/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-11 01:19:03,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-11 01:19:03,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-11 01:19:04,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-11 01:19:04,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-11 01:19:04,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-11 01:19:04,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-11 01:19:04,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-11 01:19:04,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-11 01:19:04,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-11 01:19:04,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-11 01:19:04,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-11 01:19:04,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-11 01:19:04,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-11 01:19:04,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-11 01:19:04,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-11 01:19:04,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-11 01:19:04,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-11 01:19:04,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-11 01:19:04,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-11 01:19:04,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-11 01:19:04,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-11 01:19:04,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-11 01:19:04,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-11 01:19:04,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-11 01:19:04,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-11 01:19:04,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-11 01:19:04,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-11 01:19:04,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-MCR.epf [2020-02-11 01:19:04,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-11 01:19:04,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-11 01:19:04,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-11 01:19:04,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-11 01:19:04,086 INFO L138 SettingsManager]: * Use SBE=true [2020-02-11 01:19:04,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-11 01:19:04,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-11 01:19:04,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-11 01:19:04,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-11 01:19:04,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-11 01:19:04,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-11 01:19:04,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-11 01:19:04,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-11 01:19:04,089 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-11 01:19:04,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-11 01:19:04,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-11 01:19:04,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-11 01:19:04,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-11 01:19:04,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-11 01:19:04,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-11 01:19:04,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-11 01:19:04,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-11 01:19:04,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-11 01:19:04,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-11 01:19:04,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-11 01:19:04,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-11 01:19:04,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-11 01:19:04,091 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-02-11 01:19:04,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-02-11 01:19:04,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-11 01:19:04,093 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-02-11 01:19:04,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-11 01:19:04,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-11 01:19:04,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-11 01:19:04,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-11 01:19:04,401 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-11 01:19:04,402 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-11 01:19:04,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl [2020-02-11 01:19:04,403 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_3.bpl' [2020-02-11 01:19:04,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-11 01:19:04,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-11 01:19:04,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-11 01:19:04,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-11 01:19:04,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-11 01:19:04,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-11 01:19:04,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-11 01:19:04,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-11 01:19:04,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-11 01:19:04,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/1) ... [2020-02-11 01:19:04,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-11 01:19:04,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-11 01:19:04,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-11 01:19:04,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-11 01:19:04,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-11 01:19:04,584 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-11 01:19:04,584 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-11 01:19:04,585 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-11 01:19:04,585 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-11 01:19:04,585 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-11 01:19:04,586 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-11 01:19:04,586 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-11 01:19:04,586 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-11 01:19:04,586 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-11 01:19:04,586 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-11 01:19:04,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-11 01:19:04,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-11 01:19:04,588 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-11 01:19:04,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-11 01:19:04,764 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-11 01:19:04,767 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:19:04 BoogieIcfgContainer [2020-02-11 01:19:04,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-11 01:19:04,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-11 01:19:04,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-11 01:19:04,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-11 01:19:04,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.02 01:19:04" (1/2) ... [2020-02-11 01:19:04,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8052c and model type example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.02 01:19:04, skipping insertion in model container [2020-02-11 01:19:04,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.02 01:19:04" (2/2) ... [2020-02-11 01:19:04,780 INFO L109 eAbstractionObserver]: Analyzing ICFG example_3.bpl [2020-02-11 01:19:04,790 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-11 01:19:04,801 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-11 01:19:04,802 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-11 01:19:04,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-02-11 01:19:04,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-11 01:19:04,963 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-11 01:19:04,963 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-11 01:19:04,963 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-02-11 01:19:04,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-11 01:19:04,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-11 01:19:04,964 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-11 01:19:04,964 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-11 01:19:04,976 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions [2020-02-11 01:19:05,033 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2020-02-11 01:19:05,034 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-11 01:19:05,039 INFO L76 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 24 events. 5/24 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs. 0/23 useless extension candidates. Maximal degree in co-relation 20. Up to 6 conditions per place. [2020-02-11 01:19:05,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions [2020-02-11 01:19:05,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions [2020-02-11 01:19:05,058 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2020-02-11 01:19:05,058 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-02-11 01:19:05,058 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:19:05,059 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:19:05,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-11 01:19:05,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:19:05,066 INFO L82 PathProgramCache]: Analyzing trace with hash -439738385, now seen corresponding path program 1 times [2020-02-11 01:19:05,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:19:05,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309828106] [2020-02-11 01:19:05,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:19:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:19:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:19:05,245 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309828106] [2020-02-11 01:19:05,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:19:05,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:19:05,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1665963947] [2020-02-11 01:19:05,252 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:19:05,268 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:19:05,295 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 54 states and 109 transitions. [2020-02-11 01:19:05,296 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:19:05,305 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2020-02-11 01:19:05,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:19:05,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:19:05,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:19:05,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:19:05,325 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 24 [2020-02-11 01:19:05,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions. Second operand 3 states. [2020-02-11 01:19:05,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:19:05,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 24 [2020-02-11 01:19:05,329 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:19:05,389 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-02-11 01:19:05,390 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-02-11 01:19:05,391 INFO L76 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 3/19 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs. 1/20 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-02-11 01:19:05,395 INFO L145 encePairwiseOnDemand]: 22/24 looper letters, 2 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2020-02-11 01:19:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:19:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:19:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2020-02-11 01:19:05,407 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-02-11 01:19:05,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2020-02-11 01:19:05,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2020-02-11 01:19:05,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:19:05,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2020-02-11 01:19:05,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:19:05,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:19:05,420 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:19:05,425 INFO L178 Difference]: Start difference. First operand has 23 places, 19 transitions. Second operand 3 states and 64 transitions. [2020-02-11 01:19:05,426 INFO L206 Difference]: Finished difference. Result has 25 places, 18 transitions [2020-02-11 01:19:05,431 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2020-02-11 01:19:05,432 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 25 places, 18 transitions [2020-02-11 01:19:05,451 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-02-11 01:19:05,451 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-02-11 01:19:05,452 INFO L76 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 19 events. 3/19 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs. 0/19 useless extension candidates. Maximal degree in co-relation 28. Up to 4 conditions per place. [2020-02-11 01:19:05,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 18 transitions [2020-02-11 01:19:05,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 18 transitions [2020-02-11 01:19:05,457 INFO L479 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions [2020-02-11 01:19:05,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:19:05,475 INFO L129 PetriNetUnfolder]: 3/18 cut-off events. [2020-02-11 01:19:05,476 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2020-02-11 01:19:05,476 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:19:05,476 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:19:05,476 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-11 01:19:05,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:19:05,477 INFO L82 PathProgramCache]: Analyzing trace with hash 902635529, now seen corresponding path program 1 times [2020-02-11 01:19:05,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:19:05,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894294198] [2020-02-11 01:19:05,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:19:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:19:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:19:05,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894294198] [2020-02-11 01:19:05,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:19:05,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-11 01:19:05,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [744813190] [2020-02-11 01:19:05,537 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:19:05,538 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:19:05,549 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 54 states and 109 transitions. [2020-02-11 01:19:05,550 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:19:05,558 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 6 times. [2020-02-11 01:19:05,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-11 01:19:05,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:19:05,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-11 01:19:05,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-11 01:19:05,568 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 24 [2020-02-11 01:19:05,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions. Second operand 3 states. [2020-02-11 01:19:05,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:19:05,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 24 [2020-02-11 01:19:05,570 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:19:05,591 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-02-11 01:19:05,591 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-02-11 01:19:05,592 INFO L76 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 13 events. 0/13 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs. 2/15 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2020-02-11 01:19:05,593 INFO L145 encePairwiseOnDemand]: 21/24 looper letters, 1 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2020-02-11 01:19:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-11 01:19:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-11 01:19:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2020-02-11 01:19:05,595 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-02-11 01:19:05,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2020-02-11 01:19:05,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2020-02-11 01:19:05,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:19:05,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2020-02-11 01:19:05,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-11 01:19:05,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-11 01:19:05,598 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-11 01:19:05,598 INFO L178 Difference]: Start difference. First operand has 25 places, 18 transitions. Second operand 3 states and 64 transitions. [2020-02-11 01:19:05,599 INFO L206 Difference]: Finished difference. Result has 27 places, 13 transitions [2020-02-11 01:19:05,599 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=13} [2020-02-11 01:19:05,600 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 27 places, 13 transitions [2020-02-11 01:19:05,606 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-02-11 01:19:05,606 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-02-11 01:19:05,607 INFO L76 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 13 events. 0/13 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs. 0/13 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2020-02-11 01:19:05,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 13 transitions [2020-02-11 01:19:05,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 13 transitions [2020-02-11 01:19:05,608 INFO L479 AbstractCegarLoop]: Abstraction has has 27 places, 13 transitions [2020-02-11 01:19:05,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-11 01:19:05,614 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-02-11 01:19:05,614 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2020-02-11 01:19:05,614 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-11 01:19:05,614 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-11 01:19:05,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-02-11 01:19:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-11 01:19:05,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1447175339, now seen corresponding path program 1 times [2020-02-11 01:19:05,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-11 01:19:05,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059980079] [2020-02-11 01:19:05,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-11 01:19:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-11 01:19:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-11 01:19:05,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059980079] [2020-02-11 01:19:05,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-11 01:19:05,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-02-11 01:19:05,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [477571476] [2020-02-11 01:19:05,810 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-02-11 01:19:05,811 INFO L189 pAbStrategyModuleMcr]: Started intersection. [2020-02-11 01:19:05,814 INFO L200 pAbStrategyModuleMcr]: Finished intersection with 54 states and 109 transitions. [2020-02-11 01:19:05,815 INFO L211 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2020-02-11 01:19:05,984 INFO L284 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 15 times. [2020-02-11 01:19:05,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-02-11 01:19:05,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-11 01:19:05,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-02-11 01:19:05,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-02-11 01:19:05,987 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 24 [2020-02-11 01:19:05,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 13 transitions. Second operand 11 states. [2020-02-11 01:19:05,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-11 01:19:05,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 24 [2020-02-11 01:19:05,987 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-11 01:19:06,261 INFO L129 PetriNetUnfolder]: 10/40 cut-off events. [2020-02-11 01:19:06,261 INFO L130 PetriNetUnfolder]: For 22/24 co-relation queries the response was YES. [2020-02-11 01:19:06,262 INFO L76 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 40 events. 10/40 cut-off events. For 22/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 118 event pairs. 3/43 useless extension candidates. Maximal degree in co-relation 72. Up to 7 conditions per place. [2020-02-11 01:19:06,263 INFO L145 encePairwiseOnDemand]: 19/24 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2020-02-11 01:19:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-02-11 01:19:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-02-11 01:19:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2020-02-11 01:19:06,266 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2020-02-11 01:19:06,266 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 186 transitions. [2020-02-11 01:19:06,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 186 transitions. [2020-02-11 01:19:06,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-11 01:19:06,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 186 transitions. [2020-02-11 01:19:06,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-02-11 01:19:06,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-02-11 01:19:06,270 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-02-11 01:19:06,270 INFO L178 Difference]: Start difference. First operand has 27 places, 13 transitions. Second operand 11 states and 186 transitions. [2020-02-11 01:19:06,270 INFO L206 Difference]: Finished difference. Result has 37 places, 0 transitions [2020-02-11 01:19:06,270 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2020-02-11 01:19:06,270 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 37 places, 0 transitions [2020-02-11 01:19:06,271 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-11 01:19:06,271 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-11 01:19:06,271 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-02-11 01:19:06,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 0 transitions [2020-02-11 01:19:06,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions [2020-02-11 01:19:06,272 INFO L479 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions [2020-02-11 01:19:06,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-02-11 01:19:06,272 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2020-02-11 01:19:06,272 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-02-11 01:19:06,278 INFO L202 PluginConnector]: Adding new model example_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.02 01:19:06 BasicIcfg [2020-02-11 01:19:06,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-11 01:19:06,281 INFO L168 Benchmark]: Toolchain (without parser) took 1839.48 ms. Allocated memory was 136.3 MB in the beginning and 169.9 MB in the end (delta: 33.6 MB). Free memory was 118.2 MB in the beginning and 92.9 MB in the end (delta: 25.3 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:06,282 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-11 01:19:06,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.86 ms. Allocated memory is still 136.3 MB. Free memory was 118.0 MB in the beginning and 116.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:06,284 INFO L168 Benchmark]: Boogie Preprocessor took 20.65 ms. Allocated memory is still 136.3 MB. Free memory was 116.4 MB in the beginning and 115.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:06,285 INFO L168 Benchmark]: RCFGBuilder took 266.02 ms. Allocated memory is still 136.3 MB. Free memory was 115.3 MB in the beginning and 105.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:06,286 INFO L168 Benchmark]: TraceAbstraction took 1507.57 ms. Allocated memory was 136.3 MB in the beginning and 169.9 MB in the end (delta: 33.6 MB). Free memory was 105.0 MB in the beginning and 92.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-02-11 01:19:06,290 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 0.17 ms. Allocated memory is still 136.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.86 ms. Allocated memory is still 136.3 MB. Free memory was 118.0 MB in the beginning and 116.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.65 ms. Allocated memory is still 136.3 MB. Free memory was 116.4 MB in the beginning and 115.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.02 ms. Allocated memory is still 136.3 MB. Free memory was 115.3 MB in the beginning and 105.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1507.57 ms. Allocated memory was 136.3 MB in the beginning and 169.9 MB in the end (delta: 33.6 MB). Free memory was 105.0 MB in the beginning and 92.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. Result: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 21 SDslu, 24 SDs, 0 SdLazy, 41 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 37 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...