./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:23:56,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:23:56,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:23:56,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:23:56,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:23:56,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:23:56,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:23:56,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:23:56,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:23:56,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:23:56,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:23:56,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:23:56,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:23:56,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:23:56,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:23:56,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:23:56,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:23:56,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:23:56,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:23:56,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:23:56,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:23:56,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:23:56,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:23:56,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:23:56,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:23:56,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:23:56,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:23:56,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:23:56,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:23:56,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:23:56,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:23:56,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:23:56,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:23:56,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:23:56,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:23:56,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:23:56,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:23:56,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:23:56,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:23:56,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:23:56,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:23:56,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 18:23:56,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:23:56,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:23:56,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:23:56,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:23:56,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:23:56,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:23:56,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:23:56,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:23:56,228 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:23:56,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:23:56,229 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:23:56,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:23:56,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:23:56,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:23:56,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:23:56,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:23:56,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:23:56,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:23:56,231 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 18:23:56,231 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:23:56,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:23:56,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:23:56,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:23:56,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:23:56,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:23:56,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:23:56,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:23:56,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:23:56,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:23:56,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:23:56,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:23:56,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:23:56,236 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:23:56,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:23:56,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:23:56,236 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_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df [2022-11-18 18:23:56,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:23:56,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:23:56,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:23:56,516 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:23:56,517 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:23:56,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-18 18:23:56,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/data/15388cdf7/45d5223b3fd241f9b0b350de277f9125/FLAGb8d4f938b [2022-11-18 18:23:57,218 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:23:57,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/sv-benchmarks/c/goblint-regression/09-regions_22-nocollapse.i [2022-11-18 18:23:57,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/data/15388cdf7/45d5223b3fd241f9b0b350de277f9125/FLAGb8d4f938b [2022-11-18 18:23:57,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/data/15388cdf7/45d5223b3fd241f9b0b350de277f9125 [2022-11-18 18:23:57,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:23:57,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:23:57,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:23:57,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:23:57,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:23:57,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:23:57" (1/1) ... [2022-11-18 18:23:57,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e11a826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:57, skipping insertion in model container [2022-11-18 18:23:57,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:23:57" (1/1) ... [2022-11-18 18:23:57,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:23:57,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:23:58,018 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,020 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,021 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,022 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:23:58,064 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:23:58,112 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,124 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,125 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,126 WARN L1568 CHandler]: Possible shadowing of function new [2022-11-18 18:23:58,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:23:58,219 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:23:58,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58 WrapperNode [2022-11-18 18:23:58,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:23:58,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:23:58,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:23:58,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:23:58,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,326 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 217 [2022-11-18 18:23:58,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:23:58,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:23:58,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:23:58,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:23:58,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,395 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:23:58,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:23:58,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:23:58,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:23:58,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (1/1) ... [2022-11-18 18:23:58,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:23:58,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:23:58,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:23:58,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:23:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:23:58,499 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:23:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:23:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:23:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:23:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:23:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:23:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:23:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:23:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:23:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:23:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:23:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:23:58,503 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:23:58,719 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:23:58,725 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:23:59,421 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:23:59,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:23:59,431 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:23:59,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:23:59 BoogieIcfgContainer [2022-11-18 18:23:59,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:23:59,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:23:59,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:23:59,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:23:59,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:23:57" (1/3) ... [2022-11-18 18:23:59,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9f3ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:23:59, skipping insertion in model container [2022-11-18 18:23:59,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:23:58" (2/3) ... [2022-11-18 18:23:59,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b9f3ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:23:59, skipping insertion in model container [2022-11-18 18:23:59,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:23:59" (3/3) ... [2022-11-18 18:23:59,454 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2022-11-18 18:23:59,468 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:23:59,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:23:59,479 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 18:23:59,479 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:23:59,630 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:23:59,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 319 transitions, 648 flow [2022-11-18 18:23:59,810 INFO L130 PetriNetUnfolder]: 15/317 cut-off events. [2022-11-18 18:23:59,810 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:23:59,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 317 events. 15/317 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 588 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 240. Up to 2 conditions per place. [2022-11-18 18:23:59,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 319 transitions, 648 flow [2022-11-18 18:23:59,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 309 places, 317 transitions, 640 flow [2022-11-18 18:23:59,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:23:59,860 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;@1d91ffa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:23:59,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-18 18:23:59,885 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2022-11-18 18:23:59,886 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:23:59,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:23:59,887 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] [2022-11-18 18:23:59,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:23:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:23:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash 331473428, now seen corresponding path program 1 times [2022-11-18 18:23:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:23:59,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127499052] [2022-11-18 18:23:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:23:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:00,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127499052] [2022-11-18 18:24:00,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127499052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:00,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:00,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738893873] [2022-11-18 18:24:00,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:00,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:00,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:00,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 319 [2022-11-18 18:24:00,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 317 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 189.5) internal successors, (1137), 6 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) [2022-11-18 18:24:00,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:00,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 319 [2022-11-18 18:24:00,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:01,916 INFO L130 PetriNetUnfolder]: 744/2631 cut-off events. [2022-11-18 18:24:01,916 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:24:01,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4135 conditions, 2631 events. 744/2631 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17624 event pairs, 600 based on Foata normal form. 248/2507 useless extension candidates. Maximal degree in co-relation 3898. Up to 1439 conditions per place. [2022-11-18 18:24:01,977 INFO L137 encePairwiseOnDemand]: 298/319 looper letters, 110 selfloop transitions, 10 changer transitions 1/306 dead transitions. [2022-11-18 18:24:01,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 306 transitions, 858 flow [2022-11-18 18:24:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1259 transitions. [2022-11-18 18:24:02,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6577847439916406 [2022-11-18 18:24:02,001 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1259 transitions. [2022-11-18 18:24:02,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1259 transitions. [2022-11-18 18:24:02,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:02,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1259 transitions. [2022-11-18 18:24:02,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.83333333333334) internal successors, (1259), 6 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:02,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:02,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:02,030 INFO L175 Difference]: Start difference. First operand has 309 places, 317 transitions, 640 flow. Second operand 6 states and 1259 transitions. [2022-11-18 18:24:02,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 306 transitions, 858 flow [2022-11-18 18:24:02,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 306 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:24:02,050 INFO L231 Difference]: Finished difference. Result has 310 places, 305 transitions, 634 flow [2022-11-18 18:24:02,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=310, PETRI_TRANSITIONS=305} [2022-11-18 18:24:02,059 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 1 predicate places. [2022-11-18 18:24:02,059 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 305 transitions, 634 flow [2022-11-18 18:24:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.5) internal successors, (1137), 6 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) [2022-11-18 18:24:02,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:02,060 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] [2022-11-18 18:24:02,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:24:02,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1614951113, now seen corresponding path program 1 times [2022-11-18 18:24:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:02,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336338970] [2022-11-18 18:24:02,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:02,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:02,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336338970] [2022-11-18 18:24:02,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336338970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:02,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:02,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:02,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108547645] [2022-11-18 18:24:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:02,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:02,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 319 [2022-11-18 18:24:02,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 305 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:02,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:02,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 319 [2022-11-18 18:24:02,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:03,563 INFO L130 PetriNetUnfolder]: 744/2628 cut-off events. [2022-11-18 18:24:03,563 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:24:03,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 2628 events. 744/2628 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17557 event pairs, 600 based on Foata normal form. 0/2259 useless extension candidates. Maximal degree in co-relation 3943. Up to 1437 conditions per place. [2022-11-18 18:24:03,585 INFO L137 encePairwiseOnDemand]: 307/319 looper letters, 108 selfloop transitions, 10 changer transitions 0/303 dead transitions. [2022-11-18 18:24:03,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 303 transitions, 866 flow [2022-11-18 18:24:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1248 transitions. [2022-11-18 18:24:03,589 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6520376175548589 [2022-11-18 18:24:03,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1248 transitions. [2022-11-18 18:24:03,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1248 transitions. [2022-11-18 18:24:03,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:03,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1248 transitions. [2022-11-18 18:24:03,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,599 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,600 INFO L175 Difference]: Start difference. First operand has 310 places, 305 transitions, 634 flow. Second operand 6 states and 1248 transitions. [2022-11-18 18:24:03,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 303 transitions, 866 flow [2022-11-18 18:24:03,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 303 transitions, 846 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:24:03,607 INFO L231 Difference]: Finished difference. Result has 307 places, 303 transitions, 630 flow [2022-11-18 18:24:03,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=307, PETRI_TRANSITIONS=303} [2022-11-18 18:24:03,608 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, -2 predicate places. [2022-11-18 18:24:03,609 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 303 transitions, 630 flow [2022-11-18 18:24:03,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:03,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:24:03,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:24:03,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2083926756, now seen corresponding path program 1 times [2022-11-18 18:24:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:03,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709945543] [2022-11-18 18:24:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:03,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:03,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:03,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709945543] [2022-11-18 18:24:03,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709945543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:03,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:03,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:03,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027676912] [2022-11-18 18:24:03,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:03,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:24:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:03,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:24:03,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:24:03,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 319 [2022-11-18 18:24:03,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 303 transitions, 630 flow. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:03,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 319 [2022-11-18 18:24:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:03,767 INFO L130 PetriNetUnfolder]: 7/427 cut-off events. [2022-11-18 18:24:03,767 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:24:03,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 427 events. 7/427 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1023 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 220. Up to 13 conditions per place. [2022-11-18 18:24:03,770 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 17 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-11-18 18:24:03,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 310 transitions, 682 flow [2022-11-18 18:24:03,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:24:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:24:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 914 transitions. [2022-11-18 18:24:03,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.955067920585162 [2022-11-18 18:24:03,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 914 transitions. [2022-11-18 18:24:03,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 914 transitions. [2022-11-18 18:24:03,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:03,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 914 transitions. [2022-11-18 18:24:03,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.6666666666667) internal successors, (914), 3 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,781 INFO L175 Difference]: Start difference. First operand has 307 places, 303 transitions, 630 flow. Second operand 3 states and 914 transitions. [2022-11-18 18:24:03,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 310 transitions, 682 flow [2022-11-18 18:24:03,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 310 transitions, 662 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:24:03,787 INFO L231 Difference]: Finished difference. Result has 305 places, 304 transitions, 622 flow [2022-11-18 18:24:03,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=305, PETRI_TRANSITIONS=304} [2022-11-18 18:24:03,791 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, -4 predicate places. [2022-11-18 18:24:03,792 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 304 transitions, 622 flow [2022-11-18 18:24:03,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:03,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:03,796 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] [2022-11-18 18:24:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:24:03,797 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1720024373, now seen corresponding path program 1 times [2022-11-18 18:24:03,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:03,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778287762] [2022-11-18 18:24:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:03,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:03,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613876751] [2022-11-18 18:24:03,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:03,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:03,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:24:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:03,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:24:03,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:04,061 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 [2022-11-18 18:24:04,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:24:04,100 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 [2022-11-18 18:24:04,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:24:04,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:24:04,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:04,152 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 [2022-11-18 18:24:04,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:24:04,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:24:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:24:04,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:04,213 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 [2022-11-18 18:24:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:04,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:04,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778287762] [2022-11-18 18:24:04,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613876751] [2022-11-18 18:24:04,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613876751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:04,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:04,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:24:04,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265273855] [2022-11-18 18:24:04,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:04,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:24:04,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:24:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:24:04,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 319 [2022-11-18 18:24:04,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 304 transitions, 622 flow. Second operand has 8 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:04,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:04,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 319 [2022-11-18 18:24:04,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:06,064 INFO L130 PetriNetUnfolder]: 1489/5269 cut-off events. [2022-11-18 18:24:06,064 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 18:24:06,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8282 conditions, 5269 events. 1489/5269 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 35817 event pairs, 1200 based on Foata normal form. 0/4537 useless extension candidates. Maximal degree in co-relation 4108. Up to 1480 conditions per place. [2022-11-18 18:24:06,100 INFO L137 encePairwiseOnDemand]: 309/319 looper letters, 166 selfloop transitions, 9 changer transitions 0/364 dead transitions. [2022-11-18 18:24:06,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 364 transitions, 1096 flow [2022-11-18 18:24:06,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:24:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:24:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1895 transitions. [2022-11-18 18:24:06,105 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6600487634970393 [2022-11-18 18:24:06,106 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1895 transitions. [2022-11-18 18:24:06,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1895 transitions. [2022-11-18 18:24:06,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:06,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1895 transitions. [2022-11-18 18:24:06,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 210.55555555555554) internal successors, (1895), 9 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,119 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,119 INFO L175 Difference]: Start difference. First operand has 305 places, 304 transitions, 622 flow. Second operand 9 states and 1895 transitions. [2022-11-18 18:24:06,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 364 transitions, 1096 flow [2022-11-18 18:24:06,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 364 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:06,126 INFO L231 Difference]: Finished difference. Result has 312 places, 304 transitions, 644 flow [2022-11-18 18:24:06,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=312, PETRI_TRANSITIONS=304} [2022-11-18 18:24:06,128 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 3 predicate places. [2022-11-18 18:24:06,128 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 304 transitions, 644 flow [2022-11-18 18:24:06,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 193.625) internal successors, (1549), 8 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:06,129 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] [2022-11-18 18:24:06,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:06,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:06,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash 818834926, now seen corresponding path program 1 times [2022-11-18 18:24:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:06,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084212906] [2022-11-18 18:24:06,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:06,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:06,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084212906] [2022-11-18 18:24:06,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084212906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:06,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:06,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:24:06,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408640892] [2022-11-18 18:24:06,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:06,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:24:06,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:06,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:24:06,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:24:06,425 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 319 [2022-11-18 18:24:06,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 304 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:06,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 319 [2022-11-18 18:24:06,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:06,531 INFO L130 PetriNetUnfolder]: 7/615 cut-off events. [2022-11-18 18:24:06,531 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:24:06,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 615 events. 7/615 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1018 event pairs, 0 based on Foata normal form. 0/579 useless extension candidates. Maximal degree in co-relation 284. Up to 16 conditions per place. [2022-11-18 18:24:06,534 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 11 selfloop transitions, 2 changer transitions 0/308 dead transitions. [2022-11-18 18:24:06,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 308 transitions, 678 flow [2022-11-18 18:24:06,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:24:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:24:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2022-11-18 18:24:06,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9582027168234065 [2022-11-18 18:24:06,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2022-11-18 18:24:06,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2022-11-18 18:24:06,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:06,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2022-11-18 18:24:06,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,543 INFO L175 Difference]: Start difference. First operand has 312 places, 304 transitions, 644 flow. Second operand 3 states and 917 transitions. [2022-11-18 18:24:06,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 308 transitions, 678 flow [2022-11-18 18:24:06,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 308 transitions, 664 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:24:06,549 INFO L231 Difference]: Finished difference. Result has 308 places, 305 transitions, 642 flow [2022-11-18 18:24:06,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=308, PETRI_TRANSITIONS=305} [2022-11-18 18:24:06,550 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, -1 predicate places. [2022-11-18 18:24:06,551 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 305 transitions, 642 flow [2022-11-18 18:24:06,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:06,552 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] [2022-11-18 18:24:06,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:24:06,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:06,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash -129668867, now seen corresponding path program 1 times [2022-11-18 18:24:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:06,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502650371] [2022-11-18 18:24:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:06,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:06,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:06,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110282796] [2022-11-18 18:24:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:06,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:06,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:06,584 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:06,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:24:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:06,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:24:06,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:06,840 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 [2022-11-18 18:24:06,852 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 [2022-11-18 18:24:06,881 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:06,881 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 [2022-11-18 18:24:06,922 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:06,924 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 [2022-11-18 18:24:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:06,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:06,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502650371] [2022-11-18 18:24:06,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:06,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110282796] [2022-11-18 18:24:06,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110282796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:06,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:06,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301979491] [2022-11-18 18:24:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:06,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:06,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 319 [2022-11-18 18:24:06,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 305 transitions, 642 flow. Second operand has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:06,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:06,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 319 [2022-11-18 18:24:06,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:08,058 INFO L130 PetriNetUnfolder]: 745/2936 cut-off events. [2022-11-18 18:24:08,059 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 18:24:08,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 2936 events. 745/2936 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18435 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4097. Up to 1575 conditions per place. [2022-11-18 18:24:08,082 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 104 selfloop transitions, 5 changer transitions 0/304 dead transitions. [2022-11-18 18:24:08,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 304 transitions, 858 flow [2022-11-18 18:24:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1280 transitions. [2022-11-18 18:24:08,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6687565308254964 [2022-11-18 18:24:08,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1280 transitions. [2022-11-18 18:24:08,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1280 transitions. [2022-11-18 18:24:08,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:08,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1280 transitions. [2022-11-18 18:24:08,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.33333333333334) internal successors, (1280), 6 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:08,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:08,097 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:08,097 INFO L175 Difference]: Start difference. First operand has 308 places, 305 transitions, 642 flow. Second operand 6 states and 1280 transitions. [2022-11-18 18:24:08,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 304 transitions, 858 flow [2022-11-18 18:24:08,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 304 transitions, 856 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:08,110 INFO L231 Difference]: Finished difference. Result has 311 places, 304 transitions, 648 flow [2022-11-18 18:24:08,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=311, PETRI_TRANSITIONS=304} [2022-11-18 18:24:08,113 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 2 predicate places. [2022-11-18 18:24:08,114 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 304 transitions, 648 flow [2022-11-18 18:24:08,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:08,115 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:08,115 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] [2022-11-18 18:24:08,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:08,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:24:08,323 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:08,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:08,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1206140671, now seen corresponding path program 1 times [2022-11-18 18:24:08,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:08,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895843416] [2022-11-18 18:24:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:08,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:08,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:08,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43345813] [2022-11-18 18:24:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:08,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:08,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:08,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:08,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:24:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:08,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:24:08,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:08,659 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 [2022-11-18 18:24:08,674 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 [2022-11-18 18:24:08,699 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:08,700 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 [2022-11-18 18:24:08,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:08,736 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 [2022-11-18 18:24:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:08,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:08,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:08,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895843416] [2022-11-18 18:24:08,763 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:08,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43345813] [2022-11-18 18:24:08,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43345813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:08,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:08,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:08,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640882082] [2022-11-18 18:24:08,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:08,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:08,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:08,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 319 [2022-11-18 18:24:08,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 304 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:08,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:08,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 319 [2022-11-18 18:24:08,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:09,639 INFO L130 PetriNetUnfolder]: 745/2932 cut-off events. [2022-11-18 18:24:09,640 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:24:09,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 2932 events. 745/2932 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 18307 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4146. Up to 1575 conditions per place. [2022-11-18 18:24:09,664 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 104 selfloop transitions, 5 changer transitions 0/303 dead transitions. [2022-11-18 18:24:09,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 303 transitions, 864 flow [2022-11-18 18:24:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1274 transitions. [2022-11-18 18:24:09,668 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6656217345872518 [2022-11-18 18:24:09,668 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1274 transitions. [2022-11-18 18:24:09,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1274 transitions. [2022-11-18 18:24:09,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:09,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1274 transitions. [2022-11-18 18:24:09,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.33333333333334) internal successors, (1274), 6 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:09,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:09,677 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:09,677 INFO L175 Difference]: Start difference. First operand has 311 places, 304 transitions, 648 flow. Second operand 6 states and 1274 transitions. [2022-11-18 18:24:09,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 303 transitions, 864 flow [2022-11-18 18:24:09,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 303 transitions, 854 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:24:09,684 INFO L231 Difference]: Finished difference. Result has 310 places, 303 transitions, 646 flow [2022-11-18 18:24:09,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=646, PETRI_PLACES=310, PETRI_TRANSITIONS=303} [2022-11-18 18:24:09,685 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 1 predicate places. [2022-11-18 18:24:09,685 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 303 transitions, 646 flow [2022-11-18 18:24:09,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.5) internal successors, (1203), 6 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:09,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:09,686 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] [2022-11-18 18:24:09,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:09,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -127859489, now seen corresponding path program 1 times [2022-11-18 18:24:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:09,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207278369] [2022-11-18 18:24:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:09,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:09,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505723087] [2022-11-18 18:24:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:09,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:09,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:09,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:09,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:24:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:10,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:24:10,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:10,192 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 [2022-11-18 18:24:10,207 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 [2022-11-18 18:24:10,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:10,235 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 [2022-11-18 18:24:10,269 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:10,270 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 [2022-11-18 18:24:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:10,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207278369] [2022-11-18 18:24:10,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505723087] [2022-11-18 18:24:10,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505723087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:10,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:10,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074053038] [2022-11-18 18:24:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:10,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:10,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:10,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 319 [2022-11-18 18:24:10,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 303 transitions, 646 flow. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:10,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:10,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 319 [2022-11-18 18:24:10,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:11,232 INFO L130 PetriNetUnfolder]: 745/2928 cut-off events. [2022-11-18 18:24:11,233 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:24:11,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 2928 events. 745/2928 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18383 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4170. Up to 1579 conditions per place. [2022-11-18 18:24:11,251 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 105 selfloop transitions, 5 changer transitions 0/302 dead transitions. [2022-11-18 18:24:11,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 302 transitions, 864 flow [2022-11-18 18:24:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2022-11-18 18:24:11,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6598746081504702 [2022-11-18 18:24:11,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2022-11-18 18:24:11,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2022-11-18 18:24:11,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:11,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2022-11-18 18:24:11,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.5) internal successors, (1263), 6 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:11,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:11,266 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:11,267 INFO L175 Difference]: Start difference. First operand has 310 places, 303 transitions, 646 flow. Second operand 6 states and 1263 transitions. [2022-11-18 18:24:11,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 302 transitions, 864 flow [2022-11-18 18:24:11,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 302 transitions, 854 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:24:11,275 INFO L231 Difference]: Finished difference. Result has 309 places, 302 transitions, 644 flow [2022-11-18 18:24:11,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=309, PETRI_TRANSITIONS=302} [2022-11-18 18:24:11,279 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 0 predicate places. [2022-11-18 18:24:11,279 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 302 transitions, 644 flow [2022-11-18 18:24:11,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:11,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:11,280 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] [2022-11-18 18:24:11,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:11,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:11,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:11,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1333821413, now seen corresponding path program 1 times [2022-11-18 18:24:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:11,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862213248] [2022-11-18 18:24:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:11,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:11,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894036267] [2022-11-18 18:24:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:11,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:11,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:11,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:11,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:24:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:11,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:24:11,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:11,987 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 [2022-11-18 18:24:12,014 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 23 treesize of output 22 [2022-11-18 18:24:12,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:12,056 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 32 treesize of output 34 [2022-11-18 18:24:12,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:12,097 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 41 treesize of output 46 [2022-11-18 18:24:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:12,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:12,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:12,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862213248] [2022-11-18 18:24:12,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:12,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894036267] [2022-11-18 18:24:12,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894036267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:12,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:12,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:24:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838819503] [2022-11-18 18:24:12,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:12,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:24:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:24:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:24:12,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 319 [2022-11-18 18:24:12,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 302 transitions, 644 flow. Second operand has 13 states, 13 states have (on average 182.0) internal successors, (2366), 13 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:12,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:12,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 319 [2022-11-18 18:24:12,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:13,720 INFO L130 PetriNetUnfolder]: 745/2924 cut-off events. [2022-11-18 18:24:13,720 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-18 18:24:13,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 2924 events. 745/2924 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18297 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4207. Up to 1385 conditions per place. [2022-11-18 18:24:13,737 INFO L137 encePairwiseOnDemand]: 300/319 looper letters, 139 selfloop transitions, 26 changer transitions 0/341 dead transitions. [2022-11-18 18:24:13,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 341 transitions, 1058 flow [2022-11-18 18:24:13,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:24:13,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:24:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3883 transitions. [2022-11-18 18:24:13,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5796387520525451 [2022-11-18 18:24:13,762 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3883 transitions. [2022-11-18 18:24:13,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3883 transitions. [2022-11-18 18:24:13,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:13,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3883 transitions. [2022-11-18 18:24:13,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 184.9047619047619) internal successors, (3883), 21 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:13,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:13,820 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:13,821 INFO L175 Difference]: Start difference. First operand has 309 places, 302 transitions, 644 flow. Second operand 21 states and 3883 transitions. [2022-11-18 18:24:13,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 341 transitions, 1058 flow [2022-11-18 18:24:13,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 341 transitions, 1048 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:24:13,829 INFO L231 Difference]: Finished difference. Result has 326 places, 313 transitions, 733 flow [2022-11-18 18:24:13,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=733, PETRI_PLACES=326, PETRI_TRANSITIONS=313} [2022-11-18 18:24:13,831 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 17 predicate places. [2022-11-18 18:24:13,831 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 313 transitions, 733 flow [2022-11-18 18:24:13,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.0) internal successors, (2366), 13 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:13,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:13,832 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] [2022-11-18 18:24:13,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:14,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 18:24:14,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:14,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:14,040 INFO L85 PathProgramCache]: Analyzing trace with hash -354418331, now seen corresponding path program 1 times [2022-11-18 18:24:14,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:14,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641929823] [2022-11-18 18:24:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:14,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:14,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878163039] [2022-11-18 18:24:14,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:14,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:14,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:14,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:14,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:24:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:14,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:24:14,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:14,361 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 [2022-11-18 18:24:14,372 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 [2022-11-18 18:24:14,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:14,392 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 [2022-11-18 18:24:14,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:14,416 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 [2022-11-18 18:24:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:14,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:14,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:14,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641929823] [2022-11-18 18:24:14,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:14,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878163039] [2022-11-18 18:24:14,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878163039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:14,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:14,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587167595] [2022-11-18 18:24:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:14,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:14,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 319 [2022-11-18 18:24:14,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 313 transitions, 733 flow. Second operand has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:14,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:14,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 319 [2022-11-18 18:24:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:15,190 INFO L130 PetriNetUnfolder]: 745/2920 cut-off events. [2022-11-18 18:24:15,190 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-18 18:24:15,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 2920 events. 745/2920 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 18315 event pairs, 600 based on Foata normal form. 0/2559 useless extension candidates. Maximal degree in co-relation 4184. Up to 1567 conditions per place. [2022-11-18 18:24:15,209 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 103 selfloop transitions, 5 changer transitions 0/312 dead transitions. [2022-11-18 18:24:15,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 312 transitions, 947 flow [2022-11-18 18:24:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2022-11-18 18:24:15,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6614420062695925 [2022-11-18 18:24:15,214 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1266 transitions. [2022-11-18 18:24:15,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1266 transitions. [2022-11-18 18:24:15,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:15,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1266 transitions. [2022-11-18 18:24:15,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:15,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:15,223 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:15,223 INFO L175 Difference]: Start difference. First operand has 326 places, 313 transitions, 733 flow. Second operand 6 states and 1266 transitions. [2022-11-18 18:24:15,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 312 transitions, 947 flow [2022-11-18 18:24:15,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 312 transitions, 928 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:24:15,231 INFO L231 Difference]: Finished difference. Result has 323 places, 312 transitions, 722 flow [2022-11-18 18:24:15,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=722, PETRI_PLACES=323, PETRI_TRANSITIONS=312} [2022-11-18 18:24:15,232 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 14 predicate places. [2022-11-18 18:24:15,232 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 312 transitions, 722 flow [2022-11-18 18:24:15,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:15,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:15,234 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, 1, 1, 1, 1, 1, 1] [2022-11-18 18:24:15,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:15,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:15,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:15,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:15,442 INFO L85 PathProgramCache]: Analyzing trace with hash 289875646, now seen corresponding path program 1 times [2022-11-18 18:24:15,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:15,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996198412] [2022-11-18 18:24:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:15,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:15,486 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:15,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298282137] [2022-11-18 18:24:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:15,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:15,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:15,488 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:15,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:24:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:15,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:24:15,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:16,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:16,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:16,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996198412] [2022-11-18 18:24:16,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:16,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298282137] [2022-11-18 18:24:16,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298282137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:16,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:24:16,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:24:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46909262] [2022-11-18 18:24:16,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:16,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:24:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:24:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:24:16,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-18 18:24:16,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 312 transitions, 722 flow. Second operand has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:16,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:16,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-18 18:24:16,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:16,502 INFO L130 PetriNetUnfolder]: 7/781 cut-off events. [2022-11-18 18:24:16,502 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-18 18:24:16,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 781 events. 7/781 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 534 event pairs, 0 based on Foata normal form. 4/771 useless extension candidates. Maximal degree in co-relation 397. Up to 19 conditions per place. [2022-11-18 18:24:16,504 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 12 selfloop transitions, 9 changer transitions 0/322 dead transitions. [2022-11-18 18:24:16,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 322 transitions, 786 flow [2022-11-18 18:24:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:24:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:24:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2723 transitions. [2022-11-18 18:24:16,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9484500174155347 [2022-11-18 18:24:16,513 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2723 transitions. [2022-11-18 18:24:16,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2723 transitions. [2022-11-18 18:24:16,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:16,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2723 transitions. [2022-11-18 18:24:16,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 302.55555555555554) internal successors, (2723), 9 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:16,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:16,531 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:16,531 INFO L175 Difference]: Start difference. First operand has 323 places, 312 transitions, 722 flow. Second operand 9 states and 2723 transitions. [2022-11-18 18:24:16,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 322 transitions, 786 flow [2022-11-18 18:24:16,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 322 transitions, 776 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:24:16,540 INFO L231 Difference]: Finished difference. Result has 329 places, 318 transitions, 762 flow [2022-11-18 18:24:16,541 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=762, PETRI_PLACES=329, PETRI_TRANSITIONS=318} [2022-11-18 18:24:16,541 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 20 predicate places. [2022-11-18 18:24:16,542 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 318 transitions, 762 flow [2022-11-18 18:24:16,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 302.0) internal successors, (2416), 8 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:16,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:16,544 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] [2022-11-18 18:24:16,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:16,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:16,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:16,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1138157758, now seen corresponding path program 2 times [2022-11-18 18:24:16,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:16,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17219312] [2022-11-18 18:24:16,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:16,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:16,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:16,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822656222] [2022-11-18 18:24:16,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:24:16,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:16,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:16,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:16,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:24:17,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:24:17,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:24:17,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:24:17,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:17,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:24:17,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:24:17,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:17,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:24:17,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:17,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:24:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-18 18:24:17,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17219312] [2022-11-18 18:24:17,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:17,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822656222] [2022-11-18 18:24:17,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822656222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:17,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:17,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497621238] [2022-11-18 18:24:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:17,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:17,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:17,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:17,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 319 [2022-11-18 18:24:17,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 318 transitions, 762 flow. Second operand has 6 states, 6 states have (on average 188.33333333333334) internal successors, (1130), 6 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:17,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:17,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 319 [2022-11-18 18:24:17,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:19,458 INFO L130 PetriNetUnfolder]: 1693/4872 cut-off events. [2022-11-18 18:24:19,458 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-18 18:24:19,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8657 conditions, 4872 events. 1693/4872 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32241 event pairs, 748 based on Foata normal form. 0/4260 useless extension candidates. Maximal degree in co-relation 7933. Up to 2616 conditions per place. [2022-11-18 18:24:19,486 INFO L137 encePairwiseOnDemand]: 307/319 looper letters, 238 selfloop transitions, 23 changer transitions 0/454 dead transitions. [2022-11-18 18:24:19,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 454 transitions, 1564 flow [2022-11-18 18:24:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1322 transitions. [2022-11-18 18:24:19,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.690700104493208 [2022-11-18 18:24:19,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1322 transitions. [2022-11-18 18:24:19,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1322 transitions. [2022-11-18 18:24:19,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:19,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1322 transitions. [2022-11-18 18:24:19,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.33333333333334) internal successors, (1322), 6 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:19,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:19,500 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:19,500 INFO L175 Difference]: Start difference. First operand has 329 places, 318 transitions, 762 flow. Second operand 6 states and 1322 transitions. [2022-11-18 18:24:19,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 454 transitions, 1564 flow [2022-11-18 18:24:19,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 454 transitions, 1558 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-18 18:24:19,510 INFO L231 Difference]: Finished difference. Result has 338 places, 340 transitions, 914 flow [2022-11-18 18:24:19,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=914, PETRI_PLACES=338, PETRI_TRANSITIONS=340} [2022-11-18 18:24:19,511 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 29 predicate places. [2022-11-18 18:24:19,511 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 340 transitions, 914 flow [2022-11-18 18:24:19,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.33333333333334) internal successors, (1130), 6 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:19,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:19,512 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] [2022-11-18 18:24:19,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:19,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:24:19,720 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:19,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:19,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1322681748, now seen corresponding path program 1 times [2022-11-18 18:24:19,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:19,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653349195] [2022-11-18 18:24:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:19,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:19,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:19,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612044859] [2022-11-18 18:24:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:19,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:19,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:19,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:19,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:24:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:20,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:24:20,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:20,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:21,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:21,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653349195] [2022-11-18 18:24:21,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:21,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612044859] [2022-11-18 18:24:21,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612044859] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:21,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:24:21,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:24:21,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412203498] [2022-11-18 18:24:21,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:21,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:24:21,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:21,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:24:21,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:24:21,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-18 18:24:21,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 340 transitions, 914 flow. Second operand has 16 states, 16 states have (on average 302.3125) internal successors, (4837), 16 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:21,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:21,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-18 18:24:21,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:22,402 INFO L130 PetriNetUnfolder]: 60/2055 cut-off events. [2022-11-18 18:24:22,403 INFO L131 PetriNetUnfolder]: For 116/121 co-relation queries the response was YES. [2022-11-18 18:24:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 2055 events. 60/2055 cut-off events. For 116/121 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4286 event pairs, 8 based on Foata normal form. 8/1987 useless extension candidates. Maximal degree in co-relation 2165. Up to 65 conditions per place. [2022-11-18 18:24:22,410 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 20 selfloop transitions, 21 changer transitions 0/364 dead transitions. [2022-11-18 18:24:22,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 364 transitions, 1096 flow [2022-11-18 18:24:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:24:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:24:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6345 transitions. [2022-11-18 18:24:22,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9471562919838782 [2022-11-18 18:24:22,422 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6345 transitions. [2022-11-18 18:24:22,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6345 transitions. [2022-11-18 18:24:22,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:22,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6345 transitions. [2022-11-18 18:24:22,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 302.14285714285717) internal successors, (6345), 21 states have internal predecessors, (6345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:22,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:22,449 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 319.0) internal successors, (7018), 22 states have internal predecessors, (7018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:22,449 INFO L175 Difference]: Start difference. First operand has 338 places, 340 transitions, 914 flow. Second operand 21 states and 6345 transitions. [2022-11-18 18:24:22,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 364 transitions, 1096 flow [2022-11-18 18:24:22,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 364 transitions, 1096 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:24:22,458 INFO L231 Difference]: Finished difference. Result has 363 places, 353 transitions, 1044 flow [2022-11-18 18:24:22,458 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1044, PETRI_PLACES=363, PETRI_TRANSITIONS=353} [2022-11-18 18:24:22,459 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 54 predicate places. [2022-11-18 18:24:22,459 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 353 transitions, 1044 flow [2022-11-18 18:24:22,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 302.3125) internal successors, (4837), 16 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:22,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:22,461 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] [2022-11-18 18:24:22,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 18:24:22,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:24:22,669 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash -730691180, now seen corresponding path program 2 times [2022-11-18 18:24:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:22,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889468932] [2022-11-18 18:24:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:22,797 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:22,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906478517] [2022-11-18 18:24:22,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:24:22,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:22,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:22,799 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:22,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:24:23,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:24:23,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:24:23,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:24:23,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:23,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:24:23,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-18 18:24:23,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:23,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-18 18:24:23,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:23,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-18 18:24:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-18 18:24:23,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:23,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889468932] [2022-11-18 18:24:23,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:23,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906478517] [2022-11-18 18:24:23,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906478517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:23,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:23,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:23,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984204323] [2022-11-18 18:24:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:23,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:23,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 319 [2022-11-18 18:24:23,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 353 transitions, 1044 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:23,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:23,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 319 [2022-11-18 18:24:23,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:28,271 INFO L130 PetriNetUnfolder]: 2504/7515 cut-off events. [2022-11-18 18:24:28,271 INFO L131 PetriNetUnfolder]: For 1408/1416 co-relation queries the response was YES. [2022-11-18 18:24:28,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14595 conditions, 7515 events. 2504/7515 cut-off events. For 1408/1416 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 49030 event pairs, 904 based on Foata normal form. 0/6666 useless extension candidates. Maximal degree in co-relation 13187. Up to 4000 conditions per place. [2022-11-18 18:24:28,334 INFO L137 encePairwiseOnDemand]: 307/319 looper letters, 271 selfloop transitions, 31 changer transitions 0/509 dead transitions. [2022-11-18 18:24:28,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 509 transitions, 2122 flow [2022-11-18 18:24:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2022-11-18 18:24:28,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6886102403343782 [2022-11-18 18:24:28,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2022-11-18 18:24:28,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2022-11-18 18:24:28,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:28,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2022-11-18 18:24:28,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:28,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:28,422 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:28,422 INFO L175 Difference]: Start difference. First operand has 363 places, 353 transitions, 1044 flow. Second operand 6 states and 1318 transitions. [2022-11-18 18:24:28,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 509 transitions, 2122 flow [2022-11-18 18:24:28,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 509 transitions, 2098 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 18:24:28,440 INFO L231 Difference]: Finished difference. Result has 367 places, 383 transitions, 1278 flow [2022-11-18 18:24:28,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1278, PETRI_PLACES=367, PETRI_TRANSITIONS=383} [2022-11-18 18:24:28,442 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 58 predicate places. [2022-11-18 18:24:28,442 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 383 transitions, 1278 flow [2022-11-18 18:24:28,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:28,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:28,444 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] [2022-11-18 18:24:28,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:28,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:24:28,652 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:28,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1232704904, now seen corresponding path program 1 times [2022-11-18 18:24:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:28,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723973140] [2022-11-18 18:24:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:28,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:28,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572983490] [2022-11-18 18:24:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:28,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:28,859 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:28,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:24:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:30,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:24:30,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:31,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:32,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:32,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723973140] [2022-11-18 18:24:32,923 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:32,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572983490] [2022-11-18 18:24:32,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572983490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:32,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:24:32,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 18:24:32,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213122918] [2022-11-18 18:24:32,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:32,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:24:32,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:24:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:24:32,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-18 18:24:32,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 383 transitions, 1278 flow. Second operand has 32 states, 32 states have (on average 302.375) internal successors, (9676), 32 states have internal predecessors, (9676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:32,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:32,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-18 18:24:32,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:36,087 INFO L130 PetriNetUnfolder]: 148/4133 cut-off events. [2022-11-18 18:24:36,087 INFO L131 PetriNetUnfolder]: For 912/923 co-relation queries the response was YES. [2022-11-18 18:24:36,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5831 conditions, 4133 events. 148/4133 cut-off events. For 912/923 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 10075 event pairs, 15 based on Foata normal form. 16/4015 useless extension candidates. Maximal degree in co-relation 4379. Up to 106 conditions per place. [2022-11-18 18:24:36,099 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 36 selfloop transitions, 45 changer transitions 0/434 dead transitions. [2022-11-18 18:24:36,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 434 transitions, 1740 flow [2022-11-18 18:24:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 18:24:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-18 18:24:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 13589 transitions. [2022-11-18 18:24:36,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9466388018112156 [2022-11-18 18:24:36,116 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 13589 transitions. [2022-11-18 18:24:36,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 13589 transitions. [2022-11-18 18:24:36,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:36,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 13589 transitions. [2022-11-18 18:24:36,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 301.97777777777776) internal successors, (13589), 45 states have internal predecessors, (13589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:36,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 319.0) internal successors, (14674), 46 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:36,177 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 319.0) internal successors, (14674), 46 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:36,177 INFO L175 Difference]: Start difference. First operand has 367 places, 383 transitions, 1278 flow. Second operand 45 states and 13589 transitions. [2022-11-18 18:24:36,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 434 transitions, 1740 flow [2022-11-18 18:24:36,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 434 transitions, 1740 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:24:36,194 INFO L231 Difference]: Finished difference. Result has 420 places, 408 transitions, 1580 flow [2022-11-18 18:24:36,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1580, PETRI_PLACES=420, PETRI_TRANSITIONS=408} [2022-11-18 18:24:36,195 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 111 predicate places. [2022-11-18 18:24:36,195 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 408 transitions, 1580 flow [2022-11-18 18:24:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 302.375) internal successors, (9676), 32 states have internal predecessors, (9676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:36,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:36,199 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] [2022-11-18 18:24:36,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:36,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:24:36,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1096049272, now seen corresponding path program 2 times [2022-11-18 18:24:36,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:36,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12164293] [2022-11-18 18:24:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:36,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:36,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:36,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508943247] [2022-11-18 18:24:36,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:24:36,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:36,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:36,701 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:36,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:24:37,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:24:37,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:24:37,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:24:37,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:37,876 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 [2022-11-18 18:24:37,886 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 [2022-11-18 18:24:37,918 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:37,918 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 [2022-11-18 18:24:37,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:24:37,947 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 [2022-11-18 18:24:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-18 18:24:37,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:24:37,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12164293] [2022-11-18 18:24:37,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508943247] [2022-11-18 18:24:37,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508943247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:24:37,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:24:37,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:24:37,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881660799] [2022-11-18 18:24:37,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:24:37,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:24:37,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:37,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:24:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:24:37,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 319 [2022-11-18 18:24:37,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 408 transitions, 1580 flow. Second operand has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:37,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:37,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 319 [2022-11-18 18:24:37,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:24:45,453 INFO L130 PetriNetUnfolder]: 2016/8405 cut-off events. [2022-11-18 18:24:45,453 INFO L131 PetriNetUnfolder]: For 3429/3437 co-relation queries the response was YES. [2022-11-18 18:24:45,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17053 conditions, 8405 events. 2016/8405 cut-off events. For 3429/3437 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 45463 event pairs, 810 based on Foata normal form. 0/7834 useless extension candidates. Maximal degree in co-relation 14280. Up to 4169 conditions per place. [2022-11-18 18:24:45,497 INFO L137 encePairwiseOnDemand]: 308/319 looper letters, 253 selfloop transitions, 55 changer transitions 0/558 dead transitions. [2022-11-18 18:24:45,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 558 transitions, 2820 flow [2022-11-18 18:24:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:24:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:24:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1367 transitions. [2022-11-18 18:24:45,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7142110762800418 [2022-11-18 18:24:45,501 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1367 transitions. [2022-11-18 18:24:45,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1367 transitions. [2022-11-18 18:24:45,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:24:45,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1367 transitions. [2022-11-18 18:24:45,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.83333333333334) internal successors, (1367), 6 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:45,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:45,509 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:45,510 INFO L175 Difference]: Start difference. First operand has 420 places, 408 transitions, 1580 flow. Second operand 6 states and 1367 transitions. [2022-11-18 18:24:45,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 558 transitions, 2820 flow [2022-11-18 18:24:45,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 558 transitions, 2764 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-18 18:24:45,541 INFO L231 Difference]: Finished difference. Result has 412 places, 457 transitions, 2078 flow [2022-11-18 18:24:45,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2078, PETRI_PLACES=412, PETRI_TRANSITIONS=457} [2022-11-18 18:24:45,543 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 103 predicate places. [2022-11-18 18:24:45,543 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 457 transitions, 2078 flow [2022-11-18 18:24:45,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:45,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:24:45,545 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] [2022-11-18 18:24:45,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:24:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:24:45,755 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:24:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:24:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -950300322, now seen corresponding path program 1 times [2022-11-18 18:24:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:24:45,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650440855] [2022-11-18 18:24:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:24:46,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:24:46,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659350603] [2022-11-18 18:24:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:24:46,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:24:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:24:46,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:24:46,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:24:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:24:48,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 5849 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:24:48,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:24:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:50,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:24:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:24:54,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:24:54,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650440855] [2022-11-18 18:24:54,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:24:54,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659350603] [2022-11-18 18:24:54,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659350603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:24:54,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:24:54,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-18 18:24:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392963530] [2022-11-18 18:24:54,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:24:54,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 18:24:54,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:24:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 18:24:54,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:24:54,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 319 [2022-11-18 18:24:54,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 457 transitions, 2078 flow. Second operand has 61 states, 61 states have (on average 302.4918032786885) internal successors, (18452), 61 states have internal predecessors, (18452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:24:54,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:24:54,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 319 [2022-11-18 18:24:54,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:25:03,845 INFO L130 PetriNetUnfolder]: 257/7301 cut-off events. [2022-11-18 18:25:03,845 INFO L131 PetriNetUnfolder]: For 5629/5685 co-relation queries the response was YES. [2022-11-18 18:25:03,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11101 conditions, 7301 events. 257/7301 cut-off events. For 5629/5685 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 13806 event pairs, 15 based on Foata normal form. 44/7185 useless extension candidates. Maximal degree in co-relation 9350. Up to 196 conditions per place. [2022-11-18 18:25:03,869 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 66 selfloop transitions, 90 changer transitions 0/558 dead transitions. [2022-11-18 18:25:03,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 558 transitions, 3164 flow [2022-11-18 18:25:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 18:25:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-18 18:25:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 27171 transitions. [2022-11-18 18:25:03,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9463949843260188 [2022-11-18 18:25:03,904 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 27171 transitions. [2022-11-18 18:25:03,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 27171 transitions. [2022-11-18 18:25:03,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:25:03,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 27171 transitions. [2022-11-18 18:25:03,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 301.9) internal successors, (27171), 90 states have internal predecessors, (27171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:03,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 319.0) internal successors, (29029), 91 states have internal predecessors, (29029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:03,991 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 319.0) internal successors, (29029), 91 states have internal predecessors, (29029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:03,992 INFO L175 Difference]: Start difference. First operand has 412 places, 457 transitions, 2078 flow. Second operand 90 states and 27171 transitions. [2022-11-18 18:25:03,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 558 transitions, 3164 flow [2022-11-18 18:25:04,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 558 transitions, 3164 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:25:04,029 INFO L231 Difference]: Finished difference. Result has 517 places, 503 transitions, 2732 flow [2022-11-18 18:25:04,030 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=2732, PETRI_PLACES=517, PETRI_TRANSITIONS=503} [2022-11-18 18:25:04,030 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 208 predicate places. [2022-11-18 18:25:04,030 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 503 transitions, 2732 flow [2022-11-18 18:25:04,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 302.4918032786885) internal successors, (18452), 61 states have internal predecessors, (18452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:04,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:25:04,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:04,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:04,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:25:04,255 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:25:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash 477334670, now seen corresponding path program 2 times [2022-11-18 18:25:04,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:04,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290466509] [2022-11-18 18:25:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:04,818 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:25:04,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897296415] [2022-11-18 18:25:04,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:25:04,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:04,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:04,827 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:04,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:25:06,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:25:06,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:25:06,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:25:06,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:06,936 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 [2022-11-18 18:25:06,953 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 [2022-11-18 18:25:06,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:25:06,973 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 [2022-11-18 18:25:07,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:25:07,002 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 [2022-11-18 18:25:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-18 18:25:07,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:25:07,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290466509] [2022-11-18 18:25:07,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:25:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897296415] [2022-11-18 18:25:07,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897296415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:07,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:07,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:25:07,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998270615] [2022-11-18 18:25:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:07,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:25:07,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:25:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:25:07,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 319 [2022-11-18 18:25:07,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 503 transitions, 2732 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:07,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:25:07,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 319 [2022-11-18 18:25:07,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:25:26,567 INFO L130 PetriNetUnfolder]: 2129/11356 cut-off events. [2022-11-18 18:25:26,567 INFO L131 PetriNetUnfolder]: For 8127/8151 co-relation queries the response was YES. [2022-11-18 18:25:26,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24662 conditions, 11356 events. 2129/11356 cut-off events. For 8127/8151 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 46911 event pairs, 758 based on Foata normal form. 3/10876 useless extension candidates. Maximal degree in co-relation 19245. Up to 5538 conditions per place. [2022-11-18 18:25:26,633 INFO L137 encePairwiseOnDemand]: 308/319 looper letters, 306 selfloop transitions, 79 changer transitions 0/681 dead transitions. [2022-11-18 18:25:26,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 681 transitions, 4490 flow [2022-11-18 18:25:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:25:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:25:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1363 transitions. [2022-11-18 18:25:26,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2022-11-18 18:25:26,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1363 transitions. [2022-11-18 18:25:26,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1363 transitions. [2022-11-18 18:25:26,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:25:26,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1363 transitions. [2022-11-18 18:25:26,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:26,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:26,644 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:26,644 INFO L175 Difference]: Start difference. First operand has 517 places, 503 transitions, 2732 flow. Second operand 6 states and 1363 transitions. [2022-11-18 18:25:26,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 681 transitions, 4490 flow [2022-11-18 18:25:26,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 681 transitions, 4372 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-18 18:25:26,715 INFO L231 Difference]: Finished difference. Result has 485 places, 568 transitions, 3512 flow [2022-11-18 18:25:26,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3512, PETRI_PLACES=485, PETRI_TRANSITIONS=568} [2022-11-18 18:25:26,716 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 176 predicate places. [2022-11-18 18:25:26,716 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 568 transitions, 3512 flow [2022-11-18 18:25:26,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:26,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:25:26,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:26,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:26,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:25:26,933 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:25:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:26,934 INFO L85 PathProgramCache]: Analyzing trace with hash 460129341, now seen corresponding path program 1 times [2022-11-18 18:25:26,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:26,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417640868] [2022-11-18 18:25:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:26,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:27,395 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:25:27,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682092033] [2022-11-18 18:25:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:27,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:27,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:27,406 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:27,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:25:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:31,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 11395 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:25:31,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:25:36,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-18 18:25:43,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:43,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417640868] [2022-11-18 18:25:43,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:25:43,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682092033] [2022-11-18 18:25:43,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682092033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:25:43,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:25:43,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 18:25:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425462677] [2022-11-18 18:25:43,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:25:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:25:43,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:43,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:25:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:25:43,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 319 [2022-11-18 18:25:43,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 568 transitions, 3512 flow. Second operand has 8 states, 8 states have (on average 299.75) internal successors, (2398), 8 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:25:43,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:25:43,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 319 [2022-11-18 18:25:43,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:26:05,019 INFO L130 PetriNetUnfolder]: 374/10485 cut-off events. [2022-11-18 18:26:05,020 INFO L131 PetriNetUnfolder]: For 7109/7273 co-relation queries the response was YES. [2022-11-18 18:26:05,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16708 conditions, 10485 events. 374/10485 cut-off events. For 7109/7273 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 16852 event pairs, 15 based on Foata normal form. 62/10384 useless extension candidates. Maximal degree in co-relation 13555. Up to 271 conditions per place. [2022-11-18 18:26:05,052 INFO L137 encePairwiseOnDemand]: 313/319 looper letters, 22 selfloop transitions, 9 changer transitions 0/583 dead transitions. [2022-11-18 18:26:05,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 583 transitions, 3613 flow [2022-11-18 18:26:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:26:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:26:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2705 transitions. [2022-11-18 18:26:05,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9421804249390456 [2022-11-18 18:26:05,056 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2705 transitions. [2022-11-18 18:26:05,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2705 transitions. [2022-11-18 18:26:05,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:26:05,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2705 transitions. [2022-11-18 18:26:05,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 300.55555555555554) internal successors, (2705), 9 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:05,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:05,064 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:05,065 INFO L175 Difference]: Start difference. First operand has 485 places, 568 transitions, 3512 flow. Second operand 9 states and 2705 transitions. [2022-11-18 18:26:05,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 583 transitions, 3613 flow [2022-11-18 18:26:05,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 583 transitions, 3613 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:26:05,125 INFO L231 Difference]: Finished difference. Result has 496 places, 574 transitions, 3562 flow [2022-11-18 18:26:05,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3562, PETRI_PLACES=496, PETRI_TRANSITIONS=574} [2022-11-18 18:26:05,126 INFO L288 CegarLoopForPetriNet]: 309 programPoint places, 187 predicate places. [2022-11-18 18:26:05,127 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 574 transitions, 3562 flow [2022-11-18 18:26:05,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.75) internal successors, (2398), 8 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:05,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:26:05,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:05,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:05,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:26:05,346 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-11-18 18:26:05,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1403845935, now seen corresponding path program 2 times [2022-11-18 18:26:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:26:05,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273879922] [2022-11-18 18:26:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:26:06,815 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:26:06,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031507687] [2022-11-18 18:26:06,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:26:06,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:26:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:26:06,818 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:26:06,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_481c5898-6ee3-4534-9946-2d774ff7c010/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:26:12,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:26:12,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:26:12,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 18:26:12,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:12,552 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 [2022-11-18 18:26:12,560 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 [2022-11-18 18:26:12,580 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:26:12,581 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 [2022-11-18 18:26:12,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:26:12,606 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 [2022-11-18 18:26:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-18 18:26:12,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:26:12,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273879922] [2022-11-18 18:26:12,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:26:12,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031507687] [2022-11-18 18:26:12,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031507687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:12,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:12,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:26:12,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939099133] [2022-11-18 18:26:12,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:12,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:26:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:26:12,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:26:12,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:26:12,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 319 [2022-11-18 18:26:12,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 574 transitions, 3562 flow. Second operand has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:12,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:26:12,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 319 [2022-11-18 18:26:12,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand