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_31.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-502d2f4 [2018-10-12 20:53:28,786 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:53:28,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:53:28,801 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:53:28,801 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:53:28,802 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:53:28,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:53:28,805 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:53:28,807 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:53:28,808 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:53:28,809 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:53:28,809 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:53:28,810 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:53:28,811 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:53:28,812 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:53:28,813 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:53:28,813 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:53:28,815 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:53:28,817 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:53:28,819 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:53:28,820 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:53:28,821 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:53:28,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 20:53:28,824 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 20:53:28,824 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 20:53:28,825 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 20:53:28,826 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 20:53:28,827 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 20:53:28,827 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 20:53:28,828 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 20:53:28,829 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 20:53:28,829 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-12 20:53:28,830 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-12 20:53:28,830 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-12 20:53:28,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-12 20:53:28,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-12 20:53:28,832 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 20:53:28,841 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:53:28,842 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:53:28,842 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:53:28,843 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:53:28,843 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:53:28,843 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:53:28,844 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:53:28,844 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:53:28,844 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:53:28,844 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:53:28,844 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:53:28,845 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:53:28,845 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:53:28,846 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:53:28,846 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:53:28,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:53:28,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:53:28,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:53:28,908 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:53:28,909 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:53:28,909 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl [2018-10-12 20:53:28,910 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl' [2018-10-12 20:53:28,987 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:53:28,989 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:53:28,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:53:28,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:53:28,990 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:53:29,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/1) ... [2018-10-12 20:53:29,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/1) ... [2018-10-12 20:53:29,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/1) ... [2018-10-12 20:53:29,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/1) ... [2018-10-12 20:53:29,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/1) ... [2018-10-12 20:53:29,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/1) ... [2018-10-12 20:53:29,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/1) ... [2018-10-12 20:53:29,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:53:29,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:53:29,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:53:29,090 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:53:29,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (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 20:53:29,166 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:53:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:53:29,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:53:30,002 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:53:30,003 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:30 BoogieIcfgContainer [2018-10-12 20:53:30,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:53:30,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:53:30,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:53:30,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:53:30,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 08:53:28" (1/2) ... [2018-10-12 20:53:30,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66974214 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:53:30, skipping insertion in model container [2018-10-12 20:53:30,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:53:30" (2/2) ... [2018-10-12 20:53:30,011 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl [2018-10-12 20:53:30,021 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:53:30,031 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:53:30,048 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:53:30,076 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:53:30,077 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:53:30,077 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:53:30,077 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:53:30,077 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:53:30,078 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:53:30,078 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:53:30,078 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:53:30,078 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:53:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2018-10-12 20:53:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-12 20:53:30,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:30,112 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] [2018-10-12 20:53:30,113 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:30,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:30,120 INFO L82 PathProgramCache]: Analyzing trace with hash 371435527, now seen corresponding path program 1 times [2018-10-12 20:53:30,173 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:30,365 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 20:53:30,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:30,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:53:30,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:53:30,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:53:30,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:53:30,392 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 3 states. [2018-10-12 20:53:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:30,488 INFO L93 Difference]: Finished difference Result 167 states and 170 transitions. [2018-10-12 20:53:30,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:53:30,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-12 20:53:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:30,504 INFO L225 Difference]: With dead ends: 167 [2018-10-12 20:53:30,504 INFO L226 Difference]: Without dead ends: 167 [2018-10-12 20:53:30,506 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 20:53:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-12 20:53:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 140. [2018-10-12 20:53:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-12 20:53:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2018-10-12 20:53:30,557 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 59 [2018-10-12 20:53:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:30,558 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2018-10-12 20:53:30,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:53:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2018-10-12 20:53:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-12 20:53:30,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:30,561 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] [2018-10-12 20:53:30,562 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:30,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1932585401, now seen corresponding path program 1 times [2018-10-12 20:53:30,563 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:31,014 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 20:53:31,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:31,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:53:31,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:53:31,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:53:31,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:53:31,018 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 9 states. [2018-10-12 20:53:31,427 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2018-10-12 20:53:31,802 WARN L178 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-12 20:53:32,164 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-10-12 20:53:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:32,657 INFO L93 Difference]: Finished difference Result 247 states and 250 transitions. [2018-10-12 20:53:32,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-12 20:53:32,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2018-10-12 20:53:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:32,661 INFO L225 Difference]: With dead ends: 247 [2018-10-12 20:53:32,661 INFO L226 Difference]: Without dead ends: 215 [2018-10-12 20:53:32,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-12 20:53:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-12 20:53:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 142. [2018-10-12 20:53:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-10-12 20:53:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2018-10-12 20:53:32,693 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 59 [2018-10-12 20:53:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:32,693 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2018-10-12 20:53:32,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:53:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2018-10-12 20:53:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-12 20:53:32,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:32,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:32,705 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:32,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:32,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1991365101, now seen corresponding path program 1 times [2018-10-12 20:53:32,709 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:33,079 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 20:53:33,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:33,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-12 20:53:33,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 20:53:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 20:53:33,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-12 20:53:33,082 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand 11 states. [2018-10-12 20:53:34,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:34,172 INFO L93 Difference]: Finished difference Result 364 states and 370 transitions. [2018-10-12 20:53:34,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-12 20:53:34,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2018-10-12 20:53:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:34,186 INFO L225 Difference]: With dead ends: 364 [2018-10-12 20:53:34,187 INFO L226 Difference]: Without dead ends: 364 [2018-10-12 20:53:34,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2018-10-12 20:53:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-10-12 20:53:34,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 221. [2018-10-12 20:53:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-12 20:53:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 225 transitions. [2018-10-12 20:53:34,207 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 225 transitions. Word has length 102 [2018-10-12 20:53:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:34,208 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 225 transitions. [2018-10-12 20:53:34,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 20:53:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 225 transitions. [2018-10-12 20:53:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-12 20:53:34,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:34,212 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2018-10-12 20:53:34,212 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:34,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:34,213 INFO L82 PathProgramCache]: Analyzing trace with hash 328842563, now seen corresponding path program 1 times [2018-10-12 20:53:34,214 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:53:35,283 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:53:35,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-12 20:53:35,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-12 20:53:35,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-12 20:53:35,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2018-10-12 20:53:35,286 INFO L87 Difference]: Start difference. First operand 221 states and 225 transitions. Second operand 25 states. [2018-10-12 20:53:36,385 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-10-12 20:53:37,119 WARN L178 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-10-12 20:53:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:38,944 INFO L93 Difference]: Finished difference Result 300 states and 303 transitions. [2018-10-12 20:53:38,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-12 20:53:38,944 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 134 [2018-10-12 20:53:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:38,948 INFO L225 Difference]: With dead ends: 300 [2018-10-12 20:53:38,948 INFO L226 Difference]: Without dead ends: 248 [2018-10-12 20:53:38,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2018-10-12 20:53:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-12 20:53:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 185. [2018-10-12 20:53:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-12 20:53:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2018-10-12 20:53:38,960 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 134 [2018-10-12 20:53:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:38,961 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2018-10-12 20:53:38,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-12 20:53:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2018-10-12 20:53:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-12 20:53:38,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:53:38,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-12 20:53:38,964 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:53:38,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:53:38,965 INFO L82 PathProgramCache]: Analyzing trace with hash -448090425, now seen corresponding path program 2 times [2018-10-12 20:53:38,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:53:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:53:39,091 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 20:53:39,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:53:39,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:53:39,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:53:39,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:53:39,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:53:39,093 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand 3 states. [2018-10-12 20:53:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:53:39,132 INFO L93 Difference]: Finished difference Result 67 states and 66 transitions. [2018-10-12 20:53:39,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:53:39,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2018-10-12 20:53:39,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:53:39,135 INFO L225 Difference]: With dead ends: 67 [2018-10-12 20:53:39,136 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:53:39,136 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 20:53:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:53:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:53:39,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:53:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:53:39,139 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2018-10-12 20:53:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:53:39,139 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:53:39,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:53:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:53:39,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:53:39,146 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 08:53:39 BoogieIcfgContainer [2018-10-12 20:53:39,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:53:39,147 INFO L168 Benchmark]: Toolchain (without parser) took 10158.90 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 42.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 303.6 MB). Peak memory consumption was 346.1 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:39,149 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:53:39,150 INFO L168 Benchmark]: Boogie Preprocessor took 98.86 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:53:39,150 INFO L168 Benchmark]: RCFGBuilder took 913.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:39,152 INFO L168 Benchmark]: TraceAbstraction took 9141.71 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 42.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 271.9 MB). Peak memory consumption was 314.4 MB. Max. memory is 7.1 GB. [2018-10-12 20:53:39,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.86 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 913.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9141.71 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 42.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 271.9 MB). Peak memory consumption was 314.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 221]: 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, 121 locations, 1 error locations. SAFE Result, 9.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 6.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 539 SDtfs, 2451 SDslu, 3398 SDs, 0 SdLazy, 1622 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred 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, 5 MinimizatonAttempts, 306 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 499 NumberOfCodeBlocks, 499 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 494 ConstructedInterpolants, 0 QuantifiedInterpolants, 363839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 52/65 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_31.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-12_20-53-39-177.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_31.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-12_20-53-39-177.csv Received shutdown request...