./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- 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-6b4ec56 [2022-11-20 11:38:26,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:38:26,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:38:26,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:38:26,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:38:26,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:38:26,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:38:26,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:38:26,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:38:26,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:38:26,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:38:26,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:38:26,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:38:26,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:38:26,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:38:26,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:38:26,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:38:26,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:38:26,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:38:26,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:38:26,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:38:26,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:38:26,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:38:26,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:38:26,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:38:26,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:38:26,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:38:26,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:38:26,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:38:26,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:38:26,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:38:26,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:38:26,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:38:26,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:38:26,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:38:26,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:38:26,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:38:26,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:38:26,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:38:26,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:38:26,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:38:26,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 11:38:27,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:38:27,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:38:27,017 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:38:27,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:38:27,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:38:27,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:38:27,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:38:27,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:38:27,021 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:38:27,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:38:27,023 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:38:27,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:38:27,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:38:27,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:38:27,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:38:27,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:38:27,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:38:27,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:38:27,025 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 11:38:27,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:38:27,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:38:27,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:38:27,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:38:27,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:38:27,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:38:27,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:38:27,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:38:27,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:38:27,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:38:27,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:38:27,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:38:27,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:38:27,031 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:38:27,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:38:27,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:38:27,032 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_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2022-11-20 11:38:27,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:38:27,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:38:27,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:38:27,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:38:27,393 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:38:27,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-11-20 11:38:30,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:38:30,818 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:38:30,819 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2022-11-20 11:38:30,852 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/data/82d138979/8715eeed3b9441c3b57162bbf00d1679/FLAG5edb49a0e [2022-11-20 11:38:30,874 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/data/82d138979/8715eeed3b9441c3b57162bbf00d1679 [2022-11-20 11:38:30,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:38:30,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:38:30,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:38:30,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:38:30,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:38:30,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:30" (1/1) ... [2022-11-20 11:38:30,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76eb94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:30, skipping insertion in model container [2022-11-20 11:38:30,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:30" (1/1) ... [2022-11-20 11:38:30,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:38:30,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:38:31,649 WARN L237 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_e0762447-8ca3-42f4-8aed-6d7eec6ea366/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-11-20 11:38:31,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:38:31,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:38:31,795 WARN L237 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_e0762447-8ca3-42f4-8aed-6d7eec6ea366/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2022-11-20 11:38:31,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:38:31,917 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:38:31,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31 WrapperNode [2022-11-20 11:38:31,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:38:31,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:38:31,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:38:31,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:38:31,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:31,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,016 INFO L138 Inliner]: procedures = 271, calls = 31, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 256 [2022-11-20 11:38:32,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:38:32,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:38:32,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:38:32,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:38:32,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:38:32,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:38:32,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:38:32,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:38:32,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (1/1) ... [2022-11-20 11:38:32,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:38:32,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:32,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:38:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:38:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:38:32,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:38:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:38:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:38:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:38:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:38:32,189 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:38:32,189 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:38:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:38:32,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:38:32,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:38:32,192 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:38:32,426 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:38:32,428 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:38:32,932 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:38:32,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:38:32,951 INFO L300 CfgBuilder]: Removed 25 assume(true) statements. [2022-11-20 11:38:32,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:32 BoogieIcfgContainer [2022-11-20 11:38:32,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:38:32,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:38:32,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:38:32,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:38:32,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:38:30" (1/3) ... [2022-11-20 11:38:32,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fe1604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:32, skipping insertion in model container [2022-11-20 11:38:32,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:31" (2/3) ... [2022-11-20 11:38:32,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fe1604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:32, skipping insertion in model container [2022-11-20 11:38:32,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:32" (3/3) ... [2022-11-20 11:38:32,970 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2022-11-20 11:38:32,984 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:38:32,997 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:38:32,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-20 11:38:32,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:38:33,140 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:38:33,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 272 transitions, 552 flow [2022-11-20 11:38:33,420 INFO L130 PetriNetUnfolder]: 49/395 cut-off events. [2022-11-20 11:38:33,421 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:38:33,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 395 events. 49/395 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1701 event pairs, 0 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-20 11:38:33,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 272 transitions, 552 flow [2022-11-20 11:38:33,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 272 transitions, 552 flow [2022-11-20 11:38:33,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:38:33,476 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;@4b420fcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:38:33,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 11:38:33,491 INFO L130 PetriNetUnfolder]: 7/80 cut-off events. [2022-11-20 11:38:33,491 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:38:33,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:33,492 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] [2022-11-20 11:38:33,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-20 11:38:33,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:33,501 INFO L85 PathProgramCache]: Analyzing trace with hash -836350602, now seen corresponding path program 1 times [2022-11-20 11:38:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:33,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070746726] [2022-11-20 11:38:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:33,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:33,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:33,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070746726] [2022-11-20 11:38:33,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070746726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:33,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:33,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:38:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174317944] [2022-11-20 11:38:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:33,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:38:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:38:33,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:38:33,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 272 [2022-11-20 11:38:33,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 272 transitions, 552 flow. Second operand has 2 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 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) [2022-11-20 11:38:33,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:33,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 272 [2022-11-20 11:38:33,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:33,917 INFO L130 PetriNetUnfolder]: 8/351 cut-off events. [2022-11-20 11:38:33,917 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:38:33,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 351 events. 8/351 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1236 event pairs, 0 based on Foata normal form. 41/361 useless extension candidates. Maximal degree in co-relation 206. Up to 4 conditions per place. [2022-11-20 11:38:33,926 INFO L137 encePairwiseOnDemand]: 245/272 looper letters, 2 selfloop transitions, 0 changer transitions 0/243 dead transitions. [2022-11-20 11:38:33,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 498 flow [2022-11-20 11:38:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:38:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:38:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2022-11-20 11:38:33,952 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393382352941176 [2022-11-20 11:38:33,953 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2022-11-20 11:38:33,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2022-11-20 11:38:33,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:33,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2022-11-20 11:38:33,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.5) internal successors, (511), 2 states have internal predecessors, (511), 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) [2022-11-20 11:38:33,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 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) [2022-11-20 11:38:33,982 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 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) [2022-11-20 11:38:33,984 INFO L175 Difference]: Start difference. First operand has 242 places, 272 transitions, 552 flow. Second operand 2 states and 511 transitions. [2022-11-20 11:38:33,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 498 flow [2022-11-20 11:38:33,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:38:33,996 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 494 flow [2022-11-20 11:38:33,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2022-11-20 11:38:34,004 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, -1 predicate places. [2022-11-20 11:38:34,004 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 494 flow [2022-11-20 11:38:34,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 242.5) internal successors, (485), 2 states have internal predecessors, (485), 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) [2022-11-20 11:38:34,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:34,006 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] [2022-11-20 11:38:34,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:38:34,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-20 11:38:34,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:34,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1361762681, now seen corresponding path program 1 times [2022-11-20 11:38:34,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:34,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011346375] [2022-11-20 11:38:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:34,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:34,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011346375] [2022-11-20 11:38:34,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011346375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:34,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:34,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:34,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161629422] [2022-11-20 11:38:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:34,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:34,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:34,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:34,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-20 11:38:34,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2022-11-20 11:38:34,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:34,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-20 11:38:34,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:34,400 INFO L130 PetriNetUnfolder]: 8/355 cut-off events. [2022-11-20 11:38:34,400 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:38:34,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 355 events. 8/355 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1230 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 372. Up to 10 conditions per place. [2022-11-20 11:38:34,405 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 11 selfloop transitions, 2 changer transitions 0/247 dead transitions. [2022-11-20 11:38:34,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 247 transitions, 528 flow [2022-11-20 11:38:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2022-11-20 11:38:34,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-11-20 11:38:34,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2022-11-20 11:38:34,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2022-11-20 11:38:34,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:34,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2022-11-20 11:38:34,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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) [2022-11-20 11:38:34,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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) [2022-11-20 11:38:34,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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) [2022-11-20 11:38:34,418 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 494 flow. Second operand 3 states and 716 transitions. [2022-11-20 11:38:34,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 247 transitions, 528 flow [2022-11-20 11:38:34,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 247 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:38:34,429 INFO L231 Difference]: Finished difference. Result has 244 places, 244 transitions, 506 flow [2022-11-20 11:38:34,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=244, PETRI_TRANSITIONS=244} [2022-11-20 11:38:34,431 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 2 predicate places. [2022-11-20 11:38:34,431 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 244 transitions, 506 flow [2022-11-20 11:38:34,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2022-11-20 11:38:34,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:34,433 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] [2022-11-20 11:38:34,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:38:34,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-20 11:38:34,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1295369342, now seen corresponding path program 1 times [2022-11-20 11:38:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:34,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447634702] [2022-11-20 11:38:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:34,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:34,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447634702] [2022-11-20 11:38:34,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447634702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:34,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574236272] [2022-11-20 11:38:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:34,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:34,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:34,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:34,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:38:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:34,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:38:34,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:38:34,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:38:34,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574236272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:34,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:38:34,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:38:34,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773151063] [2022-11-20 11:38:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:34,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:38:34,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-20 11:38:34,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 244 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2022-11-20 11:38:34,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:34,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-20 11:38:34,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:34,982 INFO L130 PetriNetUnfolder]: 5/266 cut-off events. [2022-11-20 11:38:34,982 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:38:34,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 266 events. 5/266 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 702 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 286. Up to 7 conditions per place. [2022-11-20 11:38:34,986 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 9 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2022-11-20 11:38:34,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 246 transitions, 532 flow [2022-11-20 11:38:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-20 11:38:34,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-20 11:38:34,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-20 11:38:34,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-20 11:38:34,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:34,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-20 11:38:34,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 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) [2022-11-20 11:38:34,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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) [2022-11-20 11:38:34,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 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) [2022-11-20 11:38:34,998 INFO L175 Difference]: Start difference. First operand has 244 places, 244 transitions, 506 flow. Second operand 3 states and 714 transitions. [2022-11-20 11:38:34,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 246 transitions, 532 flow [2022-11-20 11:38:35,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 246 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:35,004 INFO L231 Difference]: Finished difference. Result has 246 places, 244 transitions, 512 flow [2022-11-20 11:38:35,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=246, PETRI_TRANSITIONS=244} [2022-11-20 11:38:35,008 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 4 predicate places. [2022-11-20 11:38:35,008 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 244 transitions, 512 flow [2022-11-20 11:38:35,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2022-11-20 11:38:35,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:35,010 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2022-11-20 11:38:35,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:35,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:35,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-20 11:38:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1447276067, now seen corresponding path program 1 times [2022-11-20 11:38:35,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:35,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797701739] [2022-11-20 11:38:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:35,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:35,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797701739] [2022-11-20 11:38:35,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797701739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:35,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193360159] [2022-11-20 11:38:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:35,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:35,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:35,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:35,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:38:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:35,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:38:35,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:35,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:38:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:35,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193360159] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:38:35,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:38:35,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:38:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801695969] [2022-11-20 11:38:35,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:38:35,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:38:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:38:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:38:35,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-20 11:38:35,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 244 transitions, 512 flow. Second operand has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 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) [2022-11-20 11:38:35,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:35,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-20 11:38:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:35,815 INFO L130 PetriNetUnfolder]: 5/273 cut-off events. [2022-11-20 11:38:35,815 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 11:38:35,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 273 events. 5/273 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 710 event pairs, 0 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 307. Up to 7 conditions per place. [2022-11-20 11:38:35,819 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 12 selfloop transitions, 9 changer transitions 0/254 dead transitions. [2022-11-20 11:38:35,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 254 transitions, 576 flow [2022-11-20 11:38:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:38:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:38:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-20 11:38:35,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8660130718954249 [2022-11-20 11:38:35,826 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-20 11:38:35,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-20 11:38:35,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:35,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-20 11:38:35,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 235.55555555555554) internal successors, (2120), 9 states have internal predecessors, (2120), 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) [2022-11-20 11:38:35,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 272.0) internal successors, (2720), 10 states have internal predecessors, (2720), 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) [2022-11-20 11:38:35,841 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 272.0) internal successors, (2720), 10 states have internal predecessors, (2720), 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) [2022-11-20 11:38:35,841 INFO L175 Difference]: Start difference. First operand has 246 places, 244 transitions, 512 flow. Second operand 9 states and 2120 transitions. [2022-11-20 11:38:35,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 254 transitions, 576 flow [2022-11-20 11:38:35,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 254 transitions, 572 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:38:35,849 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 558 flow [2022-11-20 11:38:35,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2022-11-20 11:38:35,852 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 13 predicate places. [2022-11-20 11:38:35,852 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 558 flow [2022-11-20 11:38:35,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 235.1) internal successors, (2351), 10 states have internal predecessors, (2351), 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) [2022-11-20 11:38:35,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:35,855 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-20 11:38:35,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:36,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-20 11:38:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash 631425085, now seen corresponding path program 2 times [2022-11-20 11:38:36,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:36,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859098634] [2022-11-20 11:38:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:36,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:36,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:36,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859098634] [2022-11-20 11:38:36,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859098634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895283064] [2022-11-20 11:38:36,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:38:36,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:36,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:36,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:36,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:38:36,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:38:36,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:38:36,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:38:36,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:36,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:38:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:36,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895283064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:38:36,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:38:36,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:38:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549313937] [2022-11-20 11:38:36,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:38:36,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:38:36,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:36,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:38:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:38:36,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-20 11:38:36,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 558 flow. Second operand has 18 states, 18 states have (on average 235.27777777777777) internal successors, (4235), 18 states have internal predecessors, (4235), 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) [2022-11-20 11:38:36,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:36,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-20 11:38:36,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:36,967 INFO L130 PetriNetUnfolder]: 5/293 cut-off events. [2022-11-20 11:38:36,969 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-20 11:38:36,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 293 events. 5/293 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 393. Up to 11 conditions per place. [2022-11-20 11:38:36,973 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 20 selfloop transitions, 21 changer transitions 0/274 dead transitions. [2022-11-20 11:38:36,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 274 transitions, 748 flow [2022-11-20 11:38:36,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:38:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:38:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4938 transitions. [2022-11-20 11:38:36,986 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644957983193278 [2022-11-20 11:38:36,986 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4938 transitions. [2022-11-20 11:38:36,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4938 transitions. [2022-11-20 11:38:36,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:36,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4938 transitions. [2022-11-20 11:38:37,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 235.14285714285714) internal successors, (4938), 21 states have internal predecessors, (4938), 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) [2022-11-20 11:38:37,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 272.0) internal successors, (5984), 22 states have internal predecessors, (5984), 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) [2022-11-20 11:38:37,020 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 272.0) internal successors, (5984), 22 states have internal predecessors, (5984), 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) [2022-11-20 11:38:37,020 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 558 flow. Second operand 21 states and 4938 transitions. [2022-11-20 11:38:37,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 274 transitions, 748 flow [2022-11-20 11:38:37,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 274 transitions, 734 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:37,030 INFO L231 Difference]: Finished difference. Result has 279 places, 263 transitions, 682 flow [2022-11-20 11:38:37,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=682, PETRI_PLACES=279, PETRI_TRANSITIONS=263} [2022-11-20 11:38:37,034 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 37 predicate places. [2022-11-20 11:38:37,034 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 263 transitions, 682 flow [2022-11-20 11:38:37,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 235.27777777777777) internal successors, (4235), 18 states have internal predecessors, (4235), 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) [2022-11-20 11:38:37,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:37,037 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 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] [2022-11-20 11:38:37,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:37,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:37,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-20 11:38:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:37,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2120463107, now seen corresponding path program 3 times [2022-11-20 11:38:37,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:37,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772876829] [2022-11-20 11:38:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:37,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772876829] [2022-11-20 11:38:37,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772876829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:37,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381805287] [2022-11-20 11:38:37,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:38:37,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:37,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:37,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:37,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:38:37,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 11:38:37,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:38:37,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:38:37,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:38,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:38:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:38:38,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381805287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:38:38,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:38:38,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:38:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086771635] [2022-11-20 11:38:38,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:38:38,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:38:38,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:38:38,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:38:38,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-20 11:38:38,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 263 transitions, 682 flow. Second operand has 23 states, 23 states have (on average 235.43478260869566) internal successors, (5415), 23 states have internal predecessors, (5415), 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) [2022-11-20 11:38:38,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:38,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-20 11:38:38,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:38,952 INFO L130 PetriNetUnfolder]: 5/308 cut-off events. [2022-11-20 11:38:38,953 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-20 11:38:38,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 308 events. 5/308 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 699 event pairs, 0 based on Foata normal form. 3/291 useless extension candidates. Maximal degree in co-relation 489. Up to 17 conditions per place. [2022-11-20 11:38:38,958 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 26 selfloop transitions, 30 changer transitions 0/289 dead transitions. [2022-11-20 11:38:38,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 289 transitions, 940 flow [2022-11-20 11:38:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:38:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:38:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7049 transitions. [2022-11-20 11:38:39,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638480392156863 [2022-11-20 11:38:39,002 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7049 transitions. [2022-11-20 11:38:39,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7049 transitions. [2022-11-20 11:38:39,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:39,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7049 transitions. [2022-11-20 11:38:39,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 234.96666666666667) internal successors, (7049), 30 states have internal predecessors, (7049), 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) [2022-11-20 11:38:39,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 272.0) internal successors, (8432), 31 states have internal predecessors, (8432), 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) [2022-11-20 11:38:39,076 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 272.0) internal successors, (8432), 31 states have internal predecessors, (8432), 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) [2022-11-20 11:38:39,076 INFO L175 Difference]: Start difference. First operand has 279 places, 263 transitions, 682 flow. Second operand 30 states and 7049 transitions. [2022-11-20 11:38:39,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 289 transitions, 940 flow [2022-11-20 11:38:39,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 289 transitions, 910 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-20 11:38:39,091 INFO L231 Difference]: Finished difference. Result has 306 places, 273 transitions, 810 flow [2022-11-20 11:38:39,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=810, PETRI_PLACES=306, PETRI_TRANSITIONS=273} [2022-11-20 11:38:39,095 INFO L288 CegarLoopForPetriNet]: 242 programPoint places, 64 predicate places. [2022-11-20 11:38:39,095 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 273 transitions, 810 flow [2022-11-20 11:38:39,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 235.43478260869566) internal successors, (5415), 23 states have internal predecessors, (5415), 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) [2022-11-20 11:38:39,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:39,098 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 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] [2022-11-20 11:38:39,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:38:39,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:39,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-20 11:38:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash 661327988, now seen corresponding path program 4 times [2022-11-20 11:38:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:39,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34000926] [2022-11-20 11:38:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:39,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:38:39,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:38:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:38:39,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:38:39,419 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:38:39,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 11:38:39,423 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-20 11:38:39,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-20 11:38:39,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-20 11:38:39,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-20 11:38:39,424 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-20 11:38:39,425 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-20 11:38:39,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-20 11:38:39,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-20 11:38:39,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-20 11:38:39,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-20 11:38:39,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-20 11:38:39,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-20 11:38:39,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-20 11:38:39,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-20 11:38:39,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-20 11:38:39,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-20 11:38:39,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:38:39,434 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-20 11:38:39,437 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:38:39,437 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:38:39,519 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:38:39,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 378 transitions, 774 flow [2022-11-20 11:38:39,685 INFO L130 PetriNetUnfolder]: 82/655 cut-off events. [2022-11-20 11:38:39,685 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 11:38:39,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 655 events. 82/655 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3460 event pairs, 0 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 397. Up to 12 conditions per place. [2022-11-20 11:38:39,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 378 transitions, 774 flow [2022-11-20 11:38:39,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 378 transitions, 774 flow [2022-11-20 11:38:39,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:38:39,708 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;@4b420fcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:38:39,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 11:38:39,715 INFO L130 PetriNetUnfolder]: 7/80 cut-off events. [2022-11-20 11:38:39,715 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:38:39,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:39,716 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] [2022-11-20 11:38:39,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:39,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2140725046, now seen corresponding path program 1 times [2022-11-20 11:38:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:39,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767645296] [2022-11-20 11:38:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:39,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:39,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767645296] [2022-11-20 11:38:39,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767645296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:39,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:39,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:38:39,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885731118] [2022-11-20 11:38:39,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:38:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:39,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:38:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:38:39,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 378 [2022-11-20 11:38:39,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 378 transitions, 774 flow. Second operand has 2 states, 2 states have (on average 333.5) internal successors, (667), 2 states have internal predecessors, (667), 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) [2022-11-20 11:38:39,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:39,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 378 [2022-11-20 11:38:39,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:39,903 INFO L130 PetriNetUnfolder]: 14/582 cut-off events. [2022-11-20 11:38:39,903 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-20 11:38:39,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 582 events. 14/582 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2879 event pairs, 0 based on Foata normal form. 82/612 useless extension candidates. Maximal degree in co-relation 355. Up to 7 conditions per place. [2022-11-20 11:38:39,918 INFO L137 encePairwiseOnDemand]: 339/378 looper letters, 4 selfloop transitions, 0 changer transitions 0/336 dead transitions. [2022-11-20 11:38:39,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 336 transitions, 698 flow [2022-11-20 11:38:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:38:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:38:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 707 transitions. [2022-11-20 11:38:39,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9351851851851852 [2022-11-20 11:38:39,921 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 707 transitions. [2022-11-20 11:38:39,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 707 transitions. [2022-11-20 11:38:39,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:39,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 707 transitions. [2022-11-20 11:38:39,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 353.5) internal successors, (707), 2 states have internal predecessors, (707), 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) [2022-11-20 11:38:39,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 378.0) internal successors, (1134), 3 states have internal predecessors, (1134), 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) [2022-11-20 11:38:39,926 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 378.0) internal successors, (1134), 3 states have internal predecessors, (1134), 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) [2022-11-20 11:38:39,927 INFO L175 Difference]: Start difference. First operand has 335 places, 378 transitions, 774 flow. Second operand 2 states and 707 transitions. [2022-11-20 11:38:39,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 336 transitions, 698 flow [2022-11-20 11:38:39,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 336 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:38:39,937 INFO L231 Difference]: Finished difference. Result has 333 places, 336 transitions, 690 flow [2022-11-20 11:38:39,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=690, PETRI_PLACES=333, PETRI_TRANSITIONS=336} [2022-11-20 11:38:39,939 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, -2 predicate places. [2022-11-20 11:38:39,939 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 336 transitions, 690 flow [2022-11-20 11:38:39,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 333.5) internal successors, (667), 2 states have internal predecessors, (667), 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) [2022-11-20 11:38:39,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:39,940 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] [2022-11-20 11:38:39,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:38:39,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash 43871033, now seen corresponding path program 1 times [2022-11-20 11:38:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:39,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156972665] [2022-11-20 11:38:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:40,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:40,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156972665] [2022-11-20 11:38:40,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156972665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:40,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:40,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055103886] [2022-11-20 11:38:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:40,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 378 [2022-11-20 11:38:40,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 336 transitions, 690 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2022-11-20 11:38:40,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:40,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 378 [2022-11-20 11:38:40,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:40,193 INFO L130 PetriNetUnfolder]: 14/586 cut-off events. [2022-11-20 11:38:40,194 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-20 11:38:40,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 586 events. 14/586 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2885 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 614. Up to 14 conditions per place. [2022-11-20 11:38:40,206 INFO L137 encePairwiseOnDemand]: 375/378 looper letters, 13 selfloop transitions, 2 changer transitions 0/340 dead transitions. [2022-11-20 11:38:40,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 340 transitions, 728 flow [2022-11-20 11:38:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2022-11-20 11:38:40,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8738977072310405 [2022-11-20 11:38:40,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2022-11-20 11:38:40,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2022-11-20 11:38:40,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:40,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2022-11-20 11:38:40,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 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) [2022-11-20 11:38:40,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 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) [2022-11-20 11:38:40,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 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) [2022-11-20 11:38:40,216 INFO L175 Difference]: Start difference. First operand has 333 places, 336 transitions, 690 flow. Second operand 3 states and 991 transitions. [2022-11-20 11:38:40,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 340 transitions, 728 flow [2022-11-20 11:38:40,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 340 transitions, 728 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:38:40,223 INFO L231 Difference]: Finished difference. Result has 336 places, 337 transitions, 702 flow [2022-11-20 11:38:40,224 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=336, PETRI_TRANSITIONS=337} [2022-11-20 11:38:40,225 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 1 predicate places. [2022-11-20 11:38:40,226 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 337 transitions, 702 flow [2022-11-20 11:38:40,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2022-11-20 11:38:40,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:40,227 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] [2022-11-20 11:38:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:38:40,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:40,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash -462617412, now seen corresponding path program 1 times [2022-11-20 11:38:40,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:40,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896252196] [2022-11-20 11:38:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:40,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:40,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896252196] [2022-11-20 11:38:40,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896252196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:40,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060847319] [2022-11-20 11:38:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:40,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:40,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:40,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:38:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:40,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:38:40,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:38:40,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:38:40,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060847319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:40,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:38:40,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:38:40,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033050488] [2022-11-20 11:38:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:40,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:38:40,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 378 [2022-11-20 11:38:40,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 337 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2022-11-20 11:38:40,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:40,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 378 [2022-11-20 11:38:40,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:40,629 INFO L130 PetriNetUnfolder]: 11/497 cut-off events. [2022-11-20 11:38:40,630 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-20 11:38:40,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 497 events. 11/497 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2235 event pairs, 0 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 533. Up to 16 conditions per place. [2022-11-20 11:38:40,641 INFO L137 encePairwiseOnDemand]: 375/378 looper letters, 13 selfloop transitions, 2 changer transitions 0/341 dead transitions. [2022-11-20 11:38:40,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 341 transitions, 740 flow [2022-11-20 11:38:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2022-11-20 11:38:40,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8738977072310405 [2022-11-20 11:38:40,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 991 transitions. [2022-11-20 11:38:40,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 991 transitions. [2022-11-20 11:38:40,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:40,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 991 transitions. [2022-11-20 11:38:40,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.3333333333333) internal successors, (991), 3 states have internal predecessors, (991), 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) [2022-11-20 11:38:40,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 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) [2022-11-20 11:38:40,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 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) [2022-11-20 11:38:40,653 INFO L175 Difference]: Start difference. First operand has 336 places, 337 transitions, 702 flow. Second operand 3 states and 991 transitions. [2022-11-20 11:38:40,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 341 transitions, 740 flow [2022-11-20 11:38:40,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 341 transitions, 738 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:40,661 INFO L231 Difference]: Finished difference. Result has 338 places, 338 transitions, 712 flow [2022-11-20 11:38:40,662 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=712, PETRI_PLACES=338, PETRI_TRANSITIONS=338} [2022-11-20 11:38:40,663 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 3 predicate places. [2022-11-20 11:38:40,664 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 338 transitions, 712 flow [2022-11-20 11:38:40,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 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) [2022-11-20 11:38:40,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:40,664 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] [2022-11-20 11:38:40,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:40,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:38:40,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:40,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1376023239, now seen corresponding path program 1 times [2022-11-20 11:38:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:40,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251944552] [2022-11-20 11:38:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:40,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:38:40,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:40,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251944552] [2022-11-20 11:38:40,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251944552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:40,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9489179] [2022-11-20 11:38:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:40,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:40,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:40,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:38:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:41,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:38:41,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:38:41,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:38:41,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9489179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:41,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:38:41,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:38:41,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468449034] [2022-11-20 11:38:41,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:41,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:41,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:41,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:41,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:38:41,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-20 11:38:41,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 338 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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) [2022-11-20 11:38:41,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:41,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-20 11:38:41,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:41,357 INFO L130 PetriNetUnfolder]: 13/665 cut-off events. [2022-11-20 11:38:41,357 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 11:38:41,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 665 events. 13/665 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2923 event pairs, 0 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 714. Up to 21 conditions per place. [2022-11-20 11:38:41,376 INFO L137 encePairwiseOnDemand]: 375/378 looper letters, 14 selfloop transitions, 2 changer transitions 0/342 dead transitions. [2022-11-20 11:38:41,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 342 transitions, 752 flow [2022-11-20 11:38:41,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:41,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2022-11-20 11:38:41,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8721340388007055 [2022-11-20 11:38:41,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2022-11-20 11:38:41,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2022-11-20 11:38:41,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:41,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2022-11-20 11:38:41,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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) [2022-11-20 11:38:41,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 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) [2022-11-20 11:38:41,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 378.0) internal successors, (1512), 4 states have internal predecessors, (1512), 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) [2022-11-20 11:38:41,388 INFO L175 Difference]: Start difference. First operand has 338 places, 338 transitions, 712 flow. Second operand 3 states and 989 transitions. [2022-11-20 11:38:41,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 342 transitions, 752 flow [2022-11-20 11:38:41,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 342 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:41,397 INFO L231 Difference]: Finished difference. Result has 340 places, 339 transitions, 722 flow [2022-11-20 11:38:41,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=722, PETRI_PLACES=340, PETRI_TRANSITIONS=339} [2022-11-20 11:38:41,400 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 5 predicate places. [2022-11-20 11:38:41,400 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 339 transitions, 722 flow [2022-11-20 11:38:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 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) [2022-11-20 11:38:41,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:41,401 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 11:38:41,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:41,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:38:41,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:41,608 INFO L85 PathProgramCache]: Analyzing trace with hash 961429171, now seen corresponding path program 1 times [2022-11-20 11:38:41,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:41,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499213889] [2022-11-20 11:38:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:41,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:41,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:41,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499213889] [2022-11-20 11:38:41,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499213889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:41,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134450820] [2022-11-20 11:38:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:41,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:41,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:41,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:41,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:38:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:41,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:38:41,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:41,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:38:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:41,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134450820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:38:41,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:38:41,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:38:41,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333884952] [2022-11-20 11:38:41,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:38:41,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:38:41,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:38:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:38:41,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-20 11:38:41,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 339 transitions, 722 flow. Second operand has 10 states, 10 states have (on average 326.2) internal successors, (3262), 10 states have internal predecessors, (3262), 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) [2022-11-20 11:38:41,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:41,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-20 11:38:41,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:42,196 INFO L130 PetriNetUnfolder]: 13/672 cut-off events. [2022-11-20 11:38:42,196 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 11:38:42,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 672 events. 13/672 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2918 event pairs, 0 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 728. Up to 11 conditions per place. [2022-11-20 11:38:42,212 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 14 selfloop transitions, 9 changer transitions 0/349 dead transitions. [2022-11-20 11:38:42,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 349 transitions, 790 flow [2022-11-20 11:38:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:38:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:38:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2941 transitions. [2022-11-20 11:38:42,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644914756025868 [2022-11-20 11:38:42,219 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2941 transitions. [2022-11-20 11:38:42,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2941 transitions. [2022-11-20 11:38:42,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:42,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2941 transitions. [2022-11-20 11:38:42,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 326.77777777777777) internal successors, (2941), 9 states have internal predecessors, (2941), 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) [2022-11-20 11:38:42,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 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) [2022-11-20 11:38:42,236 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 378.0) internal successors, (3780), 10 states have internal predecessors, (3780), 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) [2022-11-20 11:38:42,236 INFO L175 Difference]: Start difference. First operand has 340 places, 339 transitions, 722 flow. Second operand 9 states and 2941 transitions. [2022-11-20 11:38:42,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 349 transitions, 790 flow [2022-11-20 11:38:42,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 349 transitions, 788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:42,244 INFO L231 Difference]: Finished difference. Result has 350 places, 345 transitions, 770 flow [2022-11-20 11:38:42,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=770, PETRI_PLACES=350, PETRI_TRANSITIONS=345} [2022-11-20 11:38:42,245 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 15 predicate places. [2022-11-20 11:38:42,245 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 345 transitions, 770 flow [2022-11-20 11:38:42,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.2) internal successors, (3262), 10 states have internal predecessors, (3262), 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) [2022-11-20 11:38:42,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:42,247 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 11:38:42,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:42,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:38:42,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:42,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash -140855085, now seen corresponding path program 2 times [2022-11-20 11:38:42,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:42,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389149493] [2022-11-20 11:38:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:42,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:42,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389149493] [2022-11-20 11:38:42,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389149493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:42,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068491440] [2022-11-20 11:38:42,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:38:42,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:42,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:42,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:42,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:38:42,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:38:42,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:38:42,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:38:42,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:42,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:38:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:42,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068491440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:38:42,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:38:42,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-20 11:38:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360751693] [2022-11-20 11:38:42,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:38:42,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:38:42,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:42,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:38:42,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:38:42,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-20 11:38:42,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 345 transitions, 770 flow. Second operand has 18 states, 18 states have (on average 326.3333333333333) internal successors, (5874), 18 states have internal predecessors, (5874), 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) [2022-11-20 11:38:42,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:42,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-20 11:38:42,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:43,398 INFO L130 PetriNetUnfolder]: 13/692 cut-off events. [2022-11-20 11:38:43,398 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-11-20 11:38:43,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 692 events. 13/692 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2919 event pairs, 0 based on Foata normal form. 4/644 useless extension candidates. Maximal degree in co-relation 814. Up to 11 conditions per place. [2022-11-20 11:38:43,418 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 22 selfloop transitions, 21 changer transitions 0/369 dead transitions. [2022-11-20 11:38:43,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 369 transitions, 964 flow [2022-11-20 11:38:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:38:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:38:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6851 transitions. [2022-11-20 11:38:43,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.863063744016125 [2022-11-20 11:38:43,439 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6851 transitions. [2022-11-20 11:38:43,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6851 transitions. [2022-11-20 11:38:43,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:43,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6851 transitions. [2022-11-20 11:38:43,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 326.23809523809524) internal successors, (6851), 21 states have internal predecessors, (6851), 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) [2022-11-20 11:38:43,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 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) [2022-11-20 11:38:43,480 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 378.0) internal successors, (8316), 22 states have internal predecessors, (8316), 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) [2022-11-20 11:38:43,480 INFO L175 Difference]: Start difference. First operand has 350 places, 345 transitions, 770 flow. Second operand 21 states and 6851 transitions. [2022-11-20 11:38:43,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 369 transitions, 964 flow [2022-11-20 11:38:43,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 369 transitions, 950 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:43,489 INFO L231 Difference]: Finished difference. Result has 374 places, 358 transitions, 894 flow [2022-11-20 11:38:43,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=894, PETRI_PLACES=374, PETRI_TRANSITIONS=358} [2022-11-20 11:38:43,491 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 39 predicate places. [2022-11-20 11:38:43,491 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 358 transitions, 894 flow [2022-11-20 11:38:43,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 326.3333333333333) internal successors, (5874), 18 states have internal predecessors, (5874), 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) [2022-11-20 11:38:43,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:43,494 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 11:38:43,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:43,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:38:43,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash -115919597, now seen corresponding path program 3 times [2022-11-20 11:38:43,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:43,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875705775] [2022-11-20 11:38:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:43,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:44,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:44,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875705775] [2022-11-20 11:38:44,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875705775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:44,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627666574] [2022-11-20 11:38:44,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:38:44,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:44,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:44,112 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:44,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:38:44,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 11:38:44,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:38:44,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:38:44,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:44,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:38:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:38:44,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627666574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:38:44,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:38:44,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-20 11:38:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456481903] [2022-11-20 11:38:44,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:38:44,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:38:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:44,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:38:44,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:38:44,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 378 [2022-11-20 11:38:44,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 358 transitions, 894 flow. Second operand has 23 states, 23 states have (on average 326.4782608695652) internal successors, (7509), 23 states have internal predecessors, (7509), 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) [2022-11-20 11:38:44,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:44,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 378 [2022-11-20 11:38:44,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:45,446 INFO L130 PetriNetUnfolder]: 13/707 cut-off events. [2022-11-20 11:38:45,446 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-20 11:38:45,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 707 events. 13/707 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2919 event pairs, 0 based on Foata normal form. 3/658 useless extension candidates. Maximal degree in co-relation 910. Up to 17 conditions per place. [2022-11-20 11:38:45,479 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 28 selfloop transitions, 30 changer transitions 0/384 dead transitions. [2022-11-20 11:38:45,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 384 transitions, 1156 flow [2022-11-20 11:38:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:38:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 11:38:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9781 transitions. [2022-11-20 11:38:45,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8625220458553792 [2022-11-20 11:38:45,496 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9781 transitions. [2022-11-20 11:38:45,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9781 transitions. [2022-11-20 11:38:45,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:45,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9781 transitions. [2022-11-20 11:38:45,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 326.03333333333336) internal successors, (9781), 30 states have internal predecessors, (9781), 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) [2022-11-20 11:38:45,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 378.0) internal successors, (11718), 31 states have internal predecessors, (11718), 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) [2022-11-20 11:38:45,551 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 378.0) internal successors, (11718), 31 states have internal predecessors, (11718), 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) [2022-11-20 11:38:45,551 INFO L175 Difference]: Start difference. First operand has 374 places, 358 transitions, 894 flow. Second operand 30 states and 9781 transitions. [2022-11-20 11:38:45,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 384 transitions, 1156 flow [2022-11-20 11:38:45,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 384 transitions, 1126 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-20 11:38:45,562 INFO L231 Difference]: Finished difference. Result has 401 places, 368 transitions, 1022 flow [2022-11-20 11:38:45,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1022, PETRI_PLACES=401, PETRI_TRANSITIONS=368} [2022-11-20 11:38:45,565 INFO L288 CegarLoopForPetriNet]: 335 programPoint places, 66 predicate places. [2022-11-20 11:38:45,565 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 368 transitions, 1022 flow [2022-11-20 11:38:45,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 326.4782608695652) internal successors, (7509), 23 states have internal predecessors, (7509), 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) [2022-11-20 11:38:45,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:45,569 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-20 11:38:45,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:45,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:38:45,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-20 11:38:45,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2143744048, now seen corresponding path program 4 times [2022-11-20 11:38:45,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:45,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526380534] [2022-11-20 11:38:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:45,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:38:45,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:38:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:38:45,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:38:45,899 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:38:45,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-20 11:38:45,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-20 11:38:45,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-20 11:38:45,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-20 11:38:45,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-20 11:38:45,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-20 11:38:45,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-20 11:38:45,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-20 11:38:45,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-20 11:38:45,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-20 11:38:45,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-20 11:38:45,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-20 11:38:45,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-20 11:38:45,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-20 11:38:45,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-20 11:38:45,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-20 11:38:45,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-20 11:38:45,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-20 11:38:45,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-20 11:38:45,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-20 11:38:45,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-20 11:38:45,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-20 11:38:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:38:45,907 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2022-11-20 11:38:45,909 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:38:45,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:38:46,019 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:38:46,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 484 transitions, 998 flow [2022-11-20 11:38:46,317 INFO L130 PetriNetUnfolder]: 120/960 cut-off events. [2022-11-20 11:38:46,317 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 11:38:46,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 960 events. 120/960 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5628 event pairs, 1 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 663. Up to 16 conditions per place. [2022-11-20 11:38:46,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 484 transitions, 998 flow [2022-11-20 11:38:46,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 428 places, 484 transitions, 998 flow [2022-11-20 11:38:46,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:38:46,364 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;@4b420fcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:38:46,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-20 11:38:46,371 INFO L130 PetriNetUnfolder]: 7/81 cut-off events. [2022-11-20 11:38:46,372 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:38:46,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:46,372 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] [2022-11-20 11:38:46,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:38:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash -432997194, now seen corresponding path program 1 times [2022-11-20 11:38:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:46,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585445153] [2022-11-20 11:38:46,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:46,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:46,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585445153] [2022-11-20 11:38:46,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585445153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:46,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:46,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:38:46,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492039915] [2022-11-20 11:38:46,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:46,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:38:46,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:38:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:38:46,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 484 [2022-11-20 11:38:46,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 484 transitions, 998 flow. Second operand has 2 states, 2 states have (on average 424.5) internal successors, (849), 2 states have internal predecessors, (849), 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) [2022-11-20 11:38:46,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:46,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 484 [2022-11-20 11:38:46,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:46,723 INFO L130 PetriNetUnfolder]: 23/856 cut-off events. [2022-11-20 11:38:46,723 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-20 11:38:46,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 856 events. 23/856 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4977 event pairs, 1 based on Foata normal form. 173/952 useless extension candidates. Maximal degree in co-relation 596. Up to 16 conditions per place. [2022-11-20 11:38:46,750 INFO L137 encePairwiseOnDemand]: 433/484 looper letters, 6 selfloop transitions, 0 changer transitions 0/429 dead transitions. [2022-11-20 11:38:46,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 429 transitions, 900 flow [2022-11-20 11:38:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:38:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:38:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-11-20 11:38:46,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9328512396694215 [2022-11-20 11:38:46,753 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-11-20 11:38:46,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-11-20 11:38:46,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:46,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-11-20 11:38:46,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 451.5) internal successors, (903), 2 states have internal predecessors, (903), 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) [2022-11-20 11:38:46,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 484.0) internal successors, (1452), 3 states have internal predecessors, (1452), 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) [2022-11-20 11:38:46,759 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 484.0) internal successors, (1452), 3 states have internal predecessors, (1452), 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) [2022-11-20 11:38:46,759 INFO L175 Difference]: Start difference. First operand has 428 places, 484 transitions, 998 flow. Second operand 2 states and 903 transitions. [2022-11-20 11:38:46,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 429 transitions, 900 flow [2022-11-20 11:38:46,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 429 transitions, 900 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:38:46,769 INFO L231 Difference]: Finished difference. Result has 425 places, 429 transitions, 888 flow [2022-11-20 11:38:46,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=888, PETRI_PLACES=425, PETRI_TRANSITIONS=429} [2022-11-20 11:38:46,771 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, -3 predicate places. [2022-11-20 11:38:46,772 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 429 transitions, 888 flow [2022-11-20 11:38:46,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 424.5) internal successors, (849), 2 states have internal predecessors, (849), 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) [2022-11-20 11:38:46,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:46,772 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] [2022-11-20 11:38:46,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:38:46,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:38:46,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:46,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1765116089, now seen corresponding path program 1 times [2022-11-20 11:38:46,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:46,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121408474] [2022-11-20 11:38:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:46,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:46,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:46,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121408474] [2022-11-20 11:38:46,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121408474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:46,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:46,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:38:46,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452162430] [2022-11-20 11:38:46,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:46,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:46,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:38:46,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 484 [2022-11-20 11:38:46,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 429 transitions, 888 flow. Second operand has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 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) [2022-11-20 11:38:46,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:46,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 484 [2022-11-20 11:38:46,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:47,152 INFO L130 PetriNetUnfolder]: 23/860 cut-off events. [2022-11-20 11:38:47,152 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-11-20 11:38:47,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 860 events. 23/860 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4981 event pairs, 1 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 910. Up to 23 conditions per place. [2022-11-20 11:38:47,172 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 15 selfloop transitions, 2 changer transitions 0/433 dead transitions. [2022-11-20 11:38:47,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 433 transitions, 930 flow [2022-11-20 11:38:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2022-11-20 11:38:47,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-20 11:38:47,175 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2022-11-20 11:38:47,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2022-11-20 11:38:47,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:47,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2022-11-20 11:38:47,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 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) [2022-11-20 11:38:47,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 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) [2022-11-20 11:38:47,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 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) [2022-11-20 11:38:47,182 INFO L175 Difference]: Start difference. First operand has 425 places, 429 transitions, 888 flow. Second operand 3 states and 1266 transitions. [2022-11-20 11:38:47,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 433 transitions, 930 flow [2022-11-20 11:38:47,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 930 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:38:47,190 INFO L231 Difference]: Finished difference. Result has 428 places, 430 transitions, 900 flow [2022-11-20 11:38:47,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=900, PETRI_PLACES=428, PETRI_TRANSITIONS=430} [2022-11-20 11:38:47,192 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 0 predicate places. [2022-11-20 11:38:47,192 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 430 transitions, 900 flow [2022-11-20 11:38:47,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 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) [2022-11-20 11:38:47,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:47,193 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] [2022-11-20 11:38:47,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:38:47,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:38:47,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:47,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1330847776, now seen corresponding path program 1 times [2022-11-20 11:38:47,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:47,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219188101] [2022-11-20 11:38:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:47,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:47,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:47,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219188101] [2022-11-20 11:38:47,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219188101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:47,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2405184] [2022-11-20 11:38:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:47,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:47,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:47,259 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:47,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:38:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:47,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:38:47,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:38:47,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:38:47,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2405184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:47,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:38:47,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:38:47,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176958642] [2022-11-20 11:38:47,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:47,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:47,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:38:47,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 416 out of 484 [2022-11-20 11:38:47,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 430 transitions, 900 flow. Second operand has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 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) [2022-11-20 11:38:47,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:47,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 416 of 484 [2022-11-20 11:38:47,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:47,684 INFO L130 PetriNetUnfolder]: 20/771 cut-off events. [2022-11-20 11:38:47,684 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 11:38:47,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 771 events. 20/771 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4328 event pairs, 1 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 834. Up to 30 conditions per place. [2022-11-20 11:38:47,711 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 15 selfloop transitions, 2 changer transitions 0/434 dead transitions. [2022-11-20 11:38:47,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 434 transitions, 942 flow [2022-11-20 11:38:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2022-11-20 11:38:47,714 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-20 11:38:47,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2022-11-20 11:38:47,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2022-11-20 11:38:47,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:47,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2022-11-20 11:38:47,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 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) [2022-11-20 11:38:47,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 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) [2022-11-20 11:38:47,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 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) [2022-11-20 11:38:47,722 INFO L175 Difference]: Start difference. First operand has 428 places, 430 transitions, 900 flow. Second operand 3 states and 1266 transitions. [2022-11-20 11:38:47,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 434 transitions, 942 flow [2022-11-20 11:38:47,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 434 transitions, 940 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:47,732 INFO L231 Difference]: Finished difference. Result has 430 places, 431 transitions, 910 flow [2022-11-20 11:38:47,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=910, PETRI_PLACES=430, PETRI_TRANSITIONS=431} [2022-11-20 11:38:47,733 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 2 predicate places. [2022-11-20 11:38:47,734 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 431 transitions, 910 flow [2022-11-20 11:38:47,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 417.0) internal successors, (1251), 3 states have internal predecessors, (1251), 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) [2022-11-20 11:38:47,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:47,735 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] [2022-11-20 11:38:47,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:47,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:47,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:38:47,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash -850739181, now seen corresponding path program 1 times [2022-11-20 11:38:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:47,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937467970] [2022-11-20 11:38:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:47,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:38:48,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937467970] [2022-11-20 11:38:48,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937467970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:48,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366568546] [2022-11-20 11:38:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:48,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:48,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:48,034 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:48,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:38:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:48,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:38:48,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:48,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:38:48,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:38:48,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366568546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:48,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:38:48,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 11:38:48,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647273695] [2022-11-20 11:38:48,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:48,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:38:48,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:38:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:38:48,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 484 [2022-11-20 11:38:48,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 431 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 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) [2022-11-20 11:38:48,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:48,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 484 [2022-11-20 11:38:48,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:48,613 INFO L130 PetriNetUnfolder]: 23/1023 cut-off events. [2022-11-20 11:38:48,614 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-20 11:38:48,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 1023 events. 23/1023 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5637 event pairs, 1 based on Foata normal form. 0/938 useless extension candidates. Maximal degree in co-relation 1106. Up to 36 conditions per place. [2022-11-20 11:38:48,658 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 16 selfloop transitions, 2 changer transitions 0/435 dead transitions. [2022-11-20 11:38:48,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 435 transitions, 954 flow [2022-11-20 11:38:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:38:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:38:48,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2022-11-20 11:38:48,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705234159779615 [2022-11-20 11:38:48,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2022-11-20 11:38:48,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2022-11-20 11:38:48,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:48,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2022-11-20 11:38:48,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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) [2022-11-20 11:38:48,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 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) [2022-11-20 11:38:48,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 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) [2022-11-20 11:38:48,668 INFO L175 Difference]: Start difference. First operand has 430 places, 431 transitions, 910 flow. Second operand 3 states and 1264 transitions. [2022-11-20 11:38:48,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 435 transitions, 954 flow [2022-11-20 11:38:48,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 435 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:48,679 INFO L231 Difference]: Finished difference. Result has 432 places, 432 transitions, 920 flow [2022-11-20 11:38:48,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=920, PETRI_PLACES=432, PETRI_TRANSITIONS=432} [2022-11-20 11:38:48,680 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 4 predicate places. [2022-11-20 11:38:48,681 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 432 transitions, 920 flow [2022-11-20 11:38:48,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 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) [2022-11-20 11:38:48,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:48,682 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] [2022-11-20 11:38:48,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:48,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:48,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:38:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1732726184, now seen corresponding path program 1 times [2022-11-20 11:38:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:48,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179271216] [2022-11-20 11:38:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:48,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:48,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179271216] [2022-11-20 11:38:48,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179271216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:48,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109524918] [2022-11-20 11:38:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:48,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:48,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:48,995 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:49,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:38:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:49,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:38:49,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:49,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:38:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:49,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109524918] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:38:49,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:38:49,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 11:38:49,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319220481] [2022-11-20 11:38:49,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:38:49,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:38:49,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:38:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:38:49,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 484 [2022-11-20 11:38:49,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 432 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 417.1) internal successors, (4171), 10 states have internal predecessors, (4171), 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) [2022-11-20 11:38:49,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:49,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 484 [2022-11-20 11:38:49,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:38:49,749 INFO L130 PetriNetUnfolder]: 23/1030 cut-off events. [2022-11-20 11:38:49,749 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-20 11:38:49,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 1030 events. 23/1030 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5610 event pairs, 1 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 1115. Up to 20 conditions per place. [2022-11-20 11:38:49,819 INFO L137 encePairwiseOnDemand]: 478/484 looper letters, 16 selfloop transitions, 9 changer transitions 0/442 dead transitions. [2022-11-20 11:38:49,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 442 transitions, 992 flow [2022-11-20 11:38:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:38:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:38:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3762 transitions. [2022-11-20 11:38:49,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-11-20 11:38:49,827 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3762 transitions. [2022-11-20 11:38:49,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3762 transitions. [2022-11-20 11:38:49,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:38:49,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3762 transitions. [2022-11-20 11:38:49,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 418.0) internal successors, (3762), 9 states have internal predecessors, (3762), 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) [2022-11-20 11:38:49,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 484.0) internal successors, (4840), 10 states have internal predecessors, (4840), 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) [2022-11-20 11:38:49,848 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 484.0) internal successors, (4840), 10 states have internal predecessors, (4840), 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) [2022-11-20 11:38:49,848 INFO L175 Difference]: Start difference. First operand has 432 places, 432 transitions, 920 flow. Second operand 9 states and 3762 transitions. [2022-11-20 11:38:49,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 442 transitions, 992 flow [2022-11-20 11:38:49,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 442 transitions, 990 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:38:49,860 INFO L231 Difference]: Finished difference. Result has 442 places, 438 transitions, 968 flow [2022-11-20 11:38:49,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=442, PETRI_TRANSITIONS=438} [2022-11-20 11:38:49,861 INFO L288 CegarLoopForPetriNet]: 428 programPoint places, 14 predicate places. [2022-11-20 11:38:49,861 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 438 transitions, 968 flow [2022-11-20 11:38:49,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 417.1) internal successors, (4171), 10 states have internal predecessors, (4171), 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) [2022-11-20 11:38:49,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:38:49,864 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2022-11-20 11:38:49,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:38:50,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-20 11:38:50,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-20 11:38:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1707547128, now seen corresponding path program 2 times [2022-11-20 11:38:50,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:50,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224382717] [2022-11-20 11:38:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:38:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:50,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224382717] [2022-11-20 11:38:50,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224382717] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:38:50,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251889369] [2022-11-20 11:38:50,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:38:50,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:38:50,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:50,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:38:50,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0762447-8ca3-42f4-8aed-6d7eec6ea366/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:38:50,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:38:50,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:38:50,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:38:50,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:38:50,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 11:38:50,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 11:38:50,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:38:50,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 11:38:50,563 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:38:50,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 11:38:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 11:38:50,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:38:50,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251889369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:50,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:38:50,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-20 11:38:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880536302] [2022-11-20 11:38:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:50,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:38:50,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:50,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:38:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:38:50,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 484 [2022-11-20 11:38:50,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 438 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 289.6666666666667) internal successors, (1738), 6 states have internal predecessors, (1738), 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) [2022-11-20 11:38:50,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:38:50,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 484 [2022-11-20 11:38:50,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand