/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-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 20:13:25,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 20:13:25,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 20:13:25,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-14 20:13:25,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-14 20:13:25,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-14 20:13:25,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-14 20:13:25,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-14 20:13:25,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-14 20:13:25,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-14 20:13:25,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-14 20:13:25,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-14 20:13:25,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-14 20:13:25,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-14 20:13:25,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-14 20:13:25,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-14 20:13:25,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-14 20:13:25,755 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-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-14 20:13:25,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 20:13:25,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 20:13:25,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 20:13:25,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 20:13:25,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 20:13:25,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 20:13:25,786 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 20:13:25,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 20:13:25,786 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 20:13:25,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 20:13:25,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 20:13:25,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 20:13:25,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 20:13:25,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 20:13:25,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 20:13:25,787 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 20:13:25,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 20:13:25,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 20:13:25,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 20:13:25,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 20:13:25,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 20:13:25,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 20:13:25,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 20:13:25,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 20:13:25,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 20:13:25,789 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 20:13:25,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 20:13:26,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 20:13:26,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 20:13:26,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 20:13:26,223 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 20:13:26,224 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 20:13:26,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_2.bpl [2021-06-14 20:13:26,225 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_2.bpl' [2021-06-14 20:13:26,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 20:13:26,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 20:13:26,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 20:13:26,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 20:13:26,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 20:13:26,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 20:13:26,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 20:13:26,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 20:13:26,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 20:13:26,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... [2021-06-14 20:13:26,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 20:13:26,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 20:13:26,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 20:13:26,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 20:13:26,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 20:13:26,348 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-14 20:13:26,349 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-14 20:13:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-14 20:13:26,349 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-14 20:13:26,349 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-14 20:13:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-14 20:13:26,349 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 20:13:26,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 20:13:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 20:13:26,350 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 20:13:26,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 20:13:26,477 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 20:13:26,479 INFO L202 PluginConnector]: Adding new model example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 08:13:26 BoogieIcfgContainer [2021-06-14 20:13:26,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 20:13:26,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 20:13:26,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 20:13:26,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 20:13:26,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:13:26" (1/2) ... [2021-06-14 20:13:26,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170dadfd and model type example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 08:13:26, skipping insertion in model container [2021-06-14 20:13:26,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 08:13:26" (2/2) ... [2021-06-14 20:13:26,485 INFO L111 eAbstractionObserver]: Analyzing ICFG example_2.bpl [2021-06-14 20:13:26,491 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 20:13:26,492 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 20:13:26,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 20:13:26,493 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 20:13:26,533 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-14 20:13:26,549 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 20:13:26,608 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 20:13:26,608 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 20:13:26,609 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 20:13:26,609 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 20:13:26,609 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 20:13:26,609 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 20:13:26,609 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 20:13:26,609 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 20:13:26,701 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 20:13:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 20:13:26,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2124364704, now seen corresponding path program 1 times [2021-06-14 20:13:26,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 20:13:26,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699676045] [2021-06-14 20:13:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 20:13:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 20:13:26,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 20:13:26,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 20:13:26,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699676045] [2021-06-14 20:13:26,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699676045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 20:13:26,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 20:13:26,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 20:13:26,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626136802] [2021-06-14 20:13:26,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-14 20:13:26,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 20:13:26,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-14 20:13:26,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-14 20:13:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:13:26,929 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 20:13:26,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 20:13:26,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:13:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-14 20:13:27,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-14 20:13:27,042 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-14 20:13:27,044 INFO L202 PluginConnector]: Adding new model example_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 08:13:27 BasicIcfg [2021-06-14 20:13:27,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-14 20:13:27,049 INFO L168 Benchmark]: Toolchain (without parser) took 801.42 ms. Allocated memory is still 211.8 MB. Free memory was 191.4 MB in the beginning and 193.7 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-14 20:13:27,049 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 211.8 MB. Free memory is still 192.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-14 20:13:27,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.26 ms. Allocated memory is still 211.8 MB. Free memory was 191.4 MB in the beginning and 189.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-14 20:13:27,050 INFO L168 Benchmark]: Boogie Preprocessor took 10.26 ms. Allocated memory is still 211.8 MB. Free memory was 189.9 MB in the beginning and 189.1 MB in the end (delta: 879.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-14 20:13:27,050 INFO L168 Benchmark]: RCFGBuilder took 201.80 ms. Allocated memory is still 211.8 MB. Free memory was 189.1 MB in the beginning and 180.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-14 20:13:27,056 INFO L168 Benchmark]: TraceAbstraction took 563.54 ms. Allocated memory is still 211.8 MB. Free memory was 180.1 MB in the beginning and 193.7 MB in the end (delta: -13.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-14 20:13:27,059 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 0.12 ms. Allocated memory is still 211.8 MB. Free memory is still 192.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 21.26 ms. Allocated memory is still 211.8 MB. Free memory was 191.4 MB in the beginning and 189.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.26 ms. Allocated memory is still 211.8 MB. Free memory was 189.9 MB in the beginning and 189.1 MB in the end (delta: 879.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 201.80 ms. Allocated memory is still 211.8 MB. Free memory was 189.1 MB in the beginning and 180.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 563.54 ms. Allocated memory is still 211.8 MB. Free memory was 180.1 MB in the beginning and 193.7 MB in the end (delta: -13.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 89, positive: 83, positive conditional: 16, positive unconditional: 67, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 87, positive: 83, positive conditional: 16, positive unconditional: 67, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 87, positive: 83, positive conditional: 0, positive unconditional: 83, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 66, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 66, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 87, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 66, unknown conditional: 0, unknown unconditional: 66] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, SemanticConditionEliminator.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Eliminated conditions: 0 ], Maximal queried relation: 1, Independence queries for same thread: 2 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 63, Number of persistent set computation: 63, Number of trivial persistent sets: 63, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 89, positive: 83, positive conditional: 16, positive unconditional: 67, negative: 6, negative conditional: 2, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 87, positive: 83, positive conditional: 16, positive unconditional: 67, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 87, positive: 83, positive conditional: 0, positive unconditional: 83, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 66, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 66, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 87, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 66, unknown conditional: 0, unknown unconditional: 66] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, SemanticConditionEliminator.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Eliminated conditions: 0 ], Maximal queried relation: 1, Independence queries for same thread: 2 - PositiveResult [Line: 17]: 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, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 470.3ms, OverallIterations: 1, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.2ms, PartialOrderReductionTime: 164.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.1ms SsaConstructionTime, 11.2ms SatisfiabilityAnalysisTime, 130.6ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 58 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...