/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_multiple_parameter.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-01 23:29:29,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-01 23:29:29,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-01 23:29:29,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-01 23:29:29,687 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-DelaySleep-NoLbe.epf [2021-06-01 23:29:29,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-01 23:29:29,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-01 23:29:29,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-01 23:29:29,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-01 23:29:29,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-01 23:29:29,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-01 23:29:29,703 INFO L138 SettingsManager]: * Use SBE=true [2021-06-01 23:29:29,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-01 23:29:29,703 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-01 23:29:29,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-01 23:29:29,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-01 23:29:29,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-01 23:29:29,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-01 23:29:29,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-01 23:29:29,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-01 23:29:29,704 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-01 23:29:29,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-01 23:29:29,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-01 23:29:29,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-01 23:29:29,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-01 23:29:29,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-01 23:29:29,705 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-01 23:29:29,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-01 23:29:29,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 23:29:29,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-01 23:29:29,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-01 23:29:29,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-01 23:29:29,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-01 23:29:29,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-01 23:29:29,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-01 23:29:29,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-01 23:29:29,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-01 23:29:29,706 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-01 23:29:29,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-01 23:29:29,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-01 23:29:29,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-01 23:29:29,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-01 23:29:29,960 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-01 23:29:29,961 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-01 23:29:29,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_parameter.bpl [2021-06-01 23:29:29,961 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_parameter.bpl' [2021-06-01 23:29:29,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-01 23:29:29,984 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-01 23:29:29,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-01 23:29:29,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-01 23:29:29,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-01 23:29:29,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:29,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-01 23:29:30,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-01 23:29:30,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-01 23:29:30,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-01 23:29:30,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/1) ... [2021-06-01 23:29:30,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-01 23:29:30,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-01 23:29:30,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-01 23:29:30,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-01 23:29:30,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (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 [2021-06-01 23:29:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure add [2021-06-01 23:29:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure add [2021-06-01 23:29:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-01 23:29:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-01 23:29:30,066 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-01 23:29:30,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-01 23:29:30,160 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-01 23:29:30,162 INFO L202 PluginConnector]: Adding new model fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 11:29:30 BoogieIcfgContainer [2021-06-01 23:29:30,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-01 23:29:30,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-01 23:29:30,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-01 23:29:30,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-01 23:29:30,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:29" (1/2) ... [2021-06-01 23:29:30,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e9217b and model type fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 11:29:30, skipping insertion in model container [2021-06-01 23:29:30,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 11:29:30" (2/2) ... [2021-06-01 23:29:30,168 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_multiple_parameter.bpl [2021-06-01 23:29:30,175 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-01 23:29:30,175 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-01 23:29:30,176 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-01 23:29:30,176 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-01 23:29:30,201 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,203 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,203 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,204 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,204 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,204 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,205 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_sum not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,206 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,206 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_num2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,206 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_sum not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,209 WARN L313 ript$VariableManager]: TermVariabe addThread1of1ForFork0_sum not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,217 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-01 23:29:30,234 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 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 [2021-06-01 23:29:30,280 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 23:29:30,280 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 23:29:30,280 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 23:29:30,282 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 23:29:30,282 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 23:29:30,282 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 23:29:30,282 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 23:29:30,282 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == add======== [2021-06-01 23:29:30,314 INFO L301 ceAbstractionStarter]: Result for error location add was SAFE (1/3) [2021-06-01 23:29:30,328 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-01 23:29:30,333 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 23:29:30,333 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 23:29:30,334 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 23:29:30,334 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 23:29:30,334 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 23:29:30,334 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 23:29:30,334 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 23:29:30,334 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == addThread1of1ForFork0======== [2021-06-01 23:29:30,337 INFO L430 AbstractCegarLoop]: === Iteration 1 === [addErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 23:29:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 23:29:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1444345, now seen corresponding path program 1 times [2021-06-01 23:29:30,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 23:29:30,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852438995] [2021-06-01 23:29:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 23:29:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 23:29:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 23:29:30,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 23:29:30,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852438995] [2021-06-01 23:29:30,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852438995] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 23:29:30,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 23:29:30,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-01 23:29:30,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960857257] [2021-06-01 23:29:30,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-01 23:29:30,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 23:29:30,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-01 23:29:30,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-01 23:29:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-01 23:29:30,500 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-01 23:29:30,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-06-01 23:29:30,517 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-01 23:29:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-01 23:29:30,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-01 23:29:30,544 INFO L301 ceAbstractionStarter]: Result for error location addThread1of1ForFork0 was SAFE (2/3) [2021-06-01 23:29:30,545 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-01 23:29:30,549 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 23:29:30,549 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 23:29:30,549 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 23:29:30,550 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 23:29:30,550 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 23:29:30,550 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 23:29:30,550 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 23:29:30,550 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-01 23:29:30,552 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-01 23:29:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 23:29:30,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1807797666, now seen corresponding path program 1 times [2021-06-01 23:29:30,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 23:29:30,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319466956] [2021-06-01 23:29:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 23:29:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 23:29:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 23:29:30,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 23:29:30,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319466956] [2021-06-01 23:29:30,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319466956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 23:29:30,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 23:29:30,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 23:29:30,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442965666] [2021-06-01 23:29:30,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 23:29:30,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 23:29:30,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 23:29:30,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-01 23:29:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-01 23:29:30,667 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-01 23:29:30,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2021-06-01 23:29:30,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-01 23:29:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 23:29:30,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-01 23:29:30,846 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (3/3) [2021-06-01 23:29:30,846 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-01 23:29:30,848 INFO L202 PluginConnector]: Adding new model fork_multiple_parameter.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 11:29:30 BasicIcfg [2021-06-01 23:29:30,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-01 23:29:30,849 INFO L168 Benchmark]: Toolchain (without parser) took 864.57 ms. Allocated memory is still 429.9 MB. Free memory was 409.0 MB in the beginning and 361.4 MB in the end (delta: 47.6 MB). Peak memory consumption was 48.9 MB. Max. memory is 16.0 GB. [2021-06-01 23:29:30,849 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 429.9 MB. Free memory is still 409.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 23:29:30,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.39 ms. Allocated memory is still 429.9 MB. Free memory was 408.9 MB in the beginning and 407.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 23:29:30,850 INFO L168 Benchmark]: Boogie Preprocessor took 8.54 ms. Allocated memory is still 429.9 MB. Free memory was 407.3 MB in the beginning and 406.5 MB in the end (delta: 795.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-01 23:29:30,850 INFO L168 Benchmark]: RCFGBuilder took 147.93 ms. Allocated memory is still 429.9 MB. Free memory was 406.5 MB in the beginning and 398.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-01 23:29:30,851 INFO L168 Benchmark]: TraceAbstraction took 684.98 ms. Allocated memory is still 429.9 MB. Free memory was 397.6 MB in the beginning and 361.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.0 GB. [2021-06-01 23:29:30,860 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 0.11 ms. Allocated memory is still 429.9 MB. Free memory is still 409.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.39 ms. Allocated memory is still 429.9 MB. Free memory was 408.9 MB in the beginning and 407.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 8.54 ms. Allocated memory is still 429.9 MB. Free memory was 407.3 MB in the beginning and 406.5 MB in the end (delta: 795.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 147.93 ms. Allocated memory is still 429.9 MB. Free memory was 406.5 MB in the beginning and 398.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 684.98 ms. Allocated memory is still 429.9 MB. Free memory was 397.6 MB in the beginning and 361.4 MB in the end (delta: 36.2 MB). Peak memory consumption was 38.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 ], Maximal queried relation: 0, Independence queries for same thread: 3 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 8, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 ], Maximal queried relation: 0, Independence queries for same thread: 3 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 11, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 ], Maximal queried relation: 0, Independence queries for same thread: 5 - PositiveResult [Line: 32]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 25]: 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: add with 1 thread instances CFG has 3 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 55.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 14.7ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: addThread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 214.7ms, OverallIterations: 1, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 26.7ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 1.9ms SsaConstructionTime, 12.0ms SatisfiabilityAnalysisTime, 92.4ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 299.7ms, OverallIterations: 1, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 175.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 8, 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: 0.5ms SsaConstructionTime, 3.2ms SatisfiabilityAnalysisTime, 106.2ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...