./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro --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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:34:28,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:34:28,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:34:28,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:34:28,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:34:28,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:34:28,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:34:28,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:34:28,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:34:28,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:34:28,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:34:28,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:34:28,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:34:28,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:34:28,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:34:28,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:34:28,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:34:28,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:34:28,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:34:28,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:34:28,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:34:28,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:34:28,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:34:28,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:34:28,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:34:28,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:34:28,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:34:28,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:34:28,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:34:28,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:34:28,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:34:28,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:34:28,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:34:28,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:34:28,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:34:28,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:34:28,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:34:28,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:34:28,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:34:28,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:34:28,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:34:28,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 19:34:28,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:34:28,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:34:28,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:34:28,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:34:28,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:34:28,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:34:28,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:34:28,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:34:28,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:34:28,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:34:28,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:34:28,299 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:34:28,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:34:28,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:34:28,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:34:28,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:34:28,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:34:28,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:34:28,301 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 19:34:28,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:34:28,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:34:28,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:34:28,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:34:28,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:34:28,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:34:28,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:34:28,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:28,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:34:28,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:34:28,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:34:28,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:34:28,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:34:28,307 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:34:28,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:34:28,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:34:28,308 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_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2022-11-18 19:34:28,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:34:28,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:34:28,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:34:28,702 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:34:28,703 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:34:28,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-11-18 19:34:28,785 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/data/65d233890/c0a38bde666842518d05a4449f16f0c6/FLAG2907aeb44 [2022-11-18 19:34:29,583 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:34:29,583 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2022-11-18 19:34:29,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/data/65d233890/c0a38bde666842518d05a4449f16f0c6/FLAG2907aeb44 [2022-11-18 19:34:29,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/data/65d233890/c0a38bde666842518d05a4449f16f0c6 [2022-11-18 19:34:29,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:34:29,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:34:29,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:29,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:34:29,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:34:29,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:29" (1/1) ... [2022-11-18 19:34:29,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196404e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:29, skipping insertion in model container [2022-11-18 19:34:29,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:34:29" (1/1) ... [2022-11-18 19:34:29,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:34:29,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:34:30,565 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-11-18 19:34:30,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:30,650 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:34:30,702 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2022-11-18 19:34:30,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:34:30,789 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:34:30,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30 WrapperNode [2022-11-18 19:34:30,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:34:30,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:30,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:34:30,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:34:30,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,894 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2022-11-18 19:34:30,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:34:30,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:34:30,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:34:30,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:34:30,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:34:30,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:34:30,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:34:30,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:34:30,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (1/1) ... [2022-11-18 19:34:30,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:34:31,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:31,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:34:31,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:34:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:34:31,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:34:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:34:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:34:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:34:31,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:34:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:34:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:34:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:34:31,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:34:31,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:34:31,095 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:34:31,241 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:34:31,243 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:34:31,866 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:34:31,880 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:34:31,880 INFO L300 CfgBuilder]: Removed 23 assume(true) statements. [2022-11-18 19:34:31,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:31 BoogieIcfgContainer [2022-11-18 19:34:31,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:34:31,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:34:31,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:34:31,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:34:31,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:34:29" (1/3) ... [2022-11-18 19:34:31,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e57d554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:31, skipping insertion in model container [2022-11-18 19:34:31,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:34:30" (2/3) ... [2022-11-18 19:34:31,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e57d554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:34:31, skipping insertion in model container [2022-11-18 19:34:31,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:34:31" (3/3) ... [2022-11-18 19:34:31,895 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2022-11-18 19:34:31,909 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:34:31,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:34:31,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-18 19:34:31,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:34:32,024 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:34:32,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 272 transitions, 552 flow [2022-11-18 19:34:32,287 INFO L130 PetriNetUnfolder]: 45/383 cut-off events. [2022-11-18 19:34:32,287 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-18 19:34:32,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 383 events. 45/383 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1544 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 222. Up to 8 conditions per place. [2022-11-18 19:34:32,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 272 transitions, 552 flow [2022-11-18 19:34:32,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 272 transitions, 552 flow [2022-11-18 19:34:32,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:34:32,339 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;@e6b453f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:34:32,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 19:34:32,381 INFO L130 PetriNetUnfolder]: 11/118 cut-off events. [2022-11-18 19:34:32,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:34:32,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:32,382 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] [2022-11-18 19:34:32,383 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)] === [2022-11-18 19:34:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:32,392 INFO L85 PathProgramCache]: Analyzing trace with hash -472500586, now seen corresponding path program 1 times [2022-11-18 19:34:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:32,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442587113] [2022-11-18 19:34:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:32,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:32,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:32,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442587113] [2022-11-18 19:34:32,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442587113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:32,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:32,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:34:32,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160127954] [2022-11-18 19:34:32,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:32,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:34:32,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:32,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:34:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:34:32,784 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 272 [2022-11-18 19:34:32,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 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) [2022-11-18 19:34:32,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:32,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 272 [2022-11-18 19:34:32,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:32,907 INFO L130 PetriNetUnfolder]: 5/340 cut-off events. [2022-11-18 19:34:32,907 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 19:34:32,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 340 events. 5/340 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1126 event pairs, 0 based on Foata normal form. 40/350 useless extension candidates. Maximal degree in co-relation 197. Up to 4 conditions per place. [2022-11-18 19:34:32,916 INFO L137 encePairwiseOnDemand]: 245/272 looper letters, 2 selfloop transitions, 0 changer transitions 1/243 dead transitions. [2022-11-18 19:34:32,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 243 transitions, 498 flow [2022-11-18 19:34:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:34:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:34:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 511 transitions. [2022-11-18 19:34:32,939 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393382352941176 [2022-11-18 19:34:32,940 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 511 transitions. [2022-11-18 19:34:32,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 511 transitions. [2022-11-18 19:34:32,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:32,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 511 transitions. [2022-11-18 19:34:32,952 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) [2022-11-18 19:34:32,960 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) [2022-11-18 19:34:32,961 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) [2022-11-18 19:34:32,963 INFO L175 Difference]: Start difference. First operand has 244 places, 272 transitions, 552 flow. Second operand 2 states and 511 transitions. [2022-11-18 19:34:32,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 243 transitions, 498 flow [2022-11-18 19:34:32,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 243 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:34:32,975 INFO L231 Difference]: Finished difference. Result has 243 places, 242 transitions, 492 flow [2022-11-18 19:34:32,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=242, 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=492, PETRI_PLACES=243, PETRI_TRANSITIONS=242} [2022-11-18 19:34:32,981 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, -1 predicate places. [2022-11-18 19:34:32,981 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 242 transitions, 492 flow [2022-11-18 19:34:32,982 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) [2022-11-18 19:34:32,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:32,984 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] [2022-11-18 19:34:32,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:34:32,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 19:34:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:32,987 INFO L85 PathProgramCache]: Analyzing trace with hash 421911486, now seen corresponding path program 1 times [2022-11-18 19:34:32,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:32,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208741589] [2022-11-18 19:34:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:32,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:33,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:33,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208741589] [2022-11-18 19:34:33,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208741589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:33,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:33,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:33,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583638534] [2022-11-18 19:34:33,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:33,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:33,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-18 19:34:33,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 242 transitions, 492 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) [2022-11-18 19:34:33,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:33,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-18 19:34:33,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:33,344 INFO L130 PetriNetUnfolder]: 5/343 cut-off events. [2022-11-18 19:34:33,344 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-18 19:34:33,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 343 events. 5/343 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1123 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 360. Up to 10 conditions per place. [2022-11-18 19:34:33,347 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 11 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2022-11-18 19:34:33,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 246 transitions, 526 flow [2022-11-18 19:34:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:34:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2022-11-18 19:34:33,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8774509803921569 [2022-11-18 19:34:33,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2022-11-18 19:34:33,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2022-11-18 19:34:33,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:33,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2022-11-18 19:34:33,354 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) [2022-11-18 19:34:33,358 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) [2022-11-18 19:34:33,359 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) [2022-11-18 19:34:33,359 INFO L175 Difference]: Start difference. First operand has 243 places, 242 transitions, 492 flow. Second operand 3 states and 716 transitions. [2022-11-18 19:34:33,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 246 transitions, 526 flow [2022-11-18 19:34:33,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 246 transitions, 526 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:34:33,371 INFO L231 Difference]: Finished difference. Result has 245 places, 243 transitions, 504 flow [2022-11-18 19:34:33,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=245, PETRI_TRANSITIONS=243} [2022-11-18 19:34:33,372 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 1 predicate places. [2022-11-18 19:34:33,372 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 243 transitions, 504 flow [2022-11-18 19:34:33,373 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) [2022-11-18 19:34:33,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:33,374 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] [2022-11-18 19:34:33,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:34:33,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-11-18 19:34:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash 806415212, now seen corresponding path program 1 times [2022-11-18 19:34:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058696321] [2022-11-18 19:34:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:33,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:33,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:33,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058696321] [2022-11-18 19:34:33,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058696321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:33,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391563661] [2022-11-18 19:34:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:33,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:33,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:33,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:33,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:34:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:33,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:34:33,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:33,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:33,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391563661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:33,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:33,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 19:34:33,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524749493] [2022-11-18 19:34:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:33,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:33,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:33,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 272 [2022-11-18 19:34:33,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 243 transitions, 504 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) [2022-11-18 19:34:33,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:33,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 272 [2022-11-18 19:34:33,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:33,827 INFO L130 PetriNetUnfolder]: 3/265 cut-off events. [2022-11-18 19:34:33,827 INFO L131 PetriNetUnfolder]: For 4/10 co-relation queries the response was YES. [2022-11-18 19:34:33,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 265 events. 3/265 cut-off events. For 4/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 563 event pairs, 0 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 285. Up to 7 conditions per place. [2022-11-18 19:34:33,830 INFO L137 encePairwiseOnDemand]: 269/272 looper letters, 9 selfloop transitions, 2 changer transitions 0/245 dead transitions. [2022-11-18 19:34:33,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 245 transitions, 530 flow [2022-11-18 19:34:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:34:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2022-11-18 19:34:33,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-18 19:34:33,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2022-11-18 19:34:33,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2022-11-18 19:34:33,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:33,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2022-11-18 19:34:33,837 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) [2022-11-18 19:34:33,839 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) [2022-11-18 19:34:33,840 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) [2022-11-18 19:34:33,840 INFO L175 Difference]: Start difference. First operand has 245 places, 243 transitions, 504 flow. Second operand 3 states and 714 transitions. [2022-11-18 19:34:33,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 245 transitions, 530 flow [2022-11-18 19:34:33,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 245 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:34:33,847 INFO L231 Difference]: Finished difference. Result has 247 places, 243 transitions, 510 flow [2022-11-18 19:34:33,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=247, PETRI_TRANSITIONS=243} [2022-11-18 19:34:33,849 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 3 predicate places. [2022-11-18 19:34:33,849 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 243 transitions, 510 flow [2022-11-18 19:34:33,850 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) [2022-11-18 19:34:33,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:33,850 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:33,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 19:34:34,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:34,056 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)] === [2022-11-18 19:34:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:34,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1952452948, now seen corresponding path program 1 times [2022-11-18 19:34:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:34,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83670555] [2022-11-18 19:34:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:34,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:34,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83670555] [2022-11-18 19:34:34,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83670555] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:34,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044785340] [2022-11-18 19:34:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:34,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:34,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:34,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:34,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:34:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:34,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:34:34,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:34,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:34,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044785340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:34,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:34,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 19:34:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334072127] [2022-11-18 19:34:34,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:34,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:34:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:34:34,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:34,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-18 19:34:34,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 243 transitions, 510 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) [2022-11-18 19:34:34,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:34,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-18 19:34:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:34,655 INFO L130 PetriNetUnfolder]: 3/272 cut-off events. [2022-11-18 19:34:34,656 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 19:34:34,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 272 events. 3/272 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 558 event pairs, 0 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 306. Up to 7 conditions per place. [2022-11-18 19:34:34,659 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 12 selfloop transitions, 9 changer transitions 0/253 dead transitions. [2022-11-18 19:34:34,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 253 transitions, 574 flow [2022-11-18 19:34:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:34,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:34:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2120 transitions. [2022-11-18 19:34:34,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8660130718954249 [2022-11-18 19:34:34,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2120 transitions. [2022-11-18 19:34:34,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2120 transitions. [2022-11-18 19:34:34,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:34,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2120 transitions. [2022-11-18 19:34:34,671 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) [2022-11-18 19:34:34,676 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) [2022-11-18 19:34:34,678 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) [2022-11-18 19:34:34,678 INFO L175 Difference]: Start difference. First operand has 247 places, 243 transitions, 510 flow. Second operand 9 states and 2120 transitions. [2022-11-18 19:34:34,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 253 transitions, 574 flow [2022-11-18 19:34:34,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 253 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:34:34,705 INFO L231 Difference]: Finished difference. Result has 256 places, 249 transitions, 556 flow [2022-11-18 19:34:34,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=256, PETRI_TRANSITIONS=249} [2022-11-18 19:34:34,706 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 12 predicate places. [2022-11-18 19:34:34,707 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 249 transitions, 556 flow [2022-11-18 19:34:34,708 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) [2022-11-18 19:34:34,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:34,709 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:34,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:34,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:34,915 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)] === [2022-11-18 19:34:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1813775508, now seen corresponding path program 2 times [2022-11-18 19:34:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:34,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009791616] [2022-11-18 19:34:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:35,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:35,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009791616] [2022-11-18 19:34:35,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009791616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:35,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742218513] [2022-11-18 19:34:35,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:35,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:35,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:35,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:35,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:34:35,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:34:35,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:35,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:34:35,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:35,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:35,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742218513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:35,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:35,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-18 19:34:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153403208] [2022-11-18 19:34:35,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:35,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:34:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:34:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:34:35,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-18 19:34:35,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 249 transitions, 556 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) [2022-11-18 19:34:35,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:35,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-18 19:34:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:35,794 INFO L130 PetriNetUnfolder]: 3/292 cut-off events. [2022-11-18 19:34:35,795 INFO L131 PetriNetUnfolder]: For 26/27 co-relation queries the response was YES. [2022-11-18 19:34:35,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 292 events. 3/292 cut-off events. For 26/27 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 559 event pairs, 0 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 392. Up to 11 conditions per place. [2022-11-18 19:34:35,797 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 20 selfloop transitions, 21 changer transitions 0/273 dead transitions. [2022-11-18 19:34:35,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 273 transitions, 746 flow [2022-11-18 19:34:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:34:35,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:34:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4938 transitions. [2022-11-18 19:34:35,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8644957983193278 [2022-11-18 19:34:35,808 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4938 transitions. [2022-11-18 19:34:35,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4938 transitions. [2022-11-18 19:34:35,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:35,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4938 transitions. [2022-11-18 19:34:35,821 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) [2022-11-18 19:34:35,831 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) [2022-11-18 19:34:35,834 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) [2022-11-18 19:34:35,834 INFO L175 Difference]: Start difference. First operand has 256 places, 249 transitions, 556 flow. Second operand 21 states and 4938 transitions. [2022-11-18 19:34:35,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 273 transitions, 746 flow [2022-11-18 19:34:35,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 273 transitions, 732 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-18 19:34:35,841 INFO L231 Difference]: Finished difference. Result has 280 places, 262 transitions, 680 flow [2022-11-18 19:34:35,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=680, PETRI_PLACES=280, PETRI_TRANSITIONS=262} [2022-11-18 19:34:35,843 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 36 predicate places. [2022-11-18 19:34:35,843 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 262 transitions, 680 flow [2022-11-18 19:34:35,845 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) [2022-11-18 19:34:35,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:35,845 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:35,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:36,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:36,051 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)] === [2022-11-18 19:34:36,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:36,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1468876012, now seen corresponding path program 3 times [2022-11-18 19:34:36,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:36,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762461776] [2022-11-18 19:34:36,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:36,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762461776] [2022-11-18 19:34:36,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762461776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:36,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012734798] [2022-11-18 19:34:36,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:34:36,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:36,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:36,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:36,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:34:36,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 19:34:36,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:36,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:34:36,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:36,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:34:36,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012734798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:36,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:36,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-18 19:34:36,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495400712] [2022-11-18 19:34:36,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:36,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:34:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:34:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:34:36,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 272 [2022-11-18 19:34:36,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 262 transitions, 680 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) [2022-11-18 19:34:36,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:36,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 272 [2022-11-18 19:34:36,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:37,397 INFO L130 PetriNetUnfolder]: 3/307 cut-off events. [2022-11-18 19:34:37,397 INFO L131 PetriNetUnfolder]: For 114/115 co-relation queries the response was YES. [2022-11-18 19:34:37,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 307 events. 3/307 cut-off events. For 114/115 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 561 event pairs, 0 based on Foata normal form. 3/291 useless extension candidates. Maximal degree in co-relation 488. Up to 17 conditions per place. [2022-11-18 19:34:37,401 INFO L137 encePairwiseOnDemand]: 266/272 looper letters, 26 selfloop transitions, 30 changer transitions 0/288 dead transitions. [2022-11-18 19:34:37,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 288 transitions, 938 flow [2022-11-18 19:34:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:34:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 19:34:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7049 transitions. [2022-11-18 19:34:37,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8638480392156863 [2022-11-18 19:34:37,438 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7049 transitions. [2022-11-18 19:34:37,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7049 transitions. [2022-11-18 19:34:37,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:37,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7049 transitions. [2022-11-18 19:34:37,458 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) [2022-11-18 19:34:37,486 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) [2022-11-18 19:34:37,492 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) [2022-11-18 19:34:37,493 INFO L175 Difference]: Start difference. First operand has 280 places, 262 transitions, 680 flow. Second operand 30 states and 7049 transitions. [2022-11-18 19:34:37,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 288 transitions, 938 flow [2022-11-18 19:34:37,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 288 transitions, 908 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-18 19:34:37,503 INFO L231 Difference]: Finished difference. Result has 307 places, 272 transitions, 808 flow [2022-11-18 19:34:37,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=808, PETRI_PLACES=307, PETRI_TRANSITIONS=272} [2022-11-18 19:34:37,506 INFO L288 CegarLoopForPetriNet]: 244 programPoint places, 63 predicate places. [2022-11-18 19:34:37,507 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 272 transitions, 808 flow [2022-11-18 19:34:37,508 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) [2022-11-18 19:34:37,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:37,509 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:37,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:37,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:37,715 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)] === [2022-11-18 19:34:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash -575057702, now seen corresponding path program 4 times [2022-11-18 19:34:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:37,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024664207] [2022-11-18 19:34:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:37,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:34:37,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:34:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:34:37,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:34:37,817 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:34:37,818 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 19:34:37,819 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-11-18 19:34:37,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-11-18 19:34:37,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-11-18 19:34:37,820 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-11-18 19:34:37,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-11-18 19:34:37,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-11-18 19:34:37,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-11-18 19:34:37,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-11-18 19:34:37,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-11-18 19:34:37,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-11-18 19:34:37,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-11-18 19:34:37,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-11-18 19:34:37,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-11-18 19:34:37,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-11-18 19:34:37,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-11-18 19:34:37,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-11-18 19:34:37,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:34:37,826 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-18 19:34:37,829 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:34:37,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:34:37,876 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:34:37,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 778 flow [2022-11-18 19:34:38,018 INFO L130 PetriNetUnfolder]: 75/633 cut-off events. [2022-11-18 19:34:38,018 INFO L131 PetriNetUnfolder]: For 6/9 co-relation queries the response was YES. [2022-11-18 19:34:38,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 633 events. 75/633 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3145 event pairs, 0 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2022-11-18 19:34:38,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 380 transitions, 778 flow [2022-11-18 19:34:38,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 380 transitions, 778 flow [2022-11-18 19:34:38,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:34:38,035 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;@e6b453f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:34:38,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-18 19:34:38,047 INFO L130 PetriNetUnfolder]: 11/118 cut-off events. [2022-11-18 19:34:38,048 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:34:38,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:38,048 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] [2022-11-18 19:34:38,048 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)] === [2022-11-18 19:34:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:38,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2002441578, now seen corresponding path program 1 times [2022-11-18 19:34:38,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:38,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773030296] [2022-11-18 19:34:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:38,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773030296] [2022-11-18 19:34:38,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773030296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:38,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:38,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:34:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125924319] [2022-11-18 19:34:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:38,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:34:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:34:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:34:38,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 380 [2022-11-18 19:34:38,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 380 transitions, 778 flow. Second operand has 2 states, 2 states have (on average 335.5) internal successors, (671), 2 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:38,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 380 [2022-11-18 19:34:38,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:38,213 INFO L130 PetriNetUnfolder]: 9/562 cut-off events. [2022-11-18 19:34:38,214 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-18 19:34:38,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 562 events. 9/562 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2559 event pairs, 0 based on Foata normal form. 91/603 useless extension candidates. Maximal degree in co-relation 344. Up to 7 conditions per place. [2022-11-18 19:34:38,222 INFO L137 encePairwiseOnDemand]: 341/380 looper letters, 4 selfloop transitions, 0 changer transitions 1/338 dead transitions. [2022-11-18 19:34:38,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 338 transitions, 702 flow [2022-11-18 19:34:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:34:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:34:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 711 transitions. [2022-11-18 19:34:38,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9355263157894737 [2022-11-18 19:34:38,225 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 711 transitions. [2022-11-18 19:34:38,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 711 transitions. [2022-11-18 19:34:38,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:38,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 711 transitions. [2022-11-18 19:34:38,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 355.5) internal successors, (711), 2 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,229 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,230 INFO L175 Difference]: Start difference. First operand has 340 places, 380 transitions, 778 flow. Second operand 2 states and 711 transitions. [2022-11-18 19:34:38,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 338 transitions, 702 flow [2022-11-18 19:34:38,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 338 transitions, 702 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:34:38,236 INFO L231 Difference]: Finished difference. Result has 338 places, 337 transitions, 692 flow [2022-11-18 19:34:38,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=692, PETRI_PLACES=338, PETRI_TRANSITIONS=337} [2022-11-18 19:34:38,238 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, -2 predicate places. [2022-11-18 19:34:38,238 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 337 transitions, 692 flow [2022-11-18 19:34:38,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 335.5) internal successors, (671), 2 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:38,239 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] [2022-11-18 19:34:38,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:34:38,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 19:34:38,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash 238381370, now seen corresponding path program 1 times [2022-11-18 19:34:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:38,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388032260] [2022-11-18 19:34:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:38,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388032260] [2022-11-18 19:34:38,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388032260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:38,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:38,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:34:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510746289] [2022-11-18 19:34:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:38,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:38,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:38,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:34:38,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 380 [2022-11-18 19:34:38,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 337 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:38,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 380 [2022-11-18 19:34:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:38,441 INFO L130 PetriNetUnfolder]: 9/565 cut-off events. [2022-11-18 19:34:38,442 INFO L131 PetriNetUnfolder]: For 21/27 co-relation queries the response was YES. [2022-11-18 19:34:38,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 565 events. 9/565 cut-off events. For 21/27 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2552 event pairs, 0 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 593. Up to 14 conditions per place. [2022-11-18 19:34:38,449 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 13 selfloop transitions, 2 changer transitions 0/341 dead transitions. [2022-11-18 19:34:38,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 341 transitions, 730 flow [2022-11-18 19:34:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:38,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:34:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2022-11-18 19:34:38,452 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.874561403508772 [2022-11-18 19:34:38,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2022-11-18 19:34:38,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2022-11-18 19:34:38,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:38,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2022-11-18 19:34:38,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,459 INFO L175 Difference]: Start difference. First operand has 338 places, 337 transitions, 692 flow. Second operand 3 states and 997 transitions. [2022-11-18 19:34:38,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 341 transitions, 730 flow [2022-11-18 19:34:38,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 730 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:34:38,465 INFO L231 Difference]: Finished difference. Result has 340 places, 338 transitions, 704 flow [2022-11-18 19:34:38,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=337, 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=704, PETRI_PLACES=340, PETRI_TRANSITIONS=338} [2022-11-18 19:34:38,467 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, 0 predicate places. [2022-11-18 19:34:38,467 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 338 transitions, 704 flow [2022-11-18 19:34:38,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:38,468 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] [2022-11-18 19:34:38,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:34:38,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 19:34:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1863856660, now seen corresponding path program 1 times [2022-11-18 19:34:38,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:38,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686030513] [2022-11-18 19:34:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:38,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:38,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:38,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686030513] [2022-11-18 19:34:38,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686030513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:38,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429089098] [2022-11-18 19:34:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:38,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:38,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:38,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:38,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:34:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:38,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:34:38,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:38,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:38,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429089098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:38,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:38,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 19:34:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142197035] [2022-11-18 19:34:38,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:38,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:34:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:38,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:34:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:38,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 380 [2022-11-18 19:34:38,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 338 transitions, 704 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:38,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 380 [2022-11-18 19:34:38,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:38,832 INFO L130 PetriNetUnfolder]: 7/487 cut-off events. [2022-11-18 19:34:38,832 INFO L131 PetriNetUnfolder]: For 33/79 co-relation queries the response was YES. [2022-11-18 19:34:38,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 487 events. 7/487 cut-off events. For 33/79 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1938 event pairs, 0 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 523. Up to 16 conditions per place. [2022-11-18 19:34:38,839 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 13 selfloop transitions, 2 changer transitions 0/342 dead transitions. [2022-11-18 19:34:38,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 342 transitions, 742 flow [2022-11-18 19:34:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:34:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:34:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2022-11-18 19:34:38,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.874561403508772 [2022-11-18 19:34:38,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2022-11-18 19:34:38,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2022-11-18 19:34:38,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:38,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2022-11-18 19:34:38,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,848 INFO L175 Difference]: Start difference. First operand has 340 places, 338 transitions, 704 flow. Second operand 3 states and 997 transitions. [2022-11-18 19:34:38,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 342 transitions, 742 flow [2022-11-18 19:34:38,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 342 transitions, 740 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:34:38,855 INFO L231 Difference]: Finished difference. Result has 342 places, 339 transitions, 714 flow [2022-11-18 19:34:38,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=339, 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=714, PETRI_PLACES=342, PETRI_TRANSITIONS=339} [2022-11-18 19:34:38,857 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, 2 predicate places. [2022-11-18 19:34:38,857 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 339 transitions, 714 flow [2022-11-18 19:34:38,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:38,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:38,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:38,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:39,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:39,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 19:34:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash 15139270, now seen corresponding path program 1 times [2022-11-18 19:34:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:39,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44565948] [2022-11-18 19:34:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:39,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:39,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44565948] [2022-11-18 19:34:39,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44565948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:39,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493029270] [2022-11-18 19:34:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:39,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:39,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:39,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:39,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:34:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:34:39,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:39,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:34:39,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493029270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:39,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:39,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-18 19:34:39,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440259633] [2022-11-18 19:34:39,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:39,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:34:39,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:34:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:34:39,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 380 [2022-11-18 19:34:39,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 339 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 328.1) internal successors, (3281), 10 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:39,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 380 [2022-11-18 19:34:39,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:39,520 INFO L130 PetriNetUnfolder]: 7/494 cut-off events. [2022-11-18 19:34:39,520 INFO L131 PetriNetUnfolder]: For 22/28 co-relation queries the response was YES. [2022-11-18 19:34:39,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 494 events. 7/494 cut-off events. For 22/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1936 event pairs, 0 based on Foata normal form. 2/458 useless extension candidates. Maximal degree in co-relation 541. Up to 11 conditions per place. [2022-11-18 19:34:39,528 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 14 selfloop transitions, 9 changer transitions 0/349 dead transitions. [2022-11-18 19:34:39,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 349 transitions, 782 flow [2022-11-18 19:34:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:34:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:34:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2959 transitions. [2022-11-18 19:34:39,534 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8652046783625731 [2022-11-18 19:34:39,534 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2959 transitions. [2022-11-18 19:34:39,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2959 transitions. [2022-11-18 19:34:39,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:39,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2959 transitions. [2022-11-18 19:34:39,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 328.77777777777777) internal successors, (2959), 9 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,584 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 380.0) internal successors, (3800), 10 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,584 INFO L175 Difference]: Start difference. First operand has 342 places, 339 transitions, 714 flow. Second operand 9 states and 2959 transitions. [2022-11-18 19:34:39,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 349 transitions, 782 flow [2022-11-18 19:34:39,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 349 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:34:39,590 INFO L231 Difference]: Finished difference. Result has 352 places, 345 transitions, 762 flow [2022-11-18 19:34:39,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=341, 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=762, PETRI_PLACES=352, PETRI_TRANSITIONS=345} [2022-11-18 19:34:39,593 INFO L288 CegarLoopForPetriNet]: 340 programPoint places, 12 predicate places. [2022-11-18 19:34:39,593 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 345 transitions, 762 flow [2022-11-18 19:34:39,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 328.1) internal successors, (3281), 10 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:39,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:39,594 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, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:39,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 19:34:39,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:39,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-11-18 19:34:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash 234846854, now seen corresponding path program 2 times [2022-11-18 19:34:39,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:39,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929734906] [2022-11-18 19:34:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:39,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 19:34:39,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:39,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929734906] [2022-11-18 19:34:39,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929734906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:39,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500292604] [2022-11-18 19:34:39,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:39,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:39,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:39,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:39,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe7ae208-36ec-49bf-8764-26d8c471394f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:34:40,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:34:40,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:40,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:34:40,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:40,056 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 15 treesize of output 11 [2022-11-18 19:34:40,072 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 28 treesize of output 27 [2022-11-18 19:34:40,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:34:40,101 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 40 treesize of output 42 [2022-11-18 19:34:40,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:34:40,143 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 52 treesize of output 57 [2022-11-18 19:34:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 19:34:40,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:40,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500292604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:40,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:40,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-18 19:34:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244755408] [2022-11-18 19:34:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:40,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:40,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:40,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:40,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:40,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 380 [2022-11-18 19:34:40,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 345 transitions, 762 flow. Second operand has 6 states, 6 states have (on average 225.33333333333334) internal successors, (1352), 6 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:40,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:40,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 380 [2022-11-18 19:34:40,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand