/usr/bin/java -Xmx8000000000 -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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:00:37,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:00:37,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:00:37,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 23:00:37,265 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-Delay.epf [2021-07-09 23:00:37,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:00:37,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:00:37,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:00:37,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:00:37,293 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:00:37,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:00:37,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:00:37,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:00:37,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:00:37,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:00:37,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:00:37,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:00:37,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:00:37,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:00:37,296 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:00:37,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:00:37,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:00:37,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:00:37,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:00:37,768 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:00:37,768 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:00:37,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-07-09 23:00:37,770 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-07-09 23:00:37,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:00:37,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:00:37,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:00:37,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:00:37,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:00:37,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:00:37,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:00:37,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:00:37,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:00:37,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/1) ... [2021-07-09 23:00:37,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:00:37,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:00:37,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:00:37,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:00:37,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (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 [2021-07-09 23:00:37,906 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:00:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:00:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:00:37,908 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:00:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:00:37,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:00:37,908 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:00:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:00:37,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:00:37,909 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 23:00:38,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:00:38,026 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:00:38,027 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:00:38 BoogieIcfgContainer [2021-07-09 23:00:38,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:00:38,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:00:38,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:00:38,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:00:38,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:00:37" (1/2) ... [2021-07-09 23:00:38,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48658f92 and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:00:38, skipping insertion in model container [2021-07-09 23:00:38,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:00:38" (2/2) ... [2021-07-09 23:00:38,032 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-07-09 23:00:38,036 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:00:38,036 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:00:38,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:00:38,036 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:00:38,080 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 23:00:38,112 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 23:00:38,124 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:00:38,124 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:00:38,124 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:00:38,124 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:00:38,124 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:00:38,124 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:00:38,124 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:00:38,124 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:00:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 126 states have (on average 1.626984126984127) internal successors, (205), 147 states have internal predecessors, (205), 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) [2021-07-09 23:00:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-09 23:00:38,258 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:38,258 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:38,259 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:38,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1810780242, now seen corresponding path program 1 times [2021-07-09 23:00:38,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:38,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181305026] [2021-07-09 23:00:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:38,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:38,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:38,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:38,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181305026] [2021-07-09 23:00:38,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181305026] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:38,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:38,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:00:38,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293990620] [2021-07-09 23:00:38,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:00:38,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:38,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:00:38,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:38,446 INFO L87 Difference]: Start difference. First operand has 148 states, 126 states have (on average 1.626984126984127) internal successors, (205), 147 states have internal predecessors, (205), 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 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 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) [2021-07-09 23:00:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:38,548 INFO L93 Difference]: Finished difference Result 198 states and 261 transitions. [2021-07-09 23:00:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:00:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 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 27 [2021-07-09 23:00:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:38,555 INFO L225 Difference]: With dead ends: 198 [2021-07-09 23:00:38,555 INFO L226 Difference]: Without dead ends: 121 [2021-07-09 23:00:38,556 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 74.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-07-09 23:00:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 96. [2021-07-09 23:00:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.5368421052631578) internal successors, (146), 95 states have internal predecessors, (146), 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) [2021-07-09 23:00:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 146 transitions. [2021-07-09 23:00:38,616 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 146 transitions. Word has length 27 [2021-07-09 23:00:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:38,617 INFO L482 AbstractCegarLoop]: Abstraction has 96 states and 146 transitions. [2021-07-09 23:00:38,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 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) [2021-07-09 23:00:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 146 transitions. [2021-07-09 23:00:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-09 23:00:38,618 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:38,618 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:38,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:00:38,618 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:38,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:38,619 INFO L82 PathProgramCache]: Analyzing trace with hash -777792618, now seen corresponding path program 2 times [2021-07-09 23:00:38,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:38,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663682498] [2021-07-09 23:00:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:38,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-07-09 23:00:38,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:38,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:38,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663682498] [2021-07-09 23:00:38,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663682498] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:38,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:38,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-09 23:00:38,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541222117] [2021-07-09 23:00:38,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 23:00:38,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:38,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 23:00:38,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-09 23:00:38,731 INFO L87 Difference]: Start difference. First operand 96 states and 146 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 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) [2021-07-09 23:00:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:38,851 INFO L93 Difference]: Finished difference Result 119 states and 173 transitions. [2021-07-09 23:00:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 23:00:38,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 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 27 [2021-07-09 23:00:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:38,855 INFO L225 Difference]: With dead ends: 119 [2021-07-09 23:00:38,855 INFO L226 Difference]: Without dead ends: 86 [2021-07-09 23:00:38,856 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-07-09 23:00:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-07-09 23:00:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2021-07-09 23:00:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.445945945945946) internal successors, (107), 74 states have internal predecessors, (107), 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) [2021-07-09 23:00:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 107 transitions. [2021-07-09 23:00:38,869 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 107 transitions. Word has length 27 [2021-07-09 23:00:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:38,869 INFO L482 AbstractCegarLoop]: Abstraction has 75 states and 107 transitions. [2021-07-09 23:00:38,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 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) [2021-07-09 23:00:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 107 transitions. [2021-07-09 23:00:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-09 23:00:38,872 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:38,872 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:38,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:00:38,873 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:38,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1376255450, now seen corresponding path program 3 times [2021-07-09 23:00:38,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:38,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007803186] [2021-07-09 23:00:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:38,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:38,943 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-07-09 23:00:38,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:38,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:38,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:38,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:38,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:38,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007803186] [2021-07-09 23:00:38,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007803186] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:38,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:38,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 23:00:38,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330320880] [2021-07-09 23:00:38,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 23:00:38,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:38,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 23:00:38,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:38,963 INFO L87 Difference]: Start difference. First operand 75 states and 107 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-07-09 23:00:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:39,008 INFO L93 Difference]: Finished difference Result 119 states and 173 transitions. [2021-07-09 23:00:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 23:00:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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 27 [2021-07-09 23:00:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:39,010 INFO L225 Difference]: With dead ends: 119 [2021-07-09 23:00:39,010 INFO L226 Difference]: Without dead ends: 92 [2021-07-09 23:00:39,011 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-07-09 23:00:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 64. [2021-07-09 23:00:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 63 states have internal predecessors, (92), 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) [2021-07-09 23:00:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 92 transitions. [2021-07-09 23:00:39,018 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 92 transitions. Word has length 27 [2021-07-09 23:00:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:39,019 INFO L482 AbstractCegarLoop]: Abstraction has 64 states and 92 transitions. [2021-07-09 23:00:39,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-07-09 23:00:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2021-07-09 23:00:39,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-09 23:00:39,020 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:39,020 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:39,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:00:39,020 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:39,022 INFO L82 PathProgramCache]: Analyzing trace with hash 282500260, now seen corresponding path program 4 times [2021-07-09 23:00:39,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:39,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197869725] [2021-07-09 23:00:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:39,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:39,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:39,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:39,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:39,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197869725] [2021-07-09 23:00:39,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197869725] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:39,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:39,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:00:39,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69674790] [2021-07-09 23:00:39,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:00:39,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:39,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:00:39,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:00:39,058 INFO L87 Difference]: Start difference. First operand 64 states and 92 transitions. Second operand has 3 states, 3 states have (on average 9.0) 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) [2021-07-09 23:00:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:39,062 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2021-07-09 23:00:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:00:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) 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 27 [2021-07-09 23:00:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:39,063 INFO L225 Difference]: With dead ends: 60 [2021-07-09 23:00:39,063 INFO L226 Difference]: Without dead ends: 58 [2021-07-09 23:00:39,063 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:00:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-07-09 23:00:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-07-09 23:00:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 57 states have internal predecessors, (82), 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) [2021-07-09 23:00:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 82 transitions. [2021-07-09 23:00:39,067 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 82 transitions. Word has length 27 [2021-07-09 23:00:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:39,068 INFO L482 AbstractCegarLoop]: Abstraction has 58 states and 82 transitions. [2021-07-09 23:00:39,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) 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) [2021-07-09 23:00:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 82 transitions. [2021-07-09 23:00:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-09 23:00:39,069 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:39,069 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:39,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 23:00:39,070 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:39,070 INFO L82 PathProgramCache]: Analyzing trace with hash -267692158, now seen corresponding path program 5 times [2021-07-09 23:00:39,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:39,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103811182] [2021-07-09 23:00:39,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:39,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:39,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:39,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:39,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:39,140 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-07-09 23:00:39,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:39,147 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-07-09 23:00:39,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:39,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:39,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:39,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103811182] [2021-07-09 23:00:39,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103811182] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:39,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:39,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 23:00:39,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880884416] [2021-07-09 23:00:39,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 23:00:39,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:39,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 23:00:39,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:39,151 INFO L87 Difference]: Start difference. First operand 58 states and 82 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-07-09 23:00:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:39,173 INFO L93 Difference]: Finished difference Result 71 states and 100 transitions. [2021-07-09 23:00:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 23:00:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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 27 [2021-07-09 23:00:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:39,177 INFO L225 Difference]: With dead ends: 71 [2021-07-09 23:00:39,177 INFO L226 Difference]: Without dead ends: 57 [2021-07-09 23:00:39,178 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-07-09 23:00:39,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-07-09 23:00:39,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 56 states have internal predecessors, (80), 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) [2021-07-09 23:00:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-07-09 23:00:39,182 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 27 [2021-07-09 23:00:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:39,183 INFO L482 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-07-09 23:00:39,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-07-09 23:00:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-07-09 23:00:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-09 23:00:39,184 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:00:39,184 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:00:39,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 23:00:39,185 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:00:39,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:00:39,185 INFO L82 PathProgramCache]: Analyzing trace with hash -329201322, now seen corresponding path program 6 times [2021-07-09 23:00:39,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:00:39,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245093528] [2021-07-09 23:00:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:00:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:00:39,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-07-09 23:00:39,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:39,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:39,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-09 23:00:39,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-09 23:00:39,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:39,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:00:39,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:00:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:00:39,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:00:39,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245093528] [2021-07-09 23:00:39,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245093528] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:00:39,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:00:39,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-09 23:00:39,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578437896] [2021-07-09 23:00:39,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 23:00:39,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:00:39,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 23:00:39,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:39,251 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-07-09 23:00:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:00:39,278 INFO L93 Difference]: Finished difference Result 41 states and 59 transitions. [2021-07-09 23:00:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 23:00:39,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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 27 [2021-07-09 23:00:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:00:39,279 INFO L225 Difference]: With dead ends: 41 [2021-07-09 23:00:39,279 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:00:39,279 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-07-09 23:00:39,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:00:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:00:39,280 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) [2021-07-09 23:00:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:00:39,280 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-07-09 23:00:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:00:39,280 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:00:39,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 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) [2021-07-09 23:00:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:00:39,280 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:00:39,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 23:00:39,281 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:00:39,283 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:00:39 BasicIcfg [2021-07-09 23:00:39,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:00:39,284 INFO L168 Benchmark]: Toolchain (without parser) took 1487.97 ms. Allocated memory is still 176.2 MB. Free memory was 155.5 MB in the beginning and 97.1 MB in the end (delta: 58.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:00:39,284 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.38 ms. Allocated memory is still 176.2 MB. Free memory is still 156.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:00:39,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 176.2 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:00:39,284 INFO L168 Benchmark]: Boogie Preprocessor took 12.29 ms. Allocated memory is still 176.2 MB. Free memory was 154.1 MB in the beginning and 153.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:00:39,284 INFO L168 Benchmark]: RCFGBuilder took 167.97 ms. Allocated memory is still 176.2 MB. Free memory was 153.0 MB in the beginning and 141.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:00:39,285 INFO L168 Benchmark]: TraceAbstraction took 1254.37 ms. Allocated memory is still 176.2 MB. Free memory was 141.3 MB in the beginning and 97.1 MB in the end (delta: 44.2 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2021-07-09 23:00:39,286 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 0.38 ms. Allocated memory is still 176.2 MB. Free memory is still 156.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.38 ms. Allocated memory is still 176.2 MB. Free memory was 155.5 MB in the beginning and 154.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.29 ms. Allocated memory is still 176.2 MB. Free memory was 154.1 MB in the beginning and 153.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 167.97 ms. Allocated memory is still 176.2 MB. Free memory was 153.0 MB in the beginning and 141.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1254.37 ms. Allocated memory is still 176.2 MB. Free memory was 141.3 MB in the beginning and 97.1 MB in the end (delta: 44.2 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 120, positive: 106, positive conditional: 106, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 120, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 120, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 120, positive: 102, positive conditional: 0, positive unconditional: 102, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 48, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 120, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 120, unknown conditional: 0, unknown unconditional: 120] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Independence queries for same thread: 0 - PositiveResult [Line: 54]: 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, 56 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1158.0ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 15.9ms, AutomataDifference: 355.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 126.2ms, PartialOrderReductionTime: 117.2ms, HoareTripleCheckerStatistics: 191 SDtfs, 159 SDslu, 464 SDs, 0 SdLazy, 180 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 206.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 73.4ms AutomataMinimizationTime, 6 MinimizatonAttempts, 64 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 98.8ms SatisfiabilityAnalysisTime, 372.1ms InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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...