/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 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 23:32:18,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 23:32:18,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 23:32:18,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 23:32:18,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 23:32:18,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 23:32:18,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 23:32:18,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 23:32:18,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 23:32:18,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 23:32:18,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 23:32:18,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 23:32:18,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 23:32:18,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 23:32:18,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 23:32:18,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 23:32:18,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 23:32:18,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 23:32:18,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 23:32:18,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 23:32:18,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 23:32:18,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 23:32:18,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 23:32:18,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 23:32:18,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 23:32:18,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 23:32:18,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 23:32:18,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 23:32:18,301 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 23:32:18,337 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 23:32:18,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 23:32:18,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 23:32:18,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 23:32:18,340 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 23:32:18,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 23:32:18,340 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 23:32:18,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 23:32:18,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 23:32:18,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 23:32:18,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 23:32:18,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 23:32:18,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 23:32:18,342 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 23:32:18,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 23:32:18,342 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 23:32:18,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 23:32:18,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 23:32:18,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 23:32:18,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 23:32:18,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 23:32:18,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 23:32:18,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 23:32:18,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 23:32:18,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 23:32:18,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 23:32:18,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 23:32:18,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 23:32:18,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 23:32:18,344 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 23:32:18,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 23:32:18,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 23:32:18,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 23:32:18,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 23:32:18,673 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 23:32:18,674 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 23:32:18,675 INFO L432 ainManager$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 [2021-07-09 23:32:18,675 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' [2021-07-09 23:32:18,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 23:32:18,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 23:32:18,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 23:32:18,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 23:32:18,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 23:32:18,709 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,714 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 23:32:18,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 23:32:18,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 23:32:18,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 23:32:18,729 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,729 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,730 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,730 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,732 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,734 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,735 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 09.07 11:32:18" (1/1) ... [2021-07-09 23:32:18,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 23:32:18,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 23:32:18,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 23:32:18,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 23:32:18,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:32:18" (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 23:32:18,807 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 23:32:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 23:32:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 23:32:18,809 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 23:32:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 23:32:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 23:32:18,809 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 23:32:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 23:32:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 23:32:18,810 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 23:32:18,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 23:32:18,954 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 23:32:18,956 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 11:32:18 BoogieIcfgContainer [2021-07-09 23:32:18,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 23:32:18,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 23:32:18,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 23:32:18,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 23:32:18,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 11:32:18" (1/2) ... [2021-07-09 23:32:18,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d673acb and model type threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 11:32:18, skipping insertion in model container [2021-07-09 23:32:18,961 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 09.07 11:32:18" (2/2) ... [2021-07-09 23:32:18,962 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-2.wvr.bpl [2021-07-09 23:32:18,966 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 23:32:18,967 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 23:32:18,967 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 23:32:18,967 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 23:32:19,004 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 23:32:19,023 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 23:32:19,039 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 23:32:19,039 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 23:32:19,040 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 23:32:19,040 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 23:32:19,040 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 23:32:19,040 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 23:32:19,040 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 23:32:19,040 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 23:32:19,114 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) [2021-07-09 23:32:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-09 23:32:19,125 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:32:19,125 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:32:19,126 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:32:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:32:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1367987228, now seen corresponding path program 1 times [2021-07-09 23:32:19,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:32:19,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398683395] [2021-07-09 23:32:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:32:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:32:19,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:32:19,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-09 23:32:19,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:32:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 23:32:19,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:32:19,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398683395] [2021-07-09 23:32:19,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398683395] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:32:19,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:32:19,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:32:19,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995009801] [2021-07-09 23:32:19,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:32:19,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:32:19,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:32:19,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:32:19,340 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) [2021-07-09 23:32:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:32:19,390 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2021-07-09 23:32:19,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:32:19,393 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 [2021-07-09 23:32:19,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:32:19,399 INFO L225 Difference]: With dead ends: 38 [2021-07-09 23:32:19,399 INFO L226 Difference]: Without dead ends: 28 [2021-07-09 23:32:19,400 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:32:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-07-09 23:32:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-07-09 23:32:19,429 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) [2021-07-09 23:32:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-07-09 23:32:19,432 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 18 [2021-07-09 23:32:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:32:19,432 INFO L482 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-07-09 23:32:19,433 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) [2021-07-09 23:32:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2021-07-09 23:32:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-09 23:32:19,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:32:19,434 INFO L508 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 23:32:19,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 23:32:19,435 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:32:19,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:32:19,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1653154376, now seen corresponding path program 2 times [2021-07-09 23:32:19,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:32:19,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422600898] [2021-07-09 23:32:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:32:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:32:19,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:32:19,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:32:19,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:32:19,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:32:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 23:32:19,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:32:19,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422600898] [2021-07-09 23:32:19,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422600898] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:32:19,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:32:19,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 23:32:19,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077910470] [2021-07-09 23:32:19,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 23:32:19,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:32:19,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 23:32:19,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-09 23:32:19,512 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) [2021-07-09 23:32:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:32:19,551 INFO L93 Difference]: Finished difference Result 44 states and 64 transitions. [2021-07-09 23:32:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 23:32:19,551 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 [2021-07-09 23:32:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:32:19,553 INFO L225 Difference]: With dead ends: 44 [2021-07-09 23:32:19,553 INFO L226 Difference]: Without dead ends: 44 [2021-07-09 23:32:19,555 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-09 23:32:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-07-09 23:32:19,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-07-09 23:32:19,565 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) [2021-07-09 23:32:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 61 transitions. [2021-07-09 23:32:19,569 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 61 transitions. Word has length 21 [2021-07-09 23:32:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:32:19,569 INFO L482 AbstractCegarLoop]: Abstraction has 41 states and 61 transitions. [2021-07-09 23:32:19,570 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) [2021-07-09 23:32:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 61 transitions. [2021-07-09 23:32:19,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-07-09 23:32:19,572 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 23:32:19,572 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] [2021-07-09 23:32:19,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 23:32:19,572 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 23:32:19,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 23:32:19,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1902213642, now seen corresponding path program 1 times [2021-07-09 23:32:19,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 23:32:19,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155437410] [2021-07-09 23:32:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 23:32:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 23:32:19,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:32:19,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-09 23:32:19,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 23:32:19,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 23:32:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 23:32:19,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 23:32:19,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155437410] [2021-07-09 23:32:19,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155437410] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 23:32:19,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 23:32:19,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 23:32:19,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134039404] [2021-07-09 23:32:19,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 23:32:19,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 23:32:19,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 23:32:19,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:32:19,622 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) [2021-07-09 23:32:19,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 23:32:19,632 INFO L93 Difference]: Finished difference Result 30 states and 48 transitions. [2021-07-09 23:32:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 23:32:19,632 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 [2021-07-09 23:32:19,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 23:32:19,633 INFO L225 Difference]: With dead ends: 30 [2021-07-09 23:32:19,633 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 23:32:19,633 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 23:32:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 23:32:19,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 23:32:19,634 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 23:32:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 23:32:19,634 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-07-09 23:32:19,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 23:32:19,634 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 23:32:19,634 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) [2021-07-09 23:32:19,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 23:32:19,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 23:32:19,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 23:32:19,636 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 23:32:19,638 INFO L202 PluginConnector]: Adding new model threaded-sum-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 11:32:19 BasicIcfg [2021-07-09 23:32:19,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 23:32:19,639 INFO L168 Benchmark]: Toolchain (without parser) took 941.08 ms. Allocated memory is still 213.9 MB. Free memory was 193.4 MB in the beginning and 171.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 8.0 GB. [2021-07-09 23:32:19,640 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.49 ms. Allocated memory is still 213.9 MB. Free memory was 194.4 MB in the beginning and 194.4 MB in the end (delta: 79.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 23:32:19,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.61 ms. Allocated memory is still 213.9 MB. Free memory was 193.2 MB in the beginning and 191.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:32:19,644 INFO L168 Benchmark]: Boogie Preprocessor took 13.08 ms. Allocated memory is still 213.9 MB. Free memory was 191.8 MB in the beginning and 190.9 MB in the end (delta: 927.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 23:32:19,645 INFO L168 Benchmark]: RCFGBuilder took 220.11 ms. Allocated memory is still 213.9 MB. Free memory was 190.8 MB in the beginning and 179.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 23:32:19,645 INFO L168 Benchmark]: TraceAbstraction took 680.42 ms. Allocated memory is still 213.9 MB. Free memory was 178.5 MB in the beginning and 171.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2021-07-09 23:32:19,650 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 0.49 ms. Allocated memory is still 213.9 MB. Free memory was 194.4 MB in the beginning and 194.4 MB in the end (delta: 79.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 22.61 ms. Allocated memory is still 213.9 MB. Free memory was 193.2 MB in the beginning and 191.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.08 ms. Allocated memory is still 213.9 MB. Free memory was 191.8 MB in the beginning and 190.9 MB in the end (delta: 927.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 220.11 ms. Allocated memory is still 213.9 MB. Free memory was 190.8 MB in the beginning and 179.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 680.42 ms. Allocated memory is still 213.9 MB. Free memory was 178.5 MB in the beginning and 171.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.7 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: 17, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 13, negative conditional: 0, negative unconditional: 13, 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: 597.9ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 15.7ms, AutomataDifference: 134.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 71.6ms, PartialOrderReductionTime: 60.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 9 SDslu, 40 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.6ms 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: 34.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.0ms SsaConstructionTime, 41.4ms SatisfiabilityAnalysisTime, 118.5ms 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...