/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 22:26:57,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 22:26:57,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 22:26:57,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 22:26:57,929 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-FA-NoLbe.epf [2021-06-05 22:26:57,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 22:26:57,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 22:26:57,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 22:26:57,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 22:26:57,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 22:26:57,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 22:26:57,968 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 22:26:57,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 22:26:57,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 22:26:57,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 22:26:57,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 22:26:57,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 22:26:57,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 22:26:57,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 22:26:57,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 22:26:57,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 22:26:57,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 22:26:57,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 22:26:57,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 22:26:57,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 22:26:57,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 22:26:57,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 22:26:57,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 22:26:57,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:26:57,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 22:26:57,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 22:26:57,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 22:26:57,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 22:26:57,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 22:26:57,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 22:26:57,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 22:26:57,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 22:26:58,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 22:26:58,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 22:26:58,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 22:26:58,309 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 22:26:58,310 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 22:26:58,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl [2021-06-05 22:26:58,311 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3.wvr.bpl' [2021-06-05 22:26:58,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 22:26:58,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 22:26:58,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 22:26:58,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 22:26:58,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 22:26:58,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 22:26:58,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 22:26:58,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 22:26:58,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 22:26:58,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/1) ... [2021-06-05 22:26:58,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 22:26:58,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 22:26:58,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 22:26:58,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 22:26:58,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (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 [2021-06-05 22:26:58,476 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 22:26:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 22:26:58,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 22:26:58,477 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 22:26:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 22:26:58,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 22:26:58,477 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 22:26:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 22:26:58,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 22:26:58,479 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 22:26:58,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 22:26:58,644 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 22:26:58,655 INFO L202 PluginConnector]: Adding new model misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:26:58 BoogieIcfgContainer [2021-06-05 22:26:58,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 22:26:58,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 22:26:58,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 22:26:58,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 22:26:58,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:26:58" (1/2) ... [2021-06-05 22:26:58,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400b7a1 and model type misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:26:58, skipping insertion in model container [2021-06-05 22:26:58,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:26:58" (2/2) ... [2021-06-05 22:26:58,662 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3.wvr.bpl [2021-06-05 22:26:58,666 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 22:26:58,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 22:26:58,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 22:26:58,667 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 22:26:58,719 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 22:26:58,737 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 22:26:58,761 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:26:58,761 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:26:58,761 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:26:58,761 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:26:58,761 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:26:58,761 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:26:58,761 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:26:58,762 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 22:26:58,774 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 35 transitions, 86 flow [2021-06-05 22:26:58,809 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 106 states, 104 states have (on average 2.548076923076923) internal successors, (265), 105 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 104 states have (on average 2.548076923076923) internal successors, (265), 105 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 22:26:58,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:58,826 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:58,827 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:26:58,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:58,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1716416352, now seen corresponding path program 1 times [2021-06-05 22:26:58,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:58,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392503809] [2021-06-05 22:26:58,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:58,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:58,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392503809] [2021-06-05 22:26:58,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392503809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:58,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:58,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 22:26:58,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387253598] [2021-06-05 22:26:58,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:26:58,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:58,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:26:58,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:26:58,990 INFO L87 Difference]: Start difference. First operand has 106 states, 104 states have (on average 2.548076923076923) internal successors, (265), 105 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:59,021 INFO L93 Difference]: Finished difference Result 114 states and 286 transitions. [2021-06-05 22:26:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:26:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-06-05 22:26:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:59,045 INFO L225 Difference]: With dead ends: 114 [2021-06-05 22:26:59,046 INFO L226 Difference]: Without dead ends: 114 [2021-06-05 22:26:59,047 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:26:59,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-06-05 22:26:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-06-05 22:26:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.5309734513274336) internal successors, (286), 113 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 286 transitions. [2021-06-05 22:26:59,107 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 286 transitions. Word has length 11 [2021-06-05 22:26:59,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:59,107 INFO L482 AbstractCegarLoop]: Abstraction has 114 states and 286 transitions. [2021-06-05 22:26:59,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 286 transitions. [2021-06-05 22:26:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 22:26:59,110 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:59,111 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:26:59,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 22:26:59,111 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:26:59,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:59,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1625753287, now seen corresponding path program 1 times [2021-06-05 22:26:59,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:59,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488564560] [2021-06-05 22:26:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:59,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:59,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488564560] [2021-06-05 22:26:59,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488564560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:59,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:59,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 22:26:59,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603556861] [2021-06-05 22:26:59,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 22:26:59,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:59,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 22:26:59,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:26:59,168 INFO L87 Difference]: Start difference. First operand 114 states and 286 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:59,189 INFO L93 Difference]: Finished difference Result 125 states and 311 transitions. [2021-06-05 22:26:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 22:26:59,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 22:26:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:59,193 INFO L225 Difference]: With dead ends: 125 [2021-06-05 22:26:59,193 INFO L226 Difference]: Without dead ends: 125 [2021-06-05 22:26:59,194 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 22:26:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-06-05 22:26:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-06-05 22:26:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.5080645161290325) internal successors, (311), 124 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 311 transitions. [2021-06-05 22:26:59,208 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 311 transitions. Word has length 17 [2021-06-05 22:26:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:59,208 INFO L482 AbstractCegarLoop]: Abstraction has 125 states and 311 transitions. [2021-06-05 22:26:59,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 311 transitions. [2021-06-05 22:26:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-05 22:26:59,209 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:59,209 INFO L554 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] [2021-06-05 22:26:59,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 22:26:59,210 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:26:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash -601515134, now seen corresponding path program 1 times [2021-06-05 22:26:59,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:59,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55193055] [2021-06-05 22:26:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:26:59,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:59,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55193055] [2021-06-05 22:26:59,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55193055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:59,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:59,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:26:59,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794955442] [2021-06-05 22:26:59,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 22:26:59,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 22:26:59,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 22:26:59,260 INFO L87 Difference]: Start difference. First operand 125 states and 311 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:59,293 INFO L93 Difference]: Finished difference Result 169 states and 389 transitions. [2021-06-05 22:26:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 22:26:59,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-06-05 22:26:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:59,298 INFO L225 Difference]: With dead ends: 169 [2021-06-05 22:26:59,298 INFO L226 Difference]: Without dead ends: 169 [2021-06-05 22:26:59,298 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 22:26:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-06-05 22:26:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-06-05 22:26:59,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.3154761904761907) internal successors, (389), 168 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 389 transitions. [2021-06-05 22:26:59,316 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 389 transitions. Word has length 23 [2021-06-05 22:26:59,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:59,320 INFO L482 AbstractCegarLoop]: Abstraction has 169 states and 389 transitions. [2021-06-05 22:26:59,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 389 transitions. [2021-06-05 22:26:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 22:26:59,322 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:59,322 INFO L554 BasicCegarLoop]: trace histogram [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] [2021-06-05 22:26:59,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 22:26:59,322 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:26:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash -443005341, now seen corresponding path program 1 times [2021-06-05 22:26:59,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:59,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63841582] [2021-06-05 22:26:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 22:26:59,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:59,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63841582] [2021-06-05 22:26:59,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63841582] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:26:59,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:26:59,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 22:26:59,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670267763] [2021-06-05 22:26:59,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 22:26:59,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:59,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 22:26:59,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 22:26:59,349 INFO L87 Difference]: Start difference. First operand 169 states and 389 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:59,375 INFO L93 Difference]: Finished difference Result 229 states and 483 transitions. [2021-06-05 22:26:59,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 22:26:59,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 22:26:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:59,380 INFO L225 Difference]: With dead ends: 229 [2021-06-05 22:26:59,380 INFO L226 Difference]: Without dead ends: 229 [2021-06-05 22:26:59,380 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 22:26:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-06-05 22:26:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-06-05 22:26:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.1184210526315788) internal successors, (483), 228 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 483 transitions. [2021-06-05 22:26:59,389 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 483 transitions. Word has length 28 [2021-06-05 22:26:59,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:59,390 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 483 transitions. [2021-06-05 22:26:59,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 483 transitions. [2021-06-05 22:26:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-06-05 22:26:59,392 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:26:59,392 INFO L554 BasicCegarLoop]: trace histogram [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] [2021-06-05 22:26:59,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 22:26:59,392 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 22:26:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:26:59,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2113028016, now seen corresponding path program 1 times [2021-06-05 22:26:59,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:26:59,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075398180] [2021-06-05 22:26:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:26:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 22:26:59,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:26:59,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075398180] [2021-06-05 22:26:59,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075398180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:26:59,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572842540] [2021-06-05 22:26:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 22:26:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:26:59,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-05 22:26:59,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 22:26:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 22:26:59,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572842540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 22:26:59,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 22:26:59,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-06-05 22:26:59,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724488757] [2021-06-05 22:26:59,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:26:59,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:26:59,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:26:59,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:26:59,844 INFO L87 Difference]: Start difference. First operand 229 states and 483 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:26:59,871 INFO L93 Difference]: Finished difference Result 227 states and 481 transitions. [2021-06-05 22:26:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:26:59,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-06-05 22:26:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:26:59,872 INFO L225 Difference]: With dead ends: 227 [2021-06-05 22:26:59,872 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 22:26:59,873 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:26:59,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 22:26:59,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 22:26:59,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 22:26:59,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-06-05 22:26:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:26:59,873 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 22:26:59,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:26:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 22:26:59,874 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:27:00,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 22:27:00,097 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 22:27:00,098 INFO L202 PluginConnector]: Adding new model misc-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:27:00 BasicIcfg [2021-06-05 22:27:00,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 22:27:00,099 INFO L168 Benchmark]: Toolchain (without parser) took 1746.76 ms. Allocated memory is still 373.3 MB. Free memory was 353.0 MB in the beginning and 336.6 MB in the end (delta: 16.5 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.0 GB. [2021-06-05 22:27:00,099 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 373.3 MB. Free memory was 354.1 MB in the beginning and 354.0 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:27:00,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 373.3 MB. Free memory was 352.9 MB in the beginning and 351.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:27:00,100 INFO L168 Benchmark]: Boogie Preprocessor took 17.90 ms. Allocated memory is still 373.3 MB. Free memory was 351.4 MB in the beginning and 350.5 MB in the end (delta: 941.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 22:27:00,100 INFO L168 Benchmark]: RCFGBuilder took 255.86 ms. Allocated memory is still 373.3 MB. Free memory was 350.5 MB in the beginning and 339.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 22:27:00,101 INFO L168 Benchmark]: TraceAbstraction took 1441.39 ms. Allocated memory is still 373.3 MB. Free memory was 338.8 MB in the beginning and 336.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.0 GB. [2021-06-05 22:27:00,102 INFO L339 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 0.13 ms. Allocated memory is still 373.3 MB. Free memory was 354.1 MB in the beginning and 354.0 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.07 ms. Allocated memory is still 373.3 MB. Free memory was 352.9 MB in the beginning and 351.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.90 ms. Allocated memory is still 373.3 MB. Free memory was 351.4 MB in the beginning and 350.5 MB in the end (delta: 941.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 255.86 ms. Allocated memory is still 373.3 MB. Free memory was 350.5 MB in the beginning and 339.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1441.39 ms. Allocated memory is still 373.3 MB. Free memory was 338.8 MB in the beginning and 336.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 48 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1336.9ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 22.8ms, AutomataDifference: 204.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 48.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 195 SDtfs, 136 SDslu, 275 SDs, 0 SdLazy, 67 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 89.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 60.0ms SatisfiabilityAnalysisTime, 516.2ms InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 513 SizeOfPredicates, 1 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 12/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...