./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:49:55,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:49:55,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:49:55,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:49:55,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:49:55,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:49:55,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:49:55,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:49:55,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:49:55,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:49:55,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:49:55,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:49:55,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:49:55,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:49:55,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:49:55,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:49:55,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:49:55,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:49:55,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:49:55,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:49:55,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:49:55,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:49:55,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:49:55,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:49:55,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:49:55,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:49:55,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:49:55,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:49:55,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:49:55,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:49:55,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:49:55,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:49:55,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:49:55,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:49:55,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:49:55,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:49:55,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:49:55,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:49:55,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:49:55,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:49:55,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:49:55,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:49:55,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:49:55,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:49:55,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:49:55,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:49:55,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:49:55,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:49:55,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:49:55,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:49:55,221 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:49:55,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:49:55,221 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:49:55,221 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:49:55,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:49:55,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:49:55,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:49:55,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:49:55,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:49:55,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:49:55,223 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:49:55,223 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:49:55,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:49:55,223 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:49:55,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:49:55,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:49:55,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:49:55,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:49:55,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:49:55,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:49:55,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:49:55,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:49:55,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:49:55,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:49:55,226 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:49:55,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:49:55,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:49:55,226 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_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-20 12:49:55,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:49:55,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:49:55,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:49:55,567 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:49:55,567 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:49:55,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-20 12:49:58,739 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:49:59,016 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:49:59,016 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-20 12:49:59,047 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/data/3dcfa1e58/df06d5b69c2344a1bc23337c0a9fb4b4/FLAG470742b14 [2022-11-20 12:49:59,068 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/data/3dcfa1e58/df06d5b69c2344a1bc23337c0a9fb4b4 [2022-11-20 12:49:59,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:49:59,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:49:59,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:49:59,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:49:59,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:49:59,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:49:59,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fcc3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59, skipping insertion in model container [2022-11-20 12:49:59,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:49:59,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:49:59,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:49:59,668 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-20 12:49:59,721 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,723 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,726 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,728 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:49:59,796 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:49:59,827 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-20 12:49:59,832 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,833 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,834 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,835 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 12:49:59,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:49:59,911 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:49:59,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59 WrapperNode [2022-11-20 12:49:59,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:49:59,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:49:59,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:49:59,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:49:59,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:49:59,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,013 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 355 [2022-11-20 12:50:00,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:50:00,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:50:00,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:50:00,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:50:00,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:50:00,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:50:00,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:50:00,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:50:00,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (1/1) ... [2022-11-20 12:50:00,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:50:00,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:00,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:50:00,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:50:00,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:50:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:50:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:50:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:50:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:50:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 12:50:00,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:50:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:50:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:50:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 12:50:00,234 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 12:50:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:50:00,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:50:00,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:50:00,236 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:50:00,512 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:50:00,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:50:01,331 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:50:01,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:50:01,348 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 12:50:01,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:50:01 BoogieIcfgContainer [2022-11-20 12:50:01,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:50:01,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:50:01,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:50:01,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:50:01,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:49:59" (1/3) ... [2022-11-20 12:50:01,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:50:01, skipping insertion in model container [2022-11-20 12:50:01,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:49:59" (2/3) ... [2022-11-20 12:50:01,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:50:01, skipping insertion in model container [2022-11-20 12:50:01,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:50:01" (3/3) ... [2022-11-20 12:50:01,364 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-20 12:50:01,374 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:50:01,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:50:01,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-20 12:50:01,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:50:01,515 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 12:50:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 408 transitions, 824 flow [2022-11-20 12:50:01,799 INFO L130 PetriNetUnfolder]: 28/431 cut-off events. [2022-11-20 12:50:01,799 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-20 12:50:01,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 431 events. 28/431 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 920 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 262. Up to 4 conditions per place. [2022-11-20 12:50:01,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 408 transitions, 824 flow [2022-11-20 12:50:01,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 408 transitions, 824 flow [2022-11-20 12:50:01,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:50:01,849 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;@32ef64e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:50:01,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-11-20 12:50:01,862 INFO L130 PetriNetUnfolder]: 1/50 cut-off events. [2022-11-20 12:50:01,863 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:50:01,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:01,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:01,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:01,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2121220419, now seen corresponding path program 1 times [2022-11-20 12:50:01,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:01,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725753848] [2022-11-20 12:50:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:01,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:02,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:02,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725753848] [2022-11-20 12:50:02,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725753848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:02,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:02,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103595803] [2022-11-20 12:50:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:02,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 408 [2022-11-20 12:50:02,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 408 transitions, 824 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:02,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:02,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 408 [2022-11-20 12:50:02,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:03,422 INFO L130 PetriNetUnfolder]: 277/1295 cut-off events. [2022-11-20 12:50:03,422 INFO L131 PetriNetUnfolder]: For 7/14 co-relation queries the response was YES. [2022-11-20 12:50:03,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 1295 events. 277/1295 cut-off events. For 7/14 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6583 event pairs, 252 based on Foata normal form. 191/1338 useless extension candidates. Maximal degree in co-relation 1591. Up to 652 conditions per place. [2022-11-20 12:50:03,432 INFO L137 encePairwiseOnDemand]: 376/408 looper letters, 134 selfloop transitions, 10 changer transitions 2/385 dead transitions. [2022-11-20 12:50:03,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 385 transitions, 1066 flow [2022-11-20 12:50:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:03,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1612 transitions. [2022-11-20 12:50:03,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-11-20 12:50:03,461 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1612 transitions. [2022-11-20 12:50:03,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1612 transitions. [2022-11-20 12:50:03,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:03,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1612 transitions. [2022-11-20 12:50:03,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:03,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:03,486 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:03,488 INFO L175 Difference]: Start difference. First operand has 385 places, 408 transitions, 824 flow. Second operand 6 states and 1612 transitions. [2022-11-20 12:50:03,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 385 transitions, 1066 flow [2022-11-20 12:50:03,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 385 transitions, 1066 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:50:03,502 INFO L231 Difference]: Finished difference. Result has 387 places, 383 transitions, 794 flow [2022-11-20 12:50:03,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=387, PETRI_TRANSITIONS=383} [2022-11-20 12:50:03,508 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 2 predicate places. [2022-11-20 12:50:03,508 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 383 transitions, 794 flow [2022-11-20 12:50:03,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:03,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:03,509 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] [2022-11-20 12:50:03,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:50:03,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 706775937, now seen corresponding path program 1 times [2022-11-20 12:50:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:03,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036963886] [2022-11-20 12:50:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:03,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:03,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:03,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036963886] [2022-11-20 12:50:03,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036963886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:03,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:03,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:03,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275086600] [2022-11-20 12:50:03,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:03,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:03,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:03,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:03,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 408 [2022-11-20 12:50:03,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 383 transitions, 794 flow. Second operand has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:03,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:03,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 408 [2022-11-20 12:50:03,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:04,561 INFO L130 PetriNetUnfolder]: 277/1291 cut-off events. [2022-11-20 12:50:04,561 INFO L131 PetriNetUnfolder]: For 9/16 co-relation queries the response was YES. [2022-11-20 12:50:04,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 1291 events. 277/1291 cut-off events. For 9/16 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6542 event pairs, 252 based on Foata normal form. 0/1147 useless extension candidates. Maximal degree in co-relation 1772. Up to 650 conditions per place. [2022-11-20 12:50:04,568 INFO L137 encePairwiseOnDemand]: 396/408 looper letters, 132 selfloop transitions, 10 changer transitions 0/381 dead transitions. [2022-11-20 12:50:04,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 381 transitions, 1074 flow [2022-11-20 12:50:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1590 transitions. [2022-11-20 12:50:04,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6495098039215687 [2022-11-20 12:50:04,573 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1590 transitions. [2022-11-20 12:50:04,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1590 transitions. [2022-11-20 12:50:04,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:04,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1590 transitions. [2022-11-20 12:50:04,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,584 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,585 INFO L175 Difference]: Start difference. First operand has 387 places, 383 transitions, 794 flow. Second operand 6 states and 1590 transitions. [2022-11-20 12:50:04,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 381 transitions, 1074 flow [2022-11-20 12:50:04,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 381 transitions, 1054 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:04,593 INFO L231 Difference]: Finished difference. Result has 383 places, 381 transitions, 790 flow [2022-11-20 12:50:04,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=790, PETRI_PLACES=383, PETRI_TRANSITIONS=381} [2022-11-20 12:50:04,595 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, -2 predicate places. [2022-11-20 12:50:04,595 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 381 transitions, 790 flow [2022-11-20 12:50:04,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:04,597 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] [2022-11-20 12:50:04,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:50:04,597 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1578368604, now seen corresponding path program 1 times [2022-11-20 12:50:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:04,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820817197] [2022-11-20 12:50:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:04,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:04,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:04,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820817197] [2022-11-20 12:50:04,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820817197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:04,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:04,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:50:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000112509] [2022-11-20 12:50:04,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:04,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:50:04,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:50:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:50:04,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 408 [2022-11-20 12:50:04,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 381 transitions, 790 flow. Second operand has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:04,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 408 [2022-11-20 12:50:04,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:04,750 INFO L130 PetriNetUnfolder]: 7/526 cut-off events. [2022-11-20 12:50:04,750 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-20 12:50:04,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 526 events. 7/526 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1138 event pairs, 0 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 411. Up to 13 conditions per place. [2022-11-20 12:50:04,753 INFO L137 encePairwiseOnDemand]: 405/408 looper letters, 17 selfloop transitions, 2 changer transitions 0/388 dead transitions. [2022-11-20 12:50:04,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 388 transitions, 842 flow [2022-11-20 12:50:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:50:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:50:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1145 transitions. [2022-11-20 12:50:04,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9354575163398693 [2022-11-20 12:50:04,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1145 transitions. [2022-11-20 12:50:04,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1145 transitions. [2022-11-20 12:50:04,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:04,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1145 transitions. [2022-11-20 12:50:04,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 381.6666666666667) internal successors, (1145), 3 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,764 INFO L175 Difference]: Start difference. First operand has 383 places, 381 transitions, 790 flow. Second operand 3 states and 1145 transitions. [2022-11-20 12:50:04,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 388 transitions, 842 flow [2022-11-20 12:50:04,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 388 transitions, 822 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:04,772 INFO L231 Difference]: Finished difference. Result has 381 places, 382 transitions, 782 flow [2022-11-20 12:50:04,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=782, PETRI_PLACES=381, PETRI_TRANSITIONS=382} [2022-11-20 12:50:04,774 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, -4 predicate places. [2022-11-20 12:50:04,774 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 382 transitions, 782 flow [2022-11-20 12:50:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:04,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:04,775 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:04,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:50:04,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:04,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:04,776 INFO L85 PathProgramCache]: Analyzing trace with hash 113375373, now seen corresponding path program 1 times [2022-11-20 12:50:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:04,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797154918] [2022-11-20 12:50:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:04,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:04,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:04,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857021707] [2022-11-20 12:50:04,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:04,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:04,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:04,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:04,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:50:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:04,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 12:50:04,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:05,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:50:05,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:05,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:50:05,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:05,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:05,188 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:05,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:50:05,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:05,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:05,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:05,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:05,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:50:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:05,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:05,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:05,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797154918] [2022-11-20 12:50:05,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:05,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857021707] [2022-11-20 12:50:05,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857021707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:05,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:05,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:50:05,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755356604] [2022-11-20 12:50:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:05,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:50:05,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:50:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:50:05,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 408 [2022-11-20 12:50:05,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 382 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 246.625) internal successors, (1973), 8 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:05,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:05,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 408 [2022-11-20 12:50:05,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:06,519 INFO L130 PetriNetUnfolder]: 555/2594 cut-off events. [2022-11-20 12:50:06,519 INFO L131 PetriNetUnfolder]: For 15/29 co-relation queries the response was YES. [2022-11-20 12:50:06,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 2594 events. 555/2594 cut-off events. For 15/29 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 13994 event pairs, 504 based on Foata normal form. 0/2308 useless extension candidates. Maximal degree in co-relation 1936. Up to 693 conditions per place. [2022-11-20 12:50:06,532 INFO L137 encePairwiseOnDemand]: 398/408 looper letters, 214 selfloop transitions, 9 changer transitions 0/466 dead transitions. [2022-11-20 12:50:06,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 466 transitions, 1402 flow [2022-11-20 12:50:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:50:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:50:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2420 transitions. [2022-11-20 12:50:06,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-11-20 12:50:06,538 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2420 transitions. [2022-11-20 12:50:06,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2420 transitions. [2022-11-20 12:50:06,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:06,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2420 transitions. [2022-11-20 12:50:06,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 268.8888888888889) internal successors, (2420), 9 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:06,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:06,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:06,554 INFO L175 Difference]: Start difference. First operand has 381 places, 382 transitions, 782 flow. Second operand 9 states and 2420 transitions. [2022-11-20 12:50:06,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 466 transitions, 1402 flow [2022-11-20 12:50:06,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 466 transitions, 1400 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:50:06,563 INFO L231 Difference]: Finished difference. Result has 388 places, 382 transitions, 804 flow [2022-11-20 12:50:06,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=804, PETRI_PLACES=388, PETRI_TRANSITIONS=382} [2022-11-20 12:50:06,564 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 3 predicate places. [2022-11-20 12:50:06,564 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 382 transitions, 804 flow [2022-11-20 12:50:06,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 246.625) internal successors, (1973), 8 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:06,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:06,566 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:06,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:50:06,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:06,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 219340709, now seen corresponding path program 1 times [2022-11-20 12:50:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:06,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735511413] [2022-11-20 12:50:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:06,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735511413] [2022-11-20 12:50:06,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735511413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:06,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:06,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:50:06,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121927508] [2022-11-20 12:50:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:06,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:50:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:50:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:50:06,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 408 [2022-11-20 12:50:06,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 382 transitions, 804 flow. Second operand has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:06,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:06,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 408 [2022-11-20 12:50:06,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:07,002 INFO L130 PetriNetUnfolder]: 7/714 cut-off events. [2022-11-20 12:50:07,003 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-20 12:50:07,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 714 events. 7/714 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1258 event pairs, 0 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 630. Up to 16 conditions per place. [2022-11-20 12:50:07,006 INFO L137 encePairwiseOnDemand]: 405/408 looper letters, 11 selfloop transitions, 2 changer transitions 0/386 dead transitions. [2022-11-20 12:50:07,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 386 transitions, 838 flow [2022-11-20 12:50:07,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:50:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:50:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2022-11-20 12:50:07,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2022-11-20 12:50:07,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2022-11-20 12:50:07,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2022-11-20 12:50:07,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:07,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2022-11-20 12:50:07,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:07,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:07,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:07,016 INFO L175 Difference]: Start difference. First operand has 388 places, 382 transitions, 804 flow. Second operand 3 states and 1148 transitions. [2022-11-20 12:50:07,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 386 transitions, 838 flow [2022-11-20 12:50:07,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 386 transitions, 824 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:50:07,025 INFO L231 Difference]: Finished difference. Result has 384 places, 383 transitions, 802 flow [2022-11-20 12:50:07,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=802, PETRI_PLACES=384, PETRI_TRANSITIONS=383} [2022-11-20 12:50:07,028 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, -1 predicate places. [2022-11-20 12:50:07,028 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 383 transitions, 802 flow [2022-11-20 12:50:07,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:07,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:07,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:07,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:50:07,030 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:07,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:07,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1314887178, now seen corresponding path program 1 times [2022-11-20 12:50:07,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:07,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649376825] [2022-11-20 12:50:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:07,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:07,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:07,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607312052] [2022-11-20 12:50:07,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:07,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:07,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:07,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:07,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:50:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:07,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:50:07,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:07,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:50:07,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:50:07,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:07,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:50:07,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:07,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:50:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:07,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:07,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649376825] [2022-11-20 12:50:07,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:07,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607312052] [2022-11-20 12:50:07,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607312052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:07,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:07,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175586007] [2022-11-20 12:50:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:07,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:07,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:07,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 408 [2022-11-20 12:50:07,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 383 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:07,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:07,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 408 [2022-11-20 12:50:07,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:08,066 INFO L130 PetriNetUnfolder]: 278/1599 cut-off events. [2022-11-20 12:50:08,067 INFO L131 PetriNetUnfolder]: For 13/20 co-relation queries the response was YES. [2022-11-20 12:50:08,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 1599 events. 278/1599 cut-off events. For 13/20 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7453 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 1925. Up to 788 conditions per place. [2022-11-20 12:50:08,076 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 128 selfloop transitions, 5 changer transitions 0/382 dead transitions. [2022-11-20 12:50:08,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 382 transitions, 1066 flow [2022-11-20 12:50:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1622 transitions. [2022-11-20 12:50:08,081 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6625816993464052 [2022-11-20 12:50:08,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1622 transitions. [2022-11-20 12:50:08,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1622 transitions. [2022-11-20 12:50:08,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:08,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1622 transitions. [2022-11-20 12:50:08,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.3333333333333) internal successors, (1622), 6 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:08,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:08,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:08,093 INFO L175 Difference]: Start difference. First operand has 384 places, 383 transitions, 802 flow. Second operand 6 states and 1622 transitions. [2022-11-20 12:50:08,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 382 transitions, 1066 flow [2022-11-20 12:50:08,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 382 transitions, 1064 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:50:08,101 INFO L231 Difference]: Finished difference. Result has 387 places, 382 transitions, 808 flow [2022-11-20 12:50:08,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=808, PETRI_PLACES=387, PETRI_TRANSITIONS=382} [2022-11-20 12:50:08,104 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 2 predicate places. [2022-11-20 12:50:08,104 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 382 transitions, 808 flow [2022-11-20 12:50:08,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:08,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:08,105 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:08,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 12:50:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:08,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1083173923, now seen corresponding path program 1 times [2022-11-20 12:50:08,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:08,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531802595] [2022-11-20 12:50:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:08,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:08,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654745688] [2022-11-20 12:50:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:08,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:08,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:08,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:50:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:08,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:50:08,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:08,576 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 13 treesize of output 9 [2022-11-20 12:50:08,586 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 23 treesize of output 22 [2022-11-20 12:50:08,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:08,606 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 32 treesize of output 34 [2022-11-20 12:50:08,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:08,633 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 41 treesize of output 46 [2022-11-20 12:50:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:08,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:08,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:08,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531802595] [2022-11-20 12:50:08,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:08,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654745688] [2022-11-20 12:50:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654745688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:08,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:08,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682122564] [2022-11-20 12:50:08,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:08,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:08,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 408 [2022-11-20 12:50:08,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 382 transitions, 808 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:08,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:08,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 408 [2022-11-20 12:50:08,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:09,359 INFO L130 PetriNetUnfolder]: 278/1595 cut-off events. [2022-11-20 12:50:09,359 INFO L131 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-11-20 12:50:09,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 1595 events. 278/1595 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7476 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 1974. Up to 788 conditions per place. [2022-11-20 12:50:09,367 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 128 selfloop transitions, 5 changer transitions 0/381 dead transitions. [2022-11-20 12:50:09,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 381 transitions, 1072 flow [2022-11-20 12:50:09,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1616 transitions. [2022-11-20 12:50:09,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-11-20 12:50:09,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1616 transitions. [2022-11-20 12:50:09,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1616 transitions. [2022-11-20 12:50:09,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:09,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1616 transitions. [2022-11-20 12:50:09,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:09,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:09,381 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:09,381 INFO L175 Difference]: Start difference. First operand has 387 places, 382 transitions, 808 flow. Second operand 6 states and 1616 transitions. [2022-11-20 12:50:09,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 381 transitions, 1072 flow [2022-11-20 12:50:09,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 381 transitions, 1062 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:09,389 INFO L231 Difference]: Finished difference. Result has 386 places, 381 transitions, 806 flow [2022-11-20 12:50:09,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=386, PETRI_TRANSITIONS=381} [2022-11-20 12:50:09,391 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 1 predicate places. [2022-11-20 12:50:09,391 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 381 transitions, 806 flow [2022-11-20 12:50:09,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:09,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:09,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:09,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:09,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:50:09,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash 74375907, now seen corresponding path program 1 times [2022-11-20 12:50:09,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:09,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517344008] [2022-11-20 12:50:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:09,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:09,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:09,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573789190] [2022-11-20 12:50:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:09,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:09,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:09,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:50:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:09,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:50:09,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:10,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:50:10,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:10,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:50:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:10,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:10,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:50:10,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:10,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:10,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:50:10,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:10,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:50:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:10,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:10,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:10,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517344008] [2022-11-20 12:50:10,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:10,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573789190] [2022-11-20 12:50:10,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573789190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:10,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:10,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:50:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658261481] [2022-11-20 12:50:10,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:10,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:50:10,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:10,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:50:10,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:50:10,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 408 [2022-11-20 12:50:10,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 381 transitions, 806 flow. Second operand has 13 states, 13 states have (on average 234.53846153846155) internal successors, (3049), 13 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:10,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:10,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 408 [2022-11-20 12:50:10,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:11,364 INFO L130 PetriNetUnfolder]: 278/1591 cut-off events. [2022-11-20 12:50:11,365 INFO L131 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-11-20 12:50:11,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 1591 events. 278/1591 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7414 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 2023. Up to 598 conditions per place. [2022-11-20 12:50:11,373 INFO L137 encePairwiseOnDemand]: 389/408 looper letters, 164 selfloop transitions, 26 changer transitions 0/420 dead transitions. [2022-11-20 12:50:11,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 420 transitions, 1270 flow [2022-11-20 12:50:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:50:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:50:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5021 transitions. [2022-11-20 12:50:11,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5860177404295052 [2022-11-20 12:50:11,425 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5021 transitions. [2022-11-20 12:50:11,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5021 transitions. [2022-11-20 12:50:11,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:11,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5021 transitions. [2022-11-20 12:50:11,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 239.0952380952381) internal successors, (5021), 21 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:11,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:11,463 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:11,464 INFO L175 Difference]: Start difference. First operand has 386 places, 381 transitions, 806 flow. Second operand 21 states and 5021 transitions. [2022-11-20 12:50:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 420 transitions, 1270 flow [2022-11-20 12:50:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 420 transitions, 1260 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:11,474 INFO L231 Difference]: Finished difference. Result has 403 places, 392 transitions, 895 flow [2022-11-20 12:50:11,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=895, PETRI_PLACES=403, PETRI_TRANSITIONS=392} [2022-11-20 12:50:11,475 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 18 predicate places. [2022-11-20 12:50:11,475 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 392 transitions, 895 flow [2022-11-20 12:50:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 234.53846153846155) internal successors, (3049), 13 states have internal predecessors, (3049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:11,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:11,477 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:11,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:11,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 12:50:11,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:11,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1621947603, now seen corresponding path program 1 times [2022-11-20 12:50:11,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:11,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925425417] [2022-11-20 12:50:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:11,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:11,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:11,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060346413] [2022-11-20 12:50:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:11,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:11,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:50:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:11,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:50:12,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:12,032 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 13 treesize of output 9 [2022-11-20 12:50:12,043 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 23 treesize of output 22 [2022-11-20 12:50:12,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:12,073 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 32 treesize of output 34 [2022-11-20 12:50:12,100 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:12,100 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 41 treesize of output 46 [2022-11-20 12:50:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:12,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:12,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:12,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925425417] [2022-11-20 12:50:12,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:12,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060346413] [2022-11-20 12:50:12,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060346413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:12,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:12,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:12,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003065722] [2022-11-20 12:50:12,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:12,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:12,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:12,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:12,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:12,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 408 [2022-11-20 12:50:12,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 392 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:12,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:12,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 408 [2022-11-20 12:50:12,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:12,791 INFO L130 PetriNetUnfolder]: 278/1587 cut-off events. [2022-11-20 12:50:12,792 INFO L131 PetriNetUnfolder]: For 30/37 co-relation queries the response was YES. [2022-11-20 12:50:12,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 1587 events. 278/1587 cut-off events. For 30/37 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7427 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 2015. Up to 788 conditions per place. [2022-11-20 12:50:12,799 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 129 selfloop transitions, 5 changer transitions 0/391 dead transitions. [2022-11-20 12:50:12,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 391 transitions, 1161 flow [2022-11-20 12:50:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1604 transitions. [2022-11-20 12:50:12,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-11-20 12:50:12,803 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1604 transitions. [2022-11-20 12:50:12,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1604 transitions. [2022-11-20 12:50:12,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:12,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1604 transitions. [2022-11-20 12:50:12,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.3333333333333) internal successors, (1604), 6 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:12,813 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:12,813 INFO L175 Difference]: Start difference. First operand has 403 places, 392 transitions, 895 flow. Second operand 6 states and 1604 transitions. [2022-11-20 12:50:12,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 391 transitions, 1161 flow [2022-11-20 12:50:12,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 391 transitions, 1142 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 12:50:12,821 INFO L231 Difference]: Finished difference. Result has 400 places, 391 transitions, 884 flow [2022-11-20 12:50:12,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=884, PETRI_PLACES=400, PETRI_TRANSITIONS=391} [2022-11-20 12:50:12,823 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 15 predicate places. [2022-11-20 12:50:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 391 transitions, 884 flow [2022-11-20 12:50:12,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:12,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:12,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:12,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:13,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:13,030 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash -375170282, now seen corresponding path program 1 times [2022-11-20 12:50:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:13,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407533752] [2022-11-20 12:50:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:13,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:13,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:13,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586528505] [2022-11-20 12:50:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:13,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:13,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:13,066 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:13,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:50:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:13,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:50:13,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:13,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:50:13,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:50:13,371 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:13,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:50:13,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:13,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:50:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:13,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:13,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407533752] [2022-11-20 12:50:13,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:13,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586528505] [2022-11-20 12:50:13,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586528505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:13,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:13,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153107647] [2022-11-20 12:50:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:13,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:13,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 408 [2022-11-20 12:50:13,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 391 transitions, 884 flow. Second operand has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:13,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:13,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 408 [2022-11-20 12:50:13,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:14,038 INFO L130 PetriNetUnfolder]: 278/1583 cut-off events. [2022-11-20 12:50:14,039 INFO L131 PetriNetUnfolder]: For 30/37 co-relation queries the response was YES. [2022-11-20 12:50:14,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 1583 events. 278/1583 cut-off events. For 30/37 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7415 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 2049. Up to 780 conditions per place. [2022-11-20 12:50:14,046 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 127 selfloop transitions, 5 changer transitions 0/390 dead transitions. [2022-11-20 12:50:14,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 390 transitions, 1146 flow [2022-11-20 12:50:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:14,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1608 transitions. [2022-11-20 12:50:14,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2022-11-20 12:50:14,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1608 transitions. [2022-11-20 12:50:14,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1608 transitions. [2022-11-20 12:50:14,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:14,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1608 transitions. [2022-11-20 12:50:14,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:14,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:14,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:14,061 INFO L175 Difference]: Start difference. First operand has 400 places, 391 transitions, 884 flow. Second operand 6 states and 1608 transitions. [2022-11-20 12:50:14,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 390 transitions, 1146 flow [2022-11-20 12:50:14,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 390 transitions, 1136 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:14,069 INFO L231 Difference]: Finished difference. Result has 399 places, 390 transitions, 882 flow [2022-11-20 12:50:14,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=882, PETRI_PLACES=399, PETRI_TRANSITIONS=390} [2022-11-20 12:50:14,070 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 14 predicate places. [2022-11-20 12:50:14,070 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 390 transitions, 882 flow [2022-11-20 12:50:14,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:14,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:14,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:14,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:14,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:14,278 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1003768281, now seen corresponding path program 1 times [2022-11-20 12:50:14,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:14,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791521804] [2022-11-20 12:50:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:14,312 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:14,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852053499] [2022-11-20 12:50:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:14,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:14,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:14,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:14,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:50:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:14,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:50:14,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:14,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:14,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:14,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791521804] [2022-11-20 12:50:14,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:14,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852053499] [2022-11-20 12:50:14,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852053499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:50:14,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:50:14,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:50:14,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671891098] [2022-11-20 12:50:14,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:14,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:50:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:50:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:50:14,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-11-20 12:50:14,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 390 transitions, 882 flow. Second operand has 8 states, 8 states have (on average 378.875) internal successors, (3031), 8 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:14,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:14,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-11-20 12:50:14,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:15,152 INFO L130 PetriNetUnfolder]: 7/880 cut-off events. [2022-11-20 12:50:15,152 INFO L131 PetriNetUnfolder]: For 18/19 co-relation queries the response was YES. [2022-11-20 12:50:15,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 880 events. 7/880 cut-off events. For 18/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 796 event pairs, 0 based on Foata normal form. 4/862 useless extension candidates. Maximal degree in co-relation 922. Up to 19 conditions per place. [2022-11-20 12:50:15,155 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 12 selfloop transitions, 9 changer transitions 0/400 dead transitions. [2022-11-20 12:50:15,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 400 transitions, 946 flow [2022-11-20 12:50:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:50:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:50:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3416 transitions. [2022-11-20 12:50:15,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302832244008714 [2022-11-20 12:50:15,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3416 transitions. [2022-11-20 12:50:15,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3416 transitions. [2022-11-20 12:50:15,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:15,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3416 transitions. [2022-11-20 12:50:15,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 379.55555555555554) internal successors, (3416), 9 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:15,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:15,178 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:15,178 INFO L175 Difference]: Start difference. First operand has 399 places, 390 transitions, 882 flow. Second operand 9 states and 3416 transitions. [2022-11-20 12:50:15,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 400 transitions, 946 flow [2022-11-20 12:50:15,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 400 transitions, 936 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:15,186 INFO L231 Difference]: Finished difference. Result has 405 places, 396 transitions, 922 flow [2022-11-20 12:50:15,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=405, PETRI_TRANSITIONS=396} [2022-11-20 12:50:15,187 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 20 predicate places. [2022-11-20 12:50:15,187 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 396 transitions, 922 flow [2022-11-20 12:50:15,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 378.875) internal successors, (3031), 8 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:15,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:15,189 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:15,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:15,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:50:15,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash -936527271, now seen corresponding path program 2 times [2022-11-20 12:50:15,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:15,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874412165] [2022-11-20 12:50:15,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:15,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:15,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:15,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674522855] [2022-11-20 12:50:15,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:50:15,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:15,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:15,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:15,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:50:15,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:50:15,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:50:15,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:50:15,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:15,796 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 [2022-11-20 12:50:15,805 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 [2022-11-20 12:50:15,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:15,824 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 [2022-11-20 12:50:15,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:15,848 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 [2022-11-20 12:50:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-20 12:50:15,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:15,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:15,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874412165] [2022-11-20 12:50:15,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:15,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674522855] [2022-11-20 12:50:15,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674522855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:15,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:15,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:15,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093386197] [2022-11-20 12:50:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:15,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:15,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:15,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 408 [2022-11-20 12:50:15,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 396 transitions, 922 flow. Second operand has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:15,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:15,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 408 [2022-11-20 12:50:15,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:16,731 INFO L130 PetriNetUnfolder]: 308/1791 cut-off events. [2022-11-20 12:50:16,732 INFO L131 PetriNetUnfolder]: For 48/55 co-relation queries the response was YES. [2022-11-20 12:50:16,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1791 events. 308/1791 cut-off events. For 48/55 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7048 event pairs, 282 based on Foata normal form. 0/1652 useless extension candidates. Maximal degree in co-relation 2185. Up to 920 conditions per place. [2022-11-20 12:50:16,740 INFO L137 encePairwiseOnDemand]: 396/408 looper letters, 133 selfloop transitions, 10 changer transitions 0/394 dead transitions. [2022-11-20 12:50:16,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 394 transitions, 1204 flow [2022-11-20 12:50:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1547 transitions. [2022-11-20 12:50:16,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2022-11-20 12:50:16,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1547 transitions. [2022-11-20 12:50:16,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1547 transitions. [2022-11-20 12:50:16,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:16,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1547 transitions. [2022-11-20 12:50:16,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.8333333333333) internal successors, (1547), 6 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:16,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:16,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:16,755 INFO L175 Difference]: Start difference. First operand has 405 places, 396 transitions, 922 flow. Second operand 6 states and 1547 transitions. [2022-11-20 12:50:16,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 394 transitions, 1204 flow [2022-11-20 12:50:16,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 394 transitions, 1198 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-20 12:50:16,763 INFO L231 Difference]: Finished difference. Result has 407 places, 394 transitions, 932 flow [2022-11-20 12:50:16,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=932, PETRI_PLACES=407, PETRI_TRANSITIONS=394} [2022-11-20 12:50:16,764 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 22 predicate places. [2022-11-20 12:50:16,764 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 394 transitions, 932 flow [2022-11-20 12:50:16,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:16,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:16,766 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:16,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:16,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:50:16,972 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:16,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1769411408, now seen corresponding path program 1 times [2022-11-20 12:50:16,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:16,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996508246] [2022-11-20 12:50:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:16,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:17,041 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:17,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904984080] [2022-11-20 12:50:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:17,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:17,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:17,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:17,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:50:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:17,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:50:17,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:18,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:18,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996508246] [2022-11-20 12:50:18,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:18,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904984080] [2022-11-20 12:50:18,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904984080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:50:18,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:50:18,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:50:18,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326935322] [2022-11-20 12:50:18,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:18,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:50:18,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:50:18,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:50:18,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-11-20 12:50:18,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 394 transitions, 932 flow. Second operand has 16 states, 16 states have (on average 379.1875) internal successors, (6067), 16 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:18,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:18,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-11-20 12:50:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:19,348 INFO L130 PetriNetUnfolder]: 7/1606 cut-off events. [2022-11-20 12:50:19,348 INFO L131 PetriNetUnfolder]: For 82/83 co-relation queries the response was YES. [2022-11-20 12:50:19,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2074 conditions, 1606 events. 7/1606 cut-off events. For 82/83 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 789 event pairs, 0 based on Foata normal form. 8/1594 useless extension candidates. Maximal degree in co-relation 1902. Up to 43 conditions per place. [2022-11-20 12:50:19,353 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 20 selfloop transitions, 21 changer transitions 0/418 dead transitions. [2022-11-20 12:50:19,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 418 transitions, 1114 flow [2022-11-20 12:50:19,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:50:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:50:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7962 transitions. [2022-11-20 12:50:19,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9292717086834734 [2022-11-20 12:50:19,369 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7962 transitions. [2022-11-20 12:50:19,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7962 transitions. [2022-11-20 12:50:19,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:19,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7962 transitions. [2022-11-20 12:50:19,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 379.14285714285717) internal successors, (7962), 21 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:19,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:19,413 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:19,413 INFO L175 Difference]: Start difference. First operand has 407 places, 394 transitions, 932 flow. Second operand 21 states and 7962 transitions. [2022-11-20 12:50:19,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 418 transitions, 1114 flow [2022-11-20 12:50:19,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 418 transitions, 1094 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:19,423 INFO L231 Difference]: Finished difference. Result has 427 places, 407 transitions, 1042 flow [2022-11-20 12:50:19,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1042, PETRI_PLACES=427, PETRI_TRANSITIONS=407} [2022-11-20 12:50:19,424 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 42 predicate places. [2022-11-20 12:50:19,424 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 407 transitions, 1042 flow [2022-11-20 12:50:19,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 379.1875) internal successors, (6067), 16 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:19,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:19,427 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:19,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 12:50:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:50:19,636 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1136823728, now seen corresponding path program 2 times [2022-11-20 12:50:19,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:19,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540259875] [2022-11-20 12:50:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:19,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:19,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671580838] [2022-11-20 12:50:19,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:50:19,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:19,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:19,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:19,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:50:20,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:50:20,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:50:20,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:50:20,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:20,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:50:20,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:50:20,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:20,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:50:20,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:20,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:50:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-20 12:50:20,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:20,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:20,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540259875] [2022-11-20 12:50:20,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:20,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671580838] [2022-11-20 12:50:20,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671580838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:20,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:20,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759357167] [2022-11-20 12:50:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:20,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:20,477 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 408 [2022-11-20 12:50:20,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 407 transitions, 1042 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:20,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:20,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 408 [2022-11-20 12:50:20,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:21,776 INFO L130 PetriNetUnfolder]: 278/2494 cut-off events. [2022-11-20 12:50:21,776 INFO L131 PetriNetUnfolder]: For 136/143 co-relation queries the response was YES. [2022-11-20 12:50:21,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4124 conditions, 2494 events. 278/2494 cut-off events. For 136/143 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6996 event pairs, 252 based on Foata normal form. 0/2361 useless extension candidates. Maximal degree in co-relation 2730. Up to 1168 conditions per place. [2022-11-20 12:50:21,786 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 120 selfloop transitions, 5 changer transitions 0/406 dead transitions. [2022-11-20 12:50:21,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 406 transitions, 1290 flow [2022-11-20 12:50:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:21,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1620 transitions. [2022-11-20 12:50:21,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-11-20 12:50:21,792 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1620 transitions. [2022-11-20 12:50:21,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1620 transitions. [2022-11-20 12:50:21,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:21,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1620 transitions. [2022-11-20 12:50:21,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.0) internal successors, (1620), 6 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:21,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:21,803 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:21,804 INFO L175 Difference]: Start difference. First operand has 427 places, 407 transitions, 1042 flow. Second operand 6 states and 1620 transitions. [2022-11-20 12:50:21,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 406 transitions, 1290 flow [2022-11-20 12:50:21,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 406 transitions, 1266 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 12:50:21,816 INFO L231 Difference]: Finished difference. Result has 425 places, 406 transitions, 1026 flow [2022-11-20 12:50:21,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1026, PETRI_PLACES=425, PETRI_TRANSITIONS=406} [2022-11-20 12:50:21,818 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 40 predicate places. [2022-11-20 12:50:21,818 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 406 transitions, 1026 flow [2022-11-20 12:50:21,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:21,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:21,819 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:21,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:22,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:50:22,027 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash -152451107, now seen corresponding path program 1 times [2022-11-20 12:50:22,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:22,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286555296] [2022-11-20 12:50:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:22,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:22,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709550832] [2022-11-20 12:50:22,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:22,237 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:22,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:50:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:23,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:50:23,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:24,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:50:25,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:25,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286555296] [2022-11-20 12:50:25,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:25,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709550832] [2022-11-20 12:50:25,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709550832] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:50:25,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:50:25,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-20 12:50:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397494729] [2022-11-20 12:50:25,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:25,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:50:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:50:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:50:25,565 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-11-20 12:50:25,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 406 transitions, 1026 flow. Second operand has 32 states, 32 states have (on average 379.34375) internal successors, (12139), 32 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:25,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:25,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-11-20 12:50:25,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:27,549 INFO L130 PetriNetUnfolder]: 7/3061 cut-off events. [2022-11-20 12:50:27,549 INFO L131 PetriNetUnfolder]: For 630/631 co-relation queries the response was YES. [2022-11-20 12:50:27,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 3061 events. 7/3061 cut-off events. For 630/631 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 786 event pairs, 0 based on Foata normal form. 16/3058 useless extension candidates. Maximal degree in co-relation 3962. Up to 91 conditions per place. [2022-11-20 12:50:27,558 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 36 selfloop transitions, 45 changer transitions 0/457 dead transitions. [2022-11-20 12:50:27,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 457 transitions, 1488 flow [2022-11-20 12:50:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:50:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 12:50:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 17054 transitions. [2022-11-20 12:50:27,577 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9288671023965142 [2022-11-20 12:50:27,577 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 17054 transitions. [2022-11-20 12:50:27,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 17054 transitions. [2022-11-20 12:50:27,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:27,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 17054 transitions. [2022-11-20 12:50:27,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 378.97777777777776) internal successors, (17054), 45 states have internal predecessors, (17054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:27,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 408.0) internal successors, (18768), 46 states have internal predecessors, (18768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:27,638 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 408.0) internal successors, (18768), 46 states have internal predecessors, (18768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:27,638 INFO L175 Difference]: Start difference. First operand has 425 places, 406 transitions, 1026 flow. Second operand 45 states and 17054 transitions. [2022-11-20 12:50:27,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 457 transitions, 1488 flow [2022-11-20 12:50:27,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 457 transitions, 1478 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:27,651 INFO L231 Difference]: Finished difference. Result has 473 places, 431 transitions, 1318 flow [2022-11-20 12:50:27,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1318, PETRI_PLACES=473, PETRI_TRANSITIONS=431} [2022-11-20 12:50:27,653 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 88 predicate places. [2022-11-20 12:50:27,653 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 431 transitions, 1318 flow [2022-11-20 12:50:27,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 379.34375) internal successors, (12139), 32 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:27,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:27,656 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:27,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:27,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:50:27,873 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash 593152477, now seen corresponding path program 2 times [2022-11-20 12:50:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:27,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227689105] [2022-11-20 12:50:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:28,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:28,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577204989] [2022-11-20 12:50:28,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:50:28,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:28,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:28,105 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:28,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:50:29,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:50:29,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:50:29,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:50:29,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:29,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:50:29,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 12:50:29,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:29,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:50:29,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:50:29,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:50:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-20 12:50:29,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227689105] [2022-11-20 12:50:29,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577204989] [2022-11-20 12:50:29,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577204989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:29,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:29,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:50:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990714316] [2022-11-20 12:50:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:29,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:50:29,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:50:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:50:29,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 408 [2022-11-20 12:50:29,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 431 transitions, 1318 flow. Second operand has 6 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:29,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:29,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 408 [2022-11-20 12:50:29,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:31,888 INFO L130 PetriNetUnfolder]: 278/3949 cut-off events. [2022-11-20 12:50:31,888 INFO L131 PetriNetUnfolder]: For 582/589 co-relation queries the response was YES. [2022-11-20 12:50:31,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 3949 events. 278/3949 cut-off events. For 582/589 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6985 event pairs, 252 based on Foata normal form. 0/3817 useless extension candidates. Maximal degree in co-relation 5197. Up to 1809 conditions per place. [2022-11-20 12:50:31,897 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 121 selfloop transitions, 5 changer transitions 0/430 dead transitions. [2022-11-20 12:50:31,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 430 transitions, 1568 flow [2022-11-20 12:50:31,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:50:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:50:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1609 transitions. [2022-11-20 12:50:31,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6572712418300654 [2022-11-20 12:50:31,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1609 transitions. [2022-11-20 12:50:31,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1609 transitions. [2022-11-20 12:50:31,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:31,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1609 transitions. [2022-11-20 12:50:31,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.1666666666667) internal successors, (1609), 6 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:31,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:31,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:31,905 INFO L175 Difference]: Start difference. First operand has 473 places, 431 transitions, 1318 flow. Second operand 6 states and 1609 transitions. [2022-11-20 12:50:31,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 430 transitions, 1568 flow [2022-11-20 12:50:31,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 430 transitions, 1512 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-20 12:50:31,920 INFO L231 Difference]: Finished difference. Result has 459 places, 430 transitions, 1270 flow [2022-11-20 12:50:31,921 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1270, PETRI_PLACES=459, PETRI_TRANSITIONS=430} [2022-11-20 12:50:31,921 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 74 predicate places. [2022-11-20 12:50:31,922 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 430 transitions, 1270 flow [2022-11-20 12:50:31,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:31,922 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:31,923 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:31,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:32,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:32,131 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:32,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1705975658, now seen corresponding path program 1 times [2022-11-20 12:50:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:32,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902895355] [2022-11-20 12:50:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:32,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:32,405 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:32,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67786974] [2022-11-20 12:50:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:32,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:32,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:32,415 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:32,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:50:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:34,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 5938 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:50:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-20 12:50:34,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:50:34,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:34,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902895355] [2022-11-20 12:50:34,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:34,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67786974] [2022-11-20 12:50:34,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67786974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:50:34,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:50:34,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:50:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805534748] [2022-11-20 12:50:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:50:34,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:50:34,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:34,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:50:34,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:50:34,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 408 [2022-11-20 12:50:34,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 430 transitions, 1270 flow. Second operand has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:34,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:34,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 408 [2022-11-20 12:50:34,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:36,026 INFO L130 PetriNetUnfolder]: 6/3058 cut-off events. [2022-11-20 12:50:36,026 INFO L131 PetriNetUnfolder]: For 572/578 co-relation queries the response was YES. [2022-11-20 12:50:36,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4087 conditions, 3058 events. 6/3058 cut-off events. For 572/578 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 798 event pairs, 0 based on Foata normal form. 1/3042 useless extension candidates. Maximal degree in co-relation 3881. Up to 91 conditions per place. [2022-11-20 12:50:36,030 INFO L137 encePairwiseOnDemand]: 405/408 looper letters, 9 selfloop transitions, 2 changer transitions 0/432 dead transitions. [2022-11-20 12:50:36,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 432 transitions, 1296 flow [2022-11-20 12:50:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:50:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:50:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1146 transitions. [2022-11-20 12:50:36,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9362745098039216 [2022-11-20 12:50:36,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1146 transitions. [2022-11-20 12:50:36,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1146 transitions. [2022-11-20 12:50:36,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:36,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1146 transitions. [2022-11-20 12:50:36,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.0) internal successors, (1146), 3 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:36,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:36,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:36,035 INFO L175 Difference]: Start difference. First operand has 459 places, 430 transitions, 1270 flow. Second operand 3 states and 1146 transitions. [2022-11-20 12:50:36,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 432 transitions, 1296 flow [2022-11-20 12:50:36,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 432 transitions, 1286 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:50:36,047 INFO L231 Difference]: Finished difference. Result has 457 places, 430 transitions, 1268 flow [2022-11-20 12:50:36,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1268, PETRI_PLACES=457, PETRI_TRANSITIONS=430} [2022-11-20 12:50:36,048 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 72 predicate places. [2022-11-20 12:50:36,048 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 430 transitions, 1268 flow [2022-11-20 12:50:36,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:36,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:36,049 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:36,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:50:36,250 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1195755065, now seen corresponding path program 1 times [2022-11-20 12:50:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672097943] [2022-11-20 12:50:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:36,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:36,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701755065] [2022-11-20 12:50:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:36,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:36,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:36,536 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:36,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:50:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:50:38,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 5963 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:50:38,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:50:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:50:41,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:50:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:50:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:50:44,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672097943] [2022-11-20 12:50:44,006 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:50:44,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701755065] [2022-11-20 12:50:44,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701755065] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:50:44,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:50:44,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-20 12:50:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912149309] [2022-11-20 12:50:44,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:50:44,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-20 12:50:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:50:44,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-20 12:50:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 12:50:44,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-11-20 12:50:44,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 430 transitions, 1268 flow. Second operand has 61 states, 61 states have (on average 379.4754098360656) internal successors, (23148), 61 states have internal predecessors, (23148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:44,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:50:44,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-11-20 12:50:44,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:50:50,830 INFO L130 PetriNetUnfolder]: 6/5788 cut-off events. [2022-11-20 12:50:50,830 INFO L131 PetriNetUnfolder]: For 4433/4434 co-relation queries the response was YES. [2022-11-20 12:50:50,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8165 conditions, 5788 events. 6/5788 cut-off events. For 4433/4434 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 797 event pairs, 0 based on Foata normal form. 30/5802 useless extension candidates. Maximal degree in co-relation 7960. Up to 181 conditions per place. [2022-11-20 12:50:50,843 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 66 selfloop transitions, 90 changer transitions 0/531 dead transitions. [2022-11-20 12:50:50,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 531 transitions, 2354 flow [2022-11-20 12:50:50,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-20 12:50:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-20 12:50:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 34101 transitions. [2022-11-20 12:50:50,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9286764705882353 [2022-11-20 12:50:50,902 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 34101 transitions. [2022-11-20 12:50:50,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 34101 transitions. [2022-11-20 12:50:50,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:50:50,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 34101 transitions. [2022-11-20 12:50:50,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 378.9) internal successors, (34101), 90 states have internal predecessors, (34101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:51,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 408.0) internal successors, (37128), 91 states have internal predecessors, (37128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:51,040 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 408.0) internal successors, (37128), 91 states have internal predecessors, (37128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:51,041 INFO L175 Difference]: Start difference. First operand has 457 places, 430 transitions, 1268 flow. Second operand 90 states and 34101 transitions. [2022-11-20 12:50:51,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 531 transitions, 2354 flow [2022-11-20 12:50:51,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 531 transitions, 2350 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:50:51,073 INFO L231 Difference]: Finished difference. Result has 560 places, 476 transitions, 1918 flow [2022-11-20 12:50:51,074 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1918, PETRI_PLACES=560, PETRI_TRANSITIONS=476} [2022-11-20 12:50:51,074 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 175 predicate places. [2022-11-20 12:50:51,075 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 476 transitions, 1918 flow [2022-11-20 12:50:51,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 379.4754098360656) internal successors, (23148), 61 states have internal predecessors, (23148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:50:51,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:50:51,079 INFO L209 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:50:51,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:50:51,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:50:51,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:50:51,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:50:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash 811613051, now seen corresponding path program 2 times [2022-11-20 12:50:51,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:50:51,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254040049] [2022-11-20 12:50:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:50:51,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:50:51,859 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:50:51,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646381971] [2022-11-20 12:50:51,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:50:51,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:50:51,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:50:51,867 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:50:51,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:50:56,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:50:56,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:50:56,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 11498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:50:56,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:51:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-20 12:51:01,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:51:08,979 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-11-20 12:51:08,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:51:08,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254040049] [2022-11-20 12:51:08,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:51:08,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646381971] [2022-11-20 12:51:08,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646381971] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:51:08,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:51:08,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 12:51:08,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672993235] [2022-11-20 12:51:08,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:51:08,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:51:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:51:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:51:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:51:08,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 408 [2022-11-20 12:51:09,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 476 transitions, 1918 flow. Second operand has 8 states, 8 states have (on average 376.75) internal successors, (3014), 8 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:51:09,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:51:09,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 408 [2022-11-20 12:51:09,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:51:20,548 INFO L130 PetriNetUnfolder]: 7/8549 cut-off events. [2022-11-20 12:51:20,549 INFO L131 PetriNetUnfolder]: For 3254/3255 co-relation queries the response was YES. [2022-11-20 12:51:20,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12267 conditions, 8549 events. 7/8549 cut-off events. For 3254/3255 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 321 event pairs, 0 based on Foata normal form. 2/8535 useless extension candidates. Maximal degree in co-relation 12048. Up to 271 conditions per place. [2022-11-20 12:51:20,566 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 22 selfloop transitions, 9 changer transitions 0/491 dead transitions. [2022-11-20 12:51:20,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 491 transitions, 2019 flow [2022-11-20 12:51:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:51:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:51:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3398 transitions. [2022-11-20 12:51:20,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9253812636165577 [2022-11-20 12:51:20,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3398 transitions. [2022-11-20 12:51:20,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3398 transitions. [2022-11-20 12:51:20,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:51:20,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3398 transitions. [2022-11-20 12:51:20,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 377.55555555555554) internal successors, (3398), 9 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:51:20,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:51:20,581 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:51:20,581 INFO L175 Difference]: Start difference. First operand has 560 places, 476 transitions, 1918 flow. Second operand 9 states and 3398 transitions. [2022-11-20 12:51:20,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 491 transitions, 2019 flow [2022-11-20 12:51:20,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 491 transitions, 1901 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-20 12:51:20,632 INFO L231 Difference]: Finished difference. Result has 529 places, 482 transitions, 1850 flow [2022-11-20 12:51:20,632 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1850, PETRI_PLACES=529, PETRI_TRANSITIONS=482} [2022-11-20 12:51:20,633 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 144 predicate places. [2022-11-20 12:51:20,633 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 482 transitions, 1850 flow [2022-11-20 12:51:20,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 376.75) internal successors, (3014), 8 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:51:20,634 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:51:20,636 INFO L209 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:51:20,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:51:20,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:20,864 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:51:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:51:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2005211415, now seen corresponding path program 3 times [2022-11-20 12:51:20,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:51:20,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120895394] [2022-11-20 12:51:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:51:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:51:22,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:51:22,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726729070] [2022-11-20 12:51:22,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:51:22,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:51:22,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:51:22,157 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:51:22,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:53:39,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 12:53:39,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:53:39,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:53:40,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:53:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-20 12:53:54,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:54:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-11-20 12:54:11,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:54:11,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120895394] [2022-11-20 12:54:11,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:54:11,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726729070] [2022-11-20 12:54:11,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726729070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:54:11,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:54:11,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 12:54:11,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328713892] [2022-11-20 12:54:11,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:54:11,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:54:11,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:54:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:54:11,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:54:11,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 408 [2022-11-20 12:54:11,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 482 transitions, 1850 flow. Second operand has 16 states, 16 states have (on average 377.375) internal successors, (6038), 16 states have internal predecessors, (6038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:54:11,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:54:11,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 408 [2022-11-20 12:54:11,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:55:06,214 INFO L130 PetriNetUnfolder]: 11/19585 cut-off events. [2022-11-20 12:55:06,214 INFO L131 PetriNetUnfolder]: For 8063/8064 co-relation queries the response was YES. [2022-11-20 12:55:06,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27821 conditions, 19585 events. 11/19585 cut-off events. For 8063/8064 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 0 based on Foata normal form. 4/19573 useless extension candidates. Maximal degree in co-relation 27599. Up to 631 conditions per place. [2022-11-20 12:55:06,270 INFO L137 encePairwiseOnDemand]: 402/408 looper letters, 42 selfloop transitions, 21 changer transitions 0/523 dead transitions. [2022-11-20 12:55:06,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 523 transitions, 2145 flow [2022-11-20 12:55:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:55:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 12:55:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7920 transitions. [2022-11-20 12:55:06,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9243697478991597 [2022-11-20 12:55:06,278 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7920 transitions. [2022-11-20 12:55:06,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7920 transitions. [2022-11-20 12:55:06,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:55:06,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7920 transitions. [2022-11-20 12:55:06,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 377.14285714285717) internal successors, (7920), 21 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:06,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:06,304 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:06,304 INFO L175 Difference]: Start difference. First operand has 529 places, 482 transitions, 1850 flow. Second operand 21 states and 7920 transitions. [2022-11-20 12:55:06,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 523 transitions, 2145 flow [2022-11-20 12:55:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 523 transitions, 2131 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 12:55:06,373 INFO L231 Difference]: Finished difference. Result has 553 places, 495 transitions, 1974 flow [2022-11-20 12:55:06,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1974, PETRI_PLACES=553, PETRI_TRANSITIONS=495} [2022-11-20 12:55:06,374 INFO L288 CegarLoopForPetriNet]: 385 programPoint places, 168 predicate places. [2022-11-20 12:55:06,374 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 495 transitions, 1974 flow [2022-11-20 12:55:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 377.375) internal successors, (6038), 16 states have internal predecessors, (6038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:55:06,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:55:06,381 INFO L209 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:55:06,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:55:06,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:55:06,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-11-20 12:55:06,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:55:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2137014587, now seen corresponding path program 4 times [2022-11-20 12:55:06,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:55:06,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930185872] [2022-11-20 12:55:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:55:06,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:55:10,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:55:10,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351284490] [2022-11-20 12:55:10,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:55:10,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:55:10,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:55:10,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:55:10,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb9d232a-7890-4a2c-9dfd-ebba0d625efb/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process