-10-12_20-53-56-221.csv Received shutdown request...