/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/popl20-bad/threaded-sum-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 01:38:03,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 01:38:03,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 01:38:03,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 01:38:03,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 01:38:03,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 01:38:03,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 01:38:03,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 01:38:03,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 01:38:03,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 01:38:03,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 01:38:03,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 01:38:03,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 01:38:03,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 01:38:03,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 01:38:03,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 01:38:03,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 01:38:03,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 01:38:03,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 01:38:03,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 01:38:03,838 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 [2021-07-14 01:38:03,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 01:38:03,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 01:38:03,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 01:38:03,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 01:38:03,897 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 01:38:03,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 01:38:03,898 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 01:38:03,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 01:38:03,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 01:38:03,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 01:38:03,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 01:38:03,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 01:38:03,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 01:38:03,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 01:38:03,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 01:38:03,900 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 01:38:03,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 01:38:03,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 01:38:03,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 01:38:03,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 01:38:03,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 01:38:03,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:38:03,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 01:38:03,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 01:38:03,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 01:38:03,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 01:38:03,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 01:38:03,902 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 01:38:03,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 01:38:03,902 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 01:38:03,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 01:38:04,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 01:38:04,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 01:38:04,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 01:38:04,221 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 01:38:04,221 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 01:38:04,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl [2021-07-14 01:38:04,223 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/threaded-sum-2.wvr.bpl' [2021-07-14 01:38:04,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 01:38:04,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 01:38:04,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 01:38:04,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 01:38:04,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 01:38:04,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 01:38:04,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 01:38:04,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 01:38:04,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 01:38:04,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... [2021-07-14 01:38:04,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 01:38:04,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 01:38:04,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 01:38:04,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 01:38:04,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 01:38:04,355 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 01:38:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 01:38:04,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 01:38:04,357 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 01:38:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 01:38:04,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 01:38:04,357 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 01:38:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 01:38:04,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 01:38:04,358 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 01:38:04,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 01:38:04,564 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 01:38:04,565 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:38:04 BoogieIcfgContainer [2021-07-14 01:38:04,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 01:38:04,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 01:38:04,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 01:38:04,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 01:38:04,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 01:38:04" (1/2) ... [2021-07-14 01:38:04,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a06915 and model type threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:38:04, skipping insertion in model container [2021-07-14 01:38:04,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:38:04" (2/2) ... [2021-07-14 01:38:04,571 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-2.wvr.bpl [2021-07-14 01:38:04,576 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 01:38:04,576 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 01:38:04,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 01:38:04,577 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 01:38:04,602 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-14 01:38:04,621 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-14 01:38:04,637 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 01:38:04,637 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 01:38:04,637 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 01:38:04,637 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 01:38:04,637 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 01:38:04,637 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 01:38:04,638 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 01:38:04,638 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 01:38:04,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 37 states have internal predecessors, (46), 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) [2021-07-14 01:38:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-14 01:38:04,719 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:38:04,719 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:38:04,719 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:38:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:38:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1367987228, now seen corresponding path program 1 times [2021-07-14 01:38:04,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:38:04,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902167145] [2021-07-14 01:38:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:38:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:38:04,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:04,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:38:04,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:04,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-14 01:38:04,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:04,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:38:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 01:38:04,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:38:04,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902167145] [2021-07-14 01:38:04,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902167145] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:38:04,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:38:04,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 01:38:04,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061598089] [2021-07-14 01:38:04,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 01:38:04,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:38:04,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 01:38:04,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:38:04,936 INFO L87 Difference]: Start difference. First operand has 38 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 37 states have internal predecessors, (46), 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 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-07-14 01:38:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:38:04,988 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-07-14 01:38:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 01:38:04,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-07-14 01:38:04,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:38:04,999 INFO L225 Difference]: With dead ends: 38 [2021-07-14 01:38:04,999 INFO L226 Difference]: Without dead ends: 28 [2021-07-14 01:38:05,000 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:38:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-07-14 01:38:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-07-14 01:38:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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) [2021-07-14 01:38:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-07-14 01:38:05,029 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 18 [2021-07-14 01:38:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:38:05,030 INFO L482 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-07-14 01:38:05,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-07-14 01:38:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2021-07-14 01:38:05,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-14 01:38:05,031 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:38:05,031 INFO L508 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:38:05,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 01:38:05,032 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:38:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:38:05,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1653154376, now seen corresponding path program 2 times [2021-07-14 01:38:05,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:38:05,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587743784] [2021-07-14 01:38:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:38:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:38:05,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:05,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:38:05,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:05,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:38:05,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:05,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:38:05,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:05,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:38:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 01:38:05,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:38:05,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587743784] [2021-07-14 01:38:05,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587743784] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:38:05,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:38:05,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 01:38:05,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590088039] [2021-07-14 01:38:05,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 01:38:05,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:38:05,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 01:38:05,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-14 01:38:05,103 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-07-14 01:38:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:38:05,143 INFO L93 Difference]: Finished difference Result 44 states and 64 transitions. [2021-07-14 01:38:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 01:38:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2021-07-14 01:38:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:38:05,146 INFO L225 Difference]: With dead ends: 44 [2021-07-14 01:38:05,146 INFO L226 Difference]: Without dead ends: 44 [2021-07-14 01:38:05,147 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-14 01:38:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-07-14 01:38:05,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-07-14 01:38:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.525) internal successors, (61), 40 states have internal predecessors, (61), 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) [2021-07-14 01:38:05,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 61 transitions. [2021-07-14 01:38:05,161 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 61 transitions. Word has length 21 [2021-07-14 01:38:05,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:38:05,161 INFO L482 AbstractCegarLoop]: Abstraction has 41 states and 61 transitions. [2021-07-14 01:38:05,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-07-14 01:38:05,161 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 61 transitions. [2021-07-14 01:38:05,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-14 01:38:05,162 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 01:38:05,162 INFO L508 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 01:38:05,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 01:38:05,162 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 01:38:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 01:38:05,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1902213642, now seen corresponding path program 1 times [2021-07-14 01:38:05,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 01:38:05,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782959309] [2021-07-14 01:38:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 01:38:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 01:38:05,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:05,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:38:05,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:05,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 01:38:05,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 01:38:05,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 01:38:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 01:38:05,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 01:38:05,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782959309] [2021-07-14 01:38:05,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782959309] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 01:38:05,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 01:38:05,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 01:38:05,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923841028] [2021-07-14 01:38:05,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 01:38:05,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 01:38:05,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 01:38:05,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:38:05,187 INFO L87 Difference]: Start difference. First operand 41 states and 61 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) 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) [2021-07-14 01:38:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 01:38:05,193 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2021-07-14 01:38:05,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 01:38:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) 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 [2021-07-14 01:38:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 01:38:05,194 INFO L225 Difference]: With dead ends: 30 [2021-07-14 01:38:05,194 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 01:38:05,195 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 01:38:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 01:38:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 01:38:05,195 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) [2021-07-14 01:38:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 01:38:05,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-07-14 01:38:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 01:38:05,196 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 01:38:05,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) 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) [2021-07-14 01:38:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 01:38:05,196 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 01:38:05,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 01:38:05,198 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 01:38:05,199 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 01:38:05 BasicIcfg [2021-07-14 01:38:05,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 01:38:05,201 INFO L168 Benchmark]: Toolchain (without parser) took 952.83 ms. Allocated memory is still 248.5 MB. Free memory was 229.5 MB in the beginning and 211.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 8.0 GB. [2021-07-14 01:38:05,201 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.46 ms. Allocated memory is still 248.5 MB. Free memory is still 230.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 01:38:05,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.67 ms. Allocated memory is still 248.5 MB. Free memory was 229.4 MB in the beginning and 228.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 01:38:05,202 INFO L168 Benchmark]: Boogie Preprocessor took 13.09 ms. Allocated memory is still 248.5 MB. Free memory was 228.0 MB in the beginning and 227.1 MB in the end (delta: 924.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 01:38:05,202 INFO L168 Benchmark]: RCFGBuilder took 276.58 ms. Allocated memory is still 248.5 MB. Free memory was 227.0 MB in the beginning and 215.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-14 01:38:05,203 INFO L168 Benchmark]: TraceAbstraction took 632.71 ms. Allocated memory is still 248.5 MB. Free memory was 214.8 MB in the beginning and 211.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.9 MB. Max. memory is 8.0 GB. [2021-07-14 01:38:05,205 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 0.46 ms. Allocated memory is still 248.5 MB. Free memory is still 230.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.67 ms. Allocated memory is still 248.5 MB. Free memory was 229.4 MB in the beginning and 228.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.09 ms. Allocated memory is still 248.5 MB. Free memory was 228.0 MB in the beginning and 227.1 MB in the end (delta: 924.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.58 ms. Allocated memory is still 248.5 MB. Free memory was 227.0 MB in the beginning and 215.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 632.71 ms. Allocated memory is still 248.5 MB. Free memory was 214.8 MB in the beginning and 211.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.9 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: 36, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 29, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 29, unknown conditional: 0, unknown unconditional: 29] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Independence queries for same thread: 7 - PositiveResult [Line: 55]: 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, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 561.9ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 8.7ms, AutomataDifference: 135.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 73.9ms, PartialOrderReductionTime: 61.4ms, HoareTripleCheckerStatistics: 46 SDtfs, 9 SDslu, 40 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.5ms SsaConstructionTime, 35.7ms SatisfiabilityAnalysisTime, 121.9ms InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 12/12 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...