./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro --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 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:24:04,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:24:04,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:24:04,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:24:04,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:24:04,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:24:04,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:24:04,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:24:04,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:24:04,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:24:04,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:24:04,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:24:04,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:24:04,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:24:04,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:24:04,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:24:04,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:24:04,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:24:04,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:24:04,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:24:04,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:24:04,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:24:04,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:24:04,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:24:04,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:24:04,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:24:04,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:24:04,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:24:04,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:24:04,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:24:04,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:24:04,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:24:04,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:24:04,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:24:04,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:24:04,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:24:04,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:24:04,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:24:04,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:24:04,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:24:04,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:24:04,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:24:04,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:24:04,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:24:04,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:24:04,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:24:04,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:24:04,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:24:04,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:24:04,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:24:04,964 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:24:04,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:24:04,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:24:04,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:24:04,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:24:04,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:24:04,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:24:04,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:24:04,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:24:04,967 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:24:04,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:24:04,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:24:04,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:24:04,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:24:04,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:24:04,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:24:04,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:24:04,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:24:04,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:24:04,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:24:04,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:24:04,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:24:04,971 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:24:04,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:24:04,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:24:04,972 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 [2022-11-18 18:24:05,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:24:05,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:24:05,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:24:05,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:24:05,320 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:24:05,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-18 18:24:05,406 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/data/0f9a4b4a9/71396b0971fc4ee391527f8ea66de88e/FLAGaaa2b342c [2022-11-18 18:24:05,892 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:24:05,893 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-18 18:24:05,899 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/data/0f9a4b4a9/71396b0971fc4ee391527f8ea66de88e/FLAGaaa2b342c [2022-11-18 18:24:06,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/data/0f9a4b4a9/71396b0971fc4ee391527f8ea66de88e [2022-11-18 18:24:06,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:24:06,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:24:06,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:24:06,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:24:06,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:24:06,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d321f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06, skipping insertion in model container [2022-11-18 18:24:06,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:24:06,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:24:06,516 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-18 18:24:06,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:24:06,544 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:24:06,599 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-18 18:24:06,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:24:06,616 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:24:06,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06 WrapperNode [2022-11-18 18:24:06,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:24:06,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:24:06,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:24:06,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:24:06,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,680 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2022-11-18 18:24:06,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:24:06,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:24:06,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:24:06,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:24:06,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,707 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:24:06,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:24:06,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:24:06,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:24:06,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (1/1) ... [2022-11-18 18:24:06,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:24:06,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:06,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:24:06,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:24:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:24:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:24:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:24:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:24:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:24:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:24:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:24:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:24:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:24:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:24:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:24:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:24:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:24:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:24:06,813 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:24:06,912 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:24:06,915 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:24:07,204 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:24:07,279 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:24:07,279 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:24:07,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:24:07 BoogieIcfgContainer [2022-11-18 18:24:07,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:24:07,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:24:07,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:24:07,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:24:07,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:24:06" (1/3) ... [2022-11-18 18:24:07,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ceae58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:24:07, skipping insertion in model container [2022-11-18 18:24:07,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:24:06" (2/3) ... [2022-11-18 18:24:07,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ceae58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:24:07, skipping insertion in model container [2022-11-18 18:24:07,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:24:07" (3/3) ... [2022-11-18 18:24:07,307 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2022-11-18 18:24:07,315 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:24:07,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:24:07,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:24:07,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:24:07,389 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:24:07,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 208 flow [2022-11-18 18:24:07,503 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-11-18 18:24:07,504 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:24:07,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 2/94 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. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-11-18 18:24:07,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 96 transitions, 208 flow [2022-11-18 18:24:07,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 85 transitions, 182 flow [2022-11-18 18:24:07,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:24:07,536 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6699cb68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:24:07,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 18:24:07,575 INFO L130 PetriNetUnfolder]: 2/84 cut-off events. [2022-11-18 18:24:07,575 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:24:07,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:07,577 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:24:07,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:24:07,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1313022000, now seen corresponding path program 1 times [2022-11-18 18:24:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:07,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599660738] [2022-11-18 18:24:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:07,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:08,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:08,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599660738] [2022-11-18 18:24:08,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599660738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:08,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:08,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:24:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312390804] [2022-11-18 18:24:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:08,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:24:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:24:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:24:08,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 96 [2022-11-18 18:24:08,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 182 flow. Second operand has 9 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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) [2022-11-18 18:24:08,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:08,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 96 [2022-11-18 18:24:08,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:09,177 INFO L130 PetriNetUnfolder]: 30/185 cut-off events. [2022-11-18 18:24:09,177 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-18 18:24:09,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 185 events. 30/185 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 458 event pairs, 12 based on Foata normal form. 3/183 useless extension candidates. Maximal degree in co-relation 174. Up to 30 conditions per place. [2022-11-18 18:24:09,180 INFO L137 encePairwiseOnDemand]: 80/96 looper letters, 20 selfloop transitions, 8 changer transitions 17/101 dead transitions. [2022-11-18 18:24:09,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 101 transitions, 316 flow [2022-11-18 18:24:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:24:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:24:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 841 transitions. [2022-11-18 18:24:09,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7300347222222222 [2022-11-18 18:24:09,209 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 841 transitions. [2022-11-18 18:24:09,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 841 transitions. [2022-11-18 18:24:09,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:09,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 841 transitions. [2022-11-18 18:24:09,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 70.08333333333333) internal successors, (841), 12 states have internal predecessors, (841), 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) [2022-11-18 18:24:09,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 96.0) internal successors, (1248), 13 states have internal predecessors, (1248), 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) [2022-11-18 18:24:09,241 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 96.0) internal successors, (1248), 13 states have internal predecessors, (1248), 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) [2022-11-18 18:24:09,243 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 182 flow. Second operand 12 states and 841 transitions. [2022-11-18 18:24:09,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 101 transitions, 316 flow [2022-11-18 18:24:09,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:24:09,254 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 194 flow [2022-11-18 18:24:09,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=194, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2022-11-18 18:24:09,261 INFO L288 CegarLoopForPetriNet]: 90 programPoint places, 11 predicate places. [2022-11-18 18:24:09,263 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 194 flow [2022-11-18 18:24:09,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 68.77777777777777) internal successors, (619), 9 states have internal predecessors, (619), 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) [2022-11-18 18:24:09,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:09,265 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:24:09,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:24:09,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:24:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash 891476232, now seen corresponding path program 2 times [2022-11-18 18:24:09,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:09,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280497925] [2022-11-18 18:24:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:09,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:09,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:09,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280497925] [2022-11-18 18:24:09,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280497925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:09,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:09,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:24:09,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129081915] [2022-11-18 18:24:09,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:09,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:24:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:09,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:24:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:24:09,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 96 [2022-11-18 18:24:09,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-18 18:24:09,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:09,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 96 [2022-11-18 18:24:09,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:09,818 INFO L130 PetriNetUnfolder]: 8/131 cut-off events. [2022-11-18 18:24:09,818 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 18:24:09,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 131 events. 8/131 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 2 based on Foata normal form. 2/131 useless extension candidates. Maximal degree in co-relation 196. Up to 16 conditions per place. [2022-11-18 18:24:09,821 INFO L137 encePairwiseOnDemand]: 88/96 looper letters, 25 selfloop transitions, 9 changer transitions 3/94 dead transitions. [2022-11-18 18:24:09,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 303 flow [2022-11-18 18:24:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:24:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:24:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 507 transitions. [2022-11-18 18:24:09,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2022-11-18 18:24:09,824 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 507 transitions. [2022-11-18 18:24:09,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 507 transitions. [2022-11-18 18:24:09,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:09,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 507 transitions. [2022-11-18 18:24:09,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2022-11-18 18:24:09,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-11-18 18:24:09,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-11-18 18:24:09,830 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 194 flow. Second operand 7 states and 507 transitions. [2022-11-18 18:24:09,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 303 flow [2022-11-18 18:24:09,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 273 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-18 18:24:09,835 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 205 flow [2022-11-18 18:24:09,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2022-11-18 18:24:09,837 INFO L288 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2022-11-18 18:24:09,837 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 205 flow [2022-11-18 18:24:09,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-18 18:24:09,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:09,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:24:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:24:09,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:24:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1791851300, now seen corresponding path program 3 times [2022-11-18 18:24:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:09,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055476510] [2022-11-18 18:24:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:09,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:10,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055476510] [2022-11-18 18:24:10,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055476510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:10,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:10,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:24:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992331365] [2022-11-18 18:24:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:10,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:24:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:24:10,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:24:10,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 96 [2022-11-18 18:24:10,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2022-11-18 18:24:10,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:10,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 96 [2022-11-18 18:24:10,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:10,668 INFO L130 PetriNetUnfolder]: 16/165 cut-off events. [2022-11-18 18:24:10,669 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-18 18:24:10,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 165 events. 16/165 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 353 event pairs, 6 based on Foata normal form. 2/165 useless extension candidates. Maximal degree in co-relation 150. Up to 26 conditions per place. [2022-11-18 18:24:10,672 INFO L137 encePairwiseOnDemand]: 83/96 looper letters, 20 selfloop transitions, 8 changer transitions 18/102 dead transitions. [2022-11-18 18:24:10,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 361 flow [2022-11-18 18:24:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:24:10,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:24:10,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 635 transitions. [2022-11-18 18:24:10,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7349537037037037 [2022-11-18 18:24:10,676 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 635 transitions. [2022-11-18 18:24:10,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 635 transitions. [2022-11-18 18:24:10,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:10,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 635 transitions. [2022-11-18 18:24:10,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 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) [2022-11-18 18:24:10,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-11-18 18:24:10,686 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-11-18 18:24:10,686 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 205 flow. Second operand 9 states and 635 transitions. [2022-11-18 18:24:10,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 361 flow [2022-11-18 18:24:10,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 348 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 18:24:10,694 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 225 flow [2022-11-18 18:24:10,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2022-11-18 18:24:10,697 INFO L288 CegarLoopForPetriNet]: 90 programPoint places, 11 predicate places. [2022-11-18 18:24:10,698 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 225 flow [2022-11-18 18:24:10,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2022-11-18 18:24:10,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:10,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:24:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:24:10,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 18:24:10,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:10,702 INFO L85 PathProgramCache]: Analyzing trace with hash 447089700, now seen corresponding path program 4 times [2022-11-18 18:24:10,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:10,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449846994] [2022-11-18 18:24:10,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:10,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:11,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:11,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449846994] [2022-11-18 18:24:11,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449846994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:11,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:11,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:24:11,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553789331] [2022-11-18 18:24:11,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:11,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:24:11,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:11,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:24:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:24:11,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 96 [2022-11-18 18:24:11,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-18 18:24:11,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:11,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 96 [2022-11-18 18:24:11,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:11,131 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-18 18:24:11,131 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:24:11,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 61 events. 1/61 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2022-11-18 18:24:11,131 INFO L137 encePairwiseOnDemand]: 90/96 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-11-18 18:24:11,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 60 transitions, 183 flow [2022-11-18 18:24:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:24:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:24:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2022-11-18 18:24:11,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2022-11-18 18:24:11,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 486 transitions. [2022-11-18 18:24:11,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 486 transitions. [2022-11-18 18:24:11,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:11,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 486 transitions. [2022-11-18 18:24:11,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 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) [2022-11-18 18:24:11,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-11-18 18:24:11,138 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 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) [2022-11-18 18:24:11,138 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 225 flow. Second operand 7 states and 486 transitions. [2022-11-18 18:24:11,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 60 transitions, 183 flow [2022-11-18 18:24:11,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 160 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-18 18:24:11,140 INFO L231 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2022-11-18 18:24:11,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2022-11-18 18:24:11,141 INFO L288 CegarLoopForPetriNet]: 90 programPoint places, -17 predicate places. [2022-11-18 18:24:11,141 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2022-11-18 18:24:11,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2022-11-18 18:24:11,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 18:24:11,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 18:24:11,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 18:24:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:24:11,146 INFO L444 BasicCegarLoop]: Path program histogram: [4] [2022-11-18 18:24:11,149 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 18:24:11,149 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:24:11,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:24:11 BasicIcfg [2022-11-18 18:24:11,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:24:11,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:24:11,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:24:11,156 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:24:11,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:24:07" (3/4) ... [2022-11-18 18:24:11,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:24:11,165 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 18:24:11,166 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 18:24:11,170 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-18 18:24:11,170 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 18:24:11,171 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:24:11,171 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:24:11,215 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:24:11,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:24:11,216 INFO L158 Benchmark]: Toolchain (without parser) took 4953.06ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 118.7MB in the beginning and 128.3MB in the end (delta: -9.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 18:24:11,216 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 155.2MB. Free memory is still 135.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:24:11,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.47ms. Allocated memory is still 155.2MB. Free memory was 118.5MB in the beginning and 131.1MB in the end (delta: -12.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 18:24:11,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.78ms. Allocated memory is still 155.2MB. Free memory was 131.1MB in the beginning and 129.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:24:11,217 INFO L158 Benchmark]: Boogie Preprocessor took 29.60ms. Allocated memory is still 155.2MB. Free memory was 129.2MB in the beginning and 128.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:24:11,218 INFO L158 Benchmark]: RCFGBuilder took 570.74ms. Allocated memory is still 155.2MB. Free memory was 128.0MB in the beginning and 110.9MB in the end (delta: 17.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 18:24:11,218 INFO L158 Benchmark]: TraceAbstraction took 3869.83ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 110.2MB in the beginning and 131.4MB in the end (delta: -21.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-11-18 18:24:11,219 INFO L158 Benchmark]: Witness Printer took 60.02ms. Allocated memory is still 186.6MB. Free memory was 131.4MB in the beginning and 128.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 18:24:11,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 155.2MB. Free memory is still 135.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.47ms. Allocated memory is still 155.2MB. Free memory was 118.5MB in the beginning and 131.1MB in the end (delta: -12.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.78ms. Allocated memory is still 155.2MB. Free memory was 131.1MB in the beginning and 129.2MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.60ms. Allocated memory is still 155.2MB. Free memory was 129.2MB in the beginning and 128.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 570.74ms. Allocated memory is still 155.2MB. Free memory was 128.0MB in the beginning and 110.9MB in the end (delta: 17.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3869.83ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 110.2MB in the beginning and 131.4MB in the end (delta: -21.3MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Witness Printer took 60.02ms. Allocated memory is still 186.6MB. Free memory was 131.4MB in the beginning and 128.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 102]: 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, 112 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 138 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 138 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 343 IncrementalHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 45 mSDtfsCounter, 343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=225occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 320 ConstructedInterpolants, 0 QuantifiedInterpolants, 1080 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 18:24:11,244 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd345929-007c-41ba-b557-8f7e3031af7f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE