./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-1_1-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-1_1-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f78296dc1cf80b4adc36195bb88732ccad57c55 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 03:09:25,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 03:09:25,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 03:09:25,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 03:09:25,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 03:09:25,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 03:09:25,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 03:09:25,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 03:09:25,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 03:09:25,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 03:09:25,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 03:09:25,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 03:09:25,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 03:09:25,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 03:09:25,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 03:09:25,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 03:09:25,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 03:09:25,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 03:09:25,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 03:09:25,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 03:09:25,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 03:09:25,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 03:09:25,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 03:09:25,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 03:09:25,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 03:09:25,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 03:09:25,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 03:09:25,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 03:09:25,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 03:09:25,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 03:09:25,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 03:09:25,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 03:09:25,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 03:09:25,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 03:09:25,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 03:09:25,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 03:09:25,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 03:09:25,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 03:09:25,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 03:09:25,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 03:09:25,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 03:09:25,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 03:09:25,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 03:09:25,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 03:09:25,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 03:09:25,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 03:09:25,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 03:09:25,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 03:09:25,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 03:09:25,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 03:09:25,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 03:09:25,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 03:09:25,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 03:09:25,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 03:09:25,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 03:09:25,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 03:09:25,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 03:09:25,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 03:09:25,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 03:09:25,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 03:09:25,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 03:09:25,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 03:09:25,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 03:09:25,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 03:09:25,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 03:09:25,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 03:09:25,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 03:09:25,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 03:09:25,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 03:09:25,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 03:09:25,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 03:09:25,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f78296dc1cf80b4adc36195bb88732ccad57c55 [2020-10-20 03:09:26,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 03:09:26,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 03:09:26,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 03:09:26,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 03:09:26,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 03:09:26,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-1_1-join.i [2020-10-20 03:09:26,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb68325b/eb87b6a9fe8a4b06a5e8f543df039da5/FLAG1ac56f4a5 [2020-10-20 03:09:26,914 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 03:09:26,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-1_1-join.i [2020-10-20 03:09:26,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb68325b/eb87b6a9fe8a4b06a5e8f543df039da5/FLAG1ac56f4a5 [2020-10-20 03:09:27,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb68325b/eb87b6a9fe8a4b06a5e8f543df039da5 [2020-10-20 03:09:27,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 03:09:27,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 03:09:27,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 03:09:27,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 03:09:27,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 03:09:27,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:09:27" (1/1) ... [2020-10-20 03:09:27,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f47be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:27, skipping insertion in model container [2020-10-20 03:09:27,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 03:09:27" (1/1) ... [2020-10-20 03:09:27,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 03:09:27,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 03:09:27,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:09:27,770 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 03:09:27,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 03:09:28,265 INFO L208 MainTranslator]: Completed translation [2020-10-20 03:09:28,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28 WrapperNode [2020-10-20 03:09:28,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 03:09:28,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 03:09:28,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 03:09:28,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 03:09:28,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 03:09:28,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 03:09:28,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 03:09:28,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 03:09:28,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (1/1) ... [2020-10-20 03:09:28,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 03:09:28,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 03:09:28,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 03:09:28,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 03:09:28,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (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 [2020-10-20 03:09:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 03:09:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 03:09:28,465 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-20 03:09:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 03:09:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 03:09:28,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 03:09:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 03:09:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-10-20 03:09:28,466 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-10-20 03:09:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 03:09:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 03:09:28,469 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-20 03:09:29,051 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 03:09:29,052 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-20 03:09:29,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:29 BoogieIcfgContainer [2020-10-20 03:09:29,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 03:09:29,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 03:09:29,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 03:09:29,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 03:09:29,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 03:09:27" (1/3) ... [2020-10-20 03:09:29,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35536c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:09:29, skipping insertion in model container [2020-10-20 03:09:29,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 03:09:28" (2/3) ... [2020-10-20 03:09:29,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35536c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 03:09:29, skipping insertion in model container [2020-10-20 03:09:29,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:29" (3/3) ... [2020-10-20 03:09:29,064 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2020-10-20 03:09:29,077 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-20 03:09:29,077 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 03:09:29,086 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 03:09:29,087 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-20 03:09:29,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,116 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,116 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,116 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,117 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,117 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,117 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,117 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,118 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,118 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,118 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,118 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_reach_error_#t~nondet32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,119 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_reach_error_#t~nondet32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,119 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,119 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,119 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_reach_error_#t~nondet32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,120 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_reach_error_#t~nondet32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,123 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,123 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,124 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,124 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,124 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,124 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,124 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_reach_error_#t~nondet32.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,124 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_reach_error_#t~nondet32.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,125 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-20 03:09:29,143 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-20 03:09:29,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 03:09:29,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 03:09:29,181 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 03:09:29,181 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 03:09:29,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 03:09:29,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 03:09:29,182 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 03:09:29,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 03:09:29,182 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 03:09:29,199 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-20 03:09:29,202 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 108 transitions, 224 flow [2020-10-20 03:09:29,205 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 108 transitions, 224 flow [2020-10-20 03:09:29,208 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 108 transitions, 224 flow [2020-10-20 03:09:29,258 INFO L129 PetriNetUnfolder]: 9/119 cut-off events. [2020-10-20 03:09:29,258 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-20 03:09:29,263 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 9/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 243 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2020-10-20 03:09:29,265 INFO L117 LiptonReduction]: Number of co-enabled transitions 532 [2020-10-20 03:09:31,278 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-20 03:09:31,673 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-20 03:09:31,790 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-20 03:09:31,992 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-20 03:09:32,170 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-20 03:09:32,563 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 116 [2020-10-20 03:09:32,721 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-20 03:09:32,936 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-20 03:09:33,132 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-20 03:09:33,135 INFO L132 LiptonReduction]: Checked pairs total: 456 [2020-10-20 03:09:33,135 INFO L134 LiptonReduction]: Total number of compositions: 145 [2020-10-20 03:09:33,142 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 14 transitions, 36 flow [2020-10-20 03:09:33,151 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 21 states. [2020-10-20 03:09:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-20 03:09:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2020-10-20 03:09:33,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 03:09:33,160 INFO L422 BasicCegarLoop]: trace histogram [1] [2020-10-20 03:09:33,161 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 03:09:33,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 03:09:33,167 INFO L82 PathProgramCache]: Analyzing trace with hash 456, now seen corresponding path program 1 times [2020-10-20 03:09:33,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 03:09:33,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42847834] [2020-10-20 03:09:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 03:09:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 03:09:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 03:09:33,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42847834] [2020-10-20 03:09:33,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 03:09:33,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2020-10-20 03:09:33,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597719029] [2020-10-20 03:09:33,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 03:09:33,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 03:09:33,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 03:09:33,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:09:33,423 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-20 03:09:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 03:09:33,438 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-10-20 03:09:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 03:09:33,440 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2020-10-20 03:09:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 03:09:33,445 INFO L225 Difference]: With dead ends: 14 [2020-10-20 03:09:33,446 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 03:09:33,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 03:09:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 03:09:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 03:09:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 03:09:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 03:09:33,474 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1 [2020-10-20 03:09:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 03:09:33,474 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 03:09:33,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 03:09:33,475 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 03:09:33,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 03:09:33,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 03:09:33,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 03:09:33 BasicIcfg [2020-10-20 03:09:33,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 03:09:33,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 03:09:33,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 03:09:33,480 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 03:09:33,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 03:09:29" (3/4) ... [2020-10-20 03:09:33,485 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 03:09:33,492 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2020-10-20 03:09:33,498 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 03:09:33,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 03:09:33,499 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:09:33,500 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 03:09:33,564 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 03:09:33,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 03:09:33,570 INFO L168 Benchmark]: Toolchain (without parser) took 6530.99 ms. Allocated memory was 41.9 MB in the beginning and 91.2 MB in the end (delta: 49.3 MB). Free memory was 21.4 MB in the beginning and 16.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 54.0 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,571 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 43.5 kB). Peak memory consumption was 43.5 kB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1224.45 ms. Allocated memory was 41.9 MB in the beginning and 69.7 MB in the end (delta: 27.8 MB). Free memory was 20.5 MB in the beginning and 42.1 MB in the end (delta: -21.6 MB). Peak memory consumption was 32.2 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.67 ms. Allocated memory is still 69.7 MB. Free memory was 42.1 MB in the beginning and 38.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,574 INFO L168 Benchmark]: Boogie Preprocessor took 49.58 ms. Allocated memory is still 69.7 MB. Free memory was 38.5 MB in the beginning and 36.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,577 INFO L168 Benchmark]: RCFGBuilder took 658.13 ms. Allocated memory was 69.7 MB in the beginning and 70.3 MB in the end (delta: 524.3 kB). Free memory was 36.1 MB in the beginning and 23.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,579 INFO L168 Benchmark]: TraceAbstraction took 4422.33 ms. Allocated memory was 70.3 MB in the beginning and 91.2 MB in the end (delta: 21.0 MB). Free memory was 22.7 MB in the beginning and 21.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,580 INFO L168 Benchmark]: Witness Printer took 85.25 ms. Allocated memory is still 91.2 MB. Free memory was 21.1 MB in the beginning and 16.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. [2020-10-20 03:09:33,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 32.0 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 43.5 kB). Peak memory consumption was 43.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 1224.45 ms. Allocated memory was 41.9 MB in the beginning and 69.7 MB in the end (delta: 27.8 MB). Free memory was 20.5 MB in the beginning and 42.1 MB in the end (delta: -21.6 MB). Peak memory consumption was 32.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 73.67 ms. Allocated memory is still 69.7 MB. Free memory was 42.1 MB in the beginning and 38.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 49.58 ms. Allocated memory is still 69.7 MB. Free memory was 38.5 MB in the beginning and 36.1 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 658.13 ms. Allocated memory was 69.7 MB in the beginning and 70.3 MB in the end (delta: 524.3 kB). Free memory was 36.1 MB in the beginning and 23.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4422.33 ms. Allocated memory was 70.3 MB in the beginning and 91.2 MB in the end (delta: 21.0 MB). Free memory was 22.7 MB in the beginning and 21.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 14.3 GB. * Witness Printer took 85.25 ms. Allocated memory is still 91.2 MB. Free memory was 21.1 MB in the beginning and 16.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 381 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 5 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 102 PlacesBefore, 16 PlacesAfterwards, 108 TransitionsBefore, 14 TransitionsAfterwards, 532 CoEnabledTransitionPairs, 7 FixpointIterations, 85 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 145 TotalNumberOfCompositions, 456 MoverChecksTotal - PositiveResult [Line: 1691]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1691]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1691]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 1691]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...