./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 43d6b9eba08fa25ee461dc8650759dcf2dd7232b ............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 14:08:37,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 14:08:37,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 14:08:37,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 14:08:37,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 14:08:37,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 14:08:37,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 14:08:37,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 14:08:37,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 14:08:37,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 14:08:37,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 14:08:37,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 14:08:37,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 14:08:37,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 14:08:37,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 14:08:37,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 14:08:37,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 14:08:37,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 14:08:37,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 14:08:37,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 14:08:37,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 14:08:38,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 14:08:38,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 14:08:38,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 14:08:38,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 14:08:38,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 14:08:38,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 14:08:38,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 14:08:38,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 14:08:38,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 14:08:38,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 14:08:38,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 14:08:38,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 14:08:38,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 14:08:38,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 14:08:38,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 14:08:38,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 14:08:38,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 14:08:38,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 14:08:38,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 14:08:38,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 14:08:38,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-08 14:08:38,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 14:08:38,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 14:08:38,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 14:08:38,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 14:08:38,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 14:08:38,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 14:08:38,119 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 14:08:38,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 14:08:38,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 14:08:38,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 14:08:38,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 14:08:38,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 14:08:38,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 14:08:38,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 14:08:38,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 14:08:38,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 14:08:38,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 14:08:38,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 14:08:38,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 14:08:38,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 14:08:38,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 14:08:38,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 14:08:38,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:08:38,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 14:08:38,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 14:08:38,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 14:08:38,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 14:08:38,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 14:08:38,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 14:08:38,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 14:08:38,127 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43d6b9eba08fa25ee461dc8650759dcf2dd7232b [2021-10-08 14:08:38,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 14:08:38,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 14:08:38,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 14:08:38,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 14:08:38,655 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 14:08:38,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2021-10-08 14:08:38,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0bddd965/01c322c766fa47b8a7ce1b3330a0f39a/FLAG59bf13b20 [2021-10-08 14:08:39,483 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 14:08:39,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c [2021-10-08 14:08:39,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0bddd965/01c322c766fa47b8a7ce1b3330a0f39a/FLAG59bf13b20 [2021-10-08 14:08:39,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0bddd965/01c322c766fa47b8a7ce1b3330a0f39a [2021-10-08 14:08:39,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 14:08:39,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 14:08:39,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 14:08:39,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 14:08:39,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 14:08:39,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:08:39" (1/1) ... [2021-10-08 14:08:39,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fcf2b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:39, skipping insertion in model container [2021-10-08 14:08:39,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:08:39" (1/1) ... [2021-10-08 14:08:39,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 14:08:39,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 14:08:40,113 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1843,1856] [2021-10-08 14:08:40,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:08:40,126 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 14:08:40,146 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp1x3.wvr.c[1843,1856] [2021-10-08 14:08:40,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:08:40,162 INFO L208 MainTranslator]: Completed translation [2021-10-08 14:08:40,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40 WrapperNode [2021-10-08 14:08:40,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 14:08:40,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 14:08:40,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 14:08:40,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 14:08:40,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 14:08:40,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 14:08:40,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 14:08:40,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 14:08:40,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 14:08:40,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 14:08:40,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 14:08:40,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 14:08:40,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (1/1) ... [2021-10-08 14:08:40,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:08:40,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:08:40,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 14:08:40,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 14:08:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 14:08:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 14:08:40,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 14:08:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 14:08:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 14:08:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 14:08:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 14:08:40,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 14:08:40,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 14:08:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 14:08:40,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 14:08:40,359 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 14:08:40,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 14:08:40,646 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 14:08:40,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:08:40 BoogieIcfgContainer [2021-10-08 14:08:40,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 14:08:40,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 14:08:40,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 14:08:40,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 14:08:40,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 02:08:39" (1/3) ... [2021-10-08 14:08:40,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3c2165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:08:40, skipping insertion in model container [2021-10-08 14:08:40,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:08:40" (2/3) ... [2021-10-08 14:08:40,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3c2165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:08:40, skipping insertion in model container [2021-10-08 14:08:40,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:08:40" (3/3) ... [2021-10-08 14:08:40,666 INFO L111 eAbstractionObserver]: Analyzing ICFG bench-exp1x3.wvr.c [2021-10-08 14:08:40,677 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 14:08:40,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 14:08:40,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-08 14:08:40,678 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 14:08:40,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,717 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,717 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,718 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,719 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,725 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,730 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,731 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:08:40,741 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 14:08:40,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 14:08:40,820 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 14:08:40,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-08 14:08:40,840 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 14:08:40,854 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 73 transitions, 162 flow [2021-10-08 14:08:40,858 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 73 transitions, 162 flow [2021-10-08 14:08:40,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 162 flow [2021-10-08 14:08:40,945 INFO L129 PetriNetUnfolder]: 6/71 cut-off events. [2021-10-08 14:08:40,946 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 14:08:40,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 6/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-10-08 14:08:40,964 INFO L116 LiptonReduction]: Number of co-enabled transitions 252 [2021-10-08 14:08:44,778 INFO L131 LiptonReduction]: Checked pairs total: 302 [2021-10-08 14:08:44,779 INFO L133 LiptonReduction]: Total number of compositions: 70 [2021-10-08 14:08:44,790 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 16 transitions, 48 flow [2021-10-08 14:08:44,806 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-10-08 14:08:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-10-08 14:08:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-08 14:08:44,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:08:44,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:08:44,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:08:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:08:44,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1541180929, now seen corresponding path program 1 times [2021-10-08 14:08:44,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:08:44,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302938651] [2021-10-08 14:08:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:08:44,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:08:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:08:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:08:45,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:08:45,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302938651] [2021-10-08 14:08:45,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302938651] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:08:45,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:08:45,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-08 14:08:45,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540646042] [2021-10-08 14:08:45,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 14:08:45,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:08:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 14:08:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 14:08:45,279 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-08 14:08:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:08:45,327 INFO L93 Difference]: Finished difference Result 37 states and 77 transitions. [2021-10-08 14:08:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 14:08:45,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-08 14:08:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:08:45,343 INFO L225 Difference]: With dead ends: 37 [2021-10-08 14:08:45,344 INFO L226 Difference]: Without dead ends: 32 [2021-10-08 14:08:45,345 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 14:08:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-08 14:08:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-08 14:08:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.161290322580645) internal successors, (67), 31 states have internal predecessors, (67), 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) [2021-10-08 14:08:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 67 transitions. [2021-10-08 14:08:45,390 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 67 transitions. Word has length 11 [2021-10-08 14:08:45,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:08:45,390 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 67 transitions. [2021-10-08 14:08:45,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-10-08 14:08:45,391 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 67 transitions. [2021-10-08 14:08:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 14:08:45,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:08:45,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:08:45,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 14:08:45,393 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-10-08 14:08:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:08:45,394 INFO L82 PathProgramCache]: Analyzing trace with hash 801264257, now seen corresponding path program 1 times [2021-10-08 14:08:45,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:08:45,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34084358] [2021-10-08 14:08:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:08:45,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:08:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:08:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:08:45,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:08:45,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34084358] [2021-10-08 14:08:45,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34084358] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 14:08:45,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084150145] [2021-10-08 14:08:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:08:45,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:08:45,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:08:45,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 14:08:45,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-08 14:08:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:08:45,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 14:08:45,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 14:08:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:08:47,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084150145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-08 14:08:47,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 14:08:47,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-08 14:08:47,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271627920] [2021-10-08 14:08:47,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 14:08:47,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:08:47,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 14:08:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-08 14:08:47,084 INFO L87 Difference]: Start difference. First operand 32 states and 67 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-08 14:08:47,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:08:47,193 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2021-10-08 14:08:47,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 14:08:47,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-08 14:08:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:08:47,195 INFO L225 Difference]: With dead ends: 44 [2021-10-08 14:08:47,195 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 14:08:47,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 14:08:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 14:08:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 14:08:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 14:08:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 14:08:47,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-08 14:08:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:08:47,198 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 14:08:47,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-08 14:08:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 14:08:47,199 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 14:08:47,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-08 14:08:47,204 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 14:08:47,209 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 14:08:47,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-08 14:08:47,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 14:08:47,435 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 14:08:47,435 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 14:08:47,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 02:08:47 BasicIcfg [2021-10-08 14:08:47,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 14:08:47,438 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 14:08:47,438 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 14:08:47,439 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 14:08:47,439 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:08:40" (3/4) ... [2021-10-08 14:08:47,443 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 14:08:47,466 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 14:08:47,466 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 14:08:47,474 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-08 14:08:47,475 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 14:08:47,475 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:08:47,475 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:08:47,542 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-08 14:08:47,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 14:08:47,545 INFO L168 Benchmark]: Toolchain (without parser) took 7698.67 ms. Allocated memory was 48.2 MB in the beginning and 86.0 MB in the end (delta: 37.7 MB). Free memory was 25.2 MB in the beginning and 63.4 MB in the end (delta: -38.3 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-10-08 14:08:47,546 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 30.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-08 14:08:47,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.50 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 26.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-08 14:08:47,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.91 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 24.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-08 14:08:47,547 INFO L168 Benchmark]: Boogie Preprocessor took 29.31 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 23.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-08 14:08:47,548 INFO L168 Benchmark]: RCFGBuilder took 415.14 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.4 MB in the beginning and 34.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-10-08 14:08:47,549 INFO L168 Benchmark]: TraceAbstraction took 6786.57 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 34.0 MB in the beginning and 66.0 MB in the end (delta: -32.0 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:08:47,549 INFO L168 Benchmark]: Witness Printer took 104.75 ms. Allocated memory is still 86.0 MB. Free memory was 66.0 MB in the beginning and 63.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:08:47,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 30.2 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.50 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 26.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.91 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 24.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.31 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 23.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 415.14 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.4 MB in the beginning and 34.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6786.57 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 34.0 MB in the beginning and 66.0 MB in the end (delta: -32.0 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * Witness Printer took 104.75 ms. Allocated memory is still 86.0 MB. Free memory was 66.0 MB in the beginning and 63.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3921.5ms, 74 PlacesBefore, 21 PlacesAfterwards, 73 TransitionsBefore, 16 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 70 TotalNumberOfCompositions, 302 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 302, positive: 302, positive conditional: 0, positive unconditional: 302, 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: 183, positive: 183, positive conditional: 0, positive unconditional: 183, 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: 183, positive: 183, positive conditional: 0, positive unconditional: 183, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 302, positive: 119, positive conditional: 0, positive unconditional: 119, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 183, unknown conditional: 0, unknown unconditional: 183] , 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 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6624.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 13.4ms, AutomataDifference: 214.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3984.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 11 SDslu, 27 SDs, 0 SdLazy, 34 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.2ms SsaConstructionTime, 145.4ms SatisfiabilityAnalysisTime, 1749.0ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 4 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 14:08:47,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...