/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_times.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-01 23:29:30,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-01 23:29:30,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-01 23:29:30,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-01 23:29:30,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-01 23:29:30,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-01 23:29:30,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-01 23:29:30,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-01 23:29:30,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-01 23:29:30,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-01 23:29:30,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-01 23:29:30,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-01 23:29:30,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-01 23:29:30,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-01 23:29:30,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-01 23:29:30,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-01 23:29:30,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-01 23:29:30,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-01 23:29:30,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-01 23:29:30,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-01 23:29:30,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-01 23:29:30,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-01 23:29:30,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-01 23:29:30,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-01 23:29:30,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... 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[2021-06-01 23:29:30,131 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 23:29:30,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-01 23:29:30,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-01 23:29:30,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-01 23:29:30,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-01 23:29:30,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-01 23:29:30,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-01 23:29:30,172 INFO L138 SettingsManager]: * Use SBE=true [2021-06-01 23:29:30,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-01 23:29:30,172 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-01 23:29:30,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-01 23:29:30,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-01 23:29:30,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-01 23:29:30,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-01 23:29:30,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-01 23:29:30,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-01 23:29:30,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-01 23:29:30,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-01 23:29:30,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-01 23:29:30,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-01 23:29:30,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-01 23:29:30,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-01 23:29:30,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-01 23:29:30,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-01 23:29:30,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 23:29:30,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-01 23:29:30,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-01 23:29:30,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-01 23:29:30,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-01 23:29:30,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-01 23:29:30,176 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-01 23:29:30,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-01 23:29:30,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-01 23:29:30,177 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-01 23:29:30,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-01 23:29:30,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-01 23:29:30,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-01 23:29:30,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-01 23:29:30,497 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-01 23:29:30,498 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-01 23:29:30,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl [2021-06-01 23:29:30,499 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_multiple_times.bpl' [2021-06-01 23:29:30,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-01 23:29:30,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-01 23:29:30,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-01 23:29:30,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-01 23:29:30,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-01 23:29:30,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-01 23:29:30,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-01 23:29:30,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-01 23:29:30,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-01 23:29:30,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/1) ... [2021-06-01 23:29:30,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-01 23:29:30,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-01 23:29:30,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-01 23:29:30,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-01 23:29:30,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (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 23:29:30,641 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-01 23:29:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-01 23:29:30,641 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-01 23:29:30,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-01 23:29:30,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-01 23:29:30,642 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 23:29:30,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-01 23:29:30,740 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-01 23:29:30,741 INFO L202 PluginConnector]: Adding new model fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 11:29:30 BoogieIcfgContainer [2021-06-01 23:29:30,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-01 23:29:30,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-01 23:29:30,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-01 23:29:30,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-01 23:29:30,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 11:29:30" (1/2) ... [2021-06-01 23:29:30,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b86eaa and model type fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 11:29:30, skipping insertion in model container [2021-06-01 23:29:30,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 11:29:30" (2/2) ... [2021-06-01 23:29:30,748 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_multiple_times.bpl [2021-06-01 23:29:30,759 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-01 23:29:30,760 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-01 23:29:30,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-01 23:29:30,761 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-01 23:29:30,779 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,779 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,780 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,782 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,786 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,789 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork2_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-01 23:29:30,798 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-06-01 23:29:30,815 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 23:29:30,864 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 23:29:30,864 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 23:29:30,864 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 23:29:30,865 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 23:29:30,865 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 23:29:30,865 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 23:29:30,865 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 23:29:30,865 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-01 23:29:30,906 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-01 23:29:30,908 INFO L202 PluginConnector]: Adding new model fork_multiple_times.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 11:29:30 BasicIcfg [2021-06-01 23:29:30,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-01 23:29:30,910 INFO L168 Benchmark]: Toolchain (without parser) took 378.75 ms. Allocated memory is still 354.4 MB. Free memory was 333.7 MB in the beginning and 337.8 MB in the end (delta: -4.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 23:29:30,910 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 354.4 MB. Free memory was 334.7 MB in the beginning and 334.6 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 23:29:30,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.51 ms. Allocated memory is still 354.4 MB. Free memory was 333.6 MB in the beginning and 332.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 23:29:30,911 INFO L168 Benchmark]: Boogie Preprocessor took 12.78 ms. Allocated memory is still 354.4 MB. Free memory was 332.2 MB in the beginning and 331.3 MB in the end (delta: 833.1 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-01 23:29:30,912 INFO L168 Benchmark]: RCFGBuilder took 168.61 ms. Allocated memory is still 354.4 MB. Free memory was 331.3 MB in the beginning and 322.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-01 23:29:30,913 INFO L168 Benchmark]: TraceAbstraction took 165.16 ms. Allocated memory is still 354.4 MB. Free memory was 322.5 MB in the beginning and 337.8 MB in the end (delta: -15.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 23:29:30,916 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 354.4 MB. Free memory was 334.7 MB in the beginning and 334.6 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.51 ms. Allocated memory is still 354.4 MB. Free memory was 333.6 MB in the beginning and 332.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.78 ms. Allocated memory is still 354.4 MB. Free memory was 332.2 MB in the beginning and 331.3 MB in the end (delta: 833.1 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 168.61 ms. Allocated memory is still 354.4 MB. Free memory was 331.3 MB in the beginning and 322.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 165.16 ms. Allocated memory is still 354.4 MB. Free memory was 322.5 MB in the beginning and 337.8 MB in the end (delta: -15.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 42, positive: 42, positive conditional: 42, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 42, positive: 42, positive conditional: 42, 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: 42, positive: 42, positive conditional: 0, positive unconditional: 42, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 18, positive: 18, positive conditional: 0, positive unconditional: 18, 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: 42, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 18, unknown conditional: 0, unknown unconditional: 18] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 ], Maximal queried relation: 0, Independence queries for same thread: 0 - PositiveResult [Line: 27]: 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, 26 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 75.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.3ms, PartialOrderReductionTime: 18.8ms, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...