./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a 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_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc --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 edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 --- 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-5e519f3 [2022-11-02 20:16:02,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:16:02,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:16:02,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:16:02,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:16:02,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:16:02,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:16:02,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:16:02,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:16:02,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:16:02,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:16:02,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:16:02,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:16:02,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:16:02,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:16:02,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:16:02,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:16:02,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:16:02,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:16:03,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:16:03,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:16:03,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:16:03,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:16:03,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:16:03,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:16:03,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:16:03,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:16:03,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:16:03,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:16:03,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:16:03,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:16:03,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:16:03,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:16:03,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:16:03,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:16:03,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:16:03,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:16:03,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:16:03,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:16:03,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:16:03,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:16:03,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:16:03,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:16:03,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:16:03,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:16:03,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:16:03,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:16:03,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:16:03,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:16:03,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:16:03,083 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:16:03,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:16:03,085 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:16:03,085 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:16:03,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:16:03,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:16:03,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:16:03,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:16:03,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:16:03,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:16:03,087 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:16:03,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:16:03,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:16:03,088 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:16:03,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:16:03,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:16:03,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:16:03,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:16:03,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:16:03,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:16:03,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:16:03,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:16:03,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:16:03,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:16:03,100 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:16:03,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:16:03,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:16:03,101 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_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edbdacd2fc511db63719a3e7d2bd257b6310a833f5bcfcddcb6829e714260082 [2022-11-02 20:16:03,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:16:03,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:16:03,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:16:03,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:16:03,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:16:03,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-11-02 20:16:03,539 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/data/ac586c6d2/51ba0ae45b5a4534a23e89a465a57801/FLAG7d7d74a7c [2022-11-02 20:16:04,125 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:16:04,126 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/sv-benchmarks/c/goblint-regression/09-regions_23-evilcollapse_rc.i [2022-11-02 20:16:04,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/data/ac586c6d2/51ba0ae45b5a4534a23e89a465a57801/FLAG7d7d74a7c [2022-11-02 20:16:04,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/data/ac586c6d2/51ba0ae45b5a4534a23e89a465a57801 [2022-11-02 20:16:04,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:16:04,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:16:04,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:04,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:16:04,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:16:04,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:04" (1/1) ... [2022-11-02 20:16:04,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230830e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:04, skipping insertion in model container [2022-11-02 20:16:04,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:04" (1/1) ... [2022-11-02 20:16:04,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:16:04,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:16:05,059 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,060 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,061 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,063 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:05,121 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:16:05,154 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,155 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,156 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,157 WARN L1543 CHandler]: Possible shadowing of function new [2022-11-02 20:16:05,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:05,230 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:16:05,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05 WrapperNode [2022-11-02 20:16:05,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:05,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:05,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:16:05,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:16:05,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,293 INFO L138 Inliner]: procedures = 272, calls = 38, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 268 [2022-11-02 20:16:05,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:05,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:16:05,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:16:05,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:16:05,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,366 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:16:05,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:16:05,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:16:05,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:16:05,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (1/1) ... [2022-11-02 20:16:05,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:16:05,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:05,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:16:05,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:16:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-02 20:16:05,503 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-02 20:16:05,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:16:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:16:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:16:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:16:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:16:05,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:16:05,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:16:05,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:16:05,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:16:05,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:16:05,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:16:05,507 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:16:05,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:16:05,777 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:16:06,336 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:16:06,347 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:16:06,347 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:16:06,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:06 BoogieIcfgContainer [2022-11-02 20:16:06,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:16:06,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:16:06,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:16:06,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:16:06,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:16:04" (1/3) ... [2022-11-02 20:16:06,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740b3e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:06, skipping insertion in model container [2022-11-02 20:16:06,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:05" (2/3) ... [2022-11-02 20:16:06,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740b3e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:06, skipping insertion in model container [2022-11-02 20:16:06,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:06" (3/3) ... [2022-11-02 20:16:06,360 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_23-evilcollapse_rc.i [2022-11-02 20:16:06,369 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:16:06,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:16:06,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-02 20:16:06,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:16:06,580 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:16:06,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 386 transitions, 782 flow [2022-11-02 20:16:06,764 INFO L130 PetriNetUnfolder]: 16/384 cut-off events. [2022-11-02 20:16:06,765 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:16:06,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 384 events. 16/384 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 683 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 307. Up to 2 conditions per place. [2022-11-02 20:16:06,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 386 transitions, 782 flow [2022-11-02 20:16:06,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 384 transitions, 774 flow [2022-11-02 20:16:06,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:16:06,820 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;@51c574bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:16:06,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-11-02 20:16:06,832 INFO L130 PetriNetUnfolder]: 1/41 cut-off events. [2022-11-02 20:16:06,832 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:16:06,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:06,833 INFO L208 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] [2022-11-02 20:16:06,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:06,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1493687603, now seen corresponding path program 1 times [2022-11-02 20:16:06,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:06,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298673099] [2022-11-02 20:16:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:06,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:07,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:07,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298673099] [2022-11-02 20:16:07,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298673099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:07,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:07,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855551637] [2022-11-02 20:16:07,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:07,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:07,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:07,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:07,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:07,916 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-11-02 20:16:07,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 384 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:07,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:07,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-11-02 20:16:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:09,200 INFO L130 PetriNetUnfolder]: 744/2697 cut-off events. [2022-11-02 20:16:09,201 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-02 20:16:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 2697 events. 744/2697 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16946 event pairs, 600 based on Foata normal form. 249/2569 useless extension candidates. Maximal degree in co-relation 3898. Up to 1463 conditions per place. [2022-11-02 20:16:09,234 INFO L137 encePairwiseOnDemand]: 364/386 looper letters, 134 selfloop transitions, 10 changer transitions 2/372 dead transitions. [2022-11-02 20:16:09,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 372 transitions, 1038 flow [2022-11-02 20:16:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1536 transitions. [2022-11-02 20:16:09,262 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6632124352331606 [2022-11-02 20:16:09,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1536 transitions. [2022-11-02 20:16:09,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1536 transitions. [2022-11-02 20:16:09,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:09,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1536 transitions. [2022-11-02 20:16:09,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:09,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:09,299 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:09,302 INFO L175 Difference]: Start difference. First operand has 375 places, 384 transitions, 774 flow. Second operand 6 states and 1536 transitions. [2022-11-02 20:16:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 372 transitions, 1038 flow [2022-11-02 20:16:09,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 372 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:16:09,325 INFO L231 Difference]: Finished difference. Result has 376 places, 370 transitions, 764 flow [2022-11-02 20:16:09,328 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=376, PETRI_TRANSITIONS=370} [2022-11-02 20:16:09,335 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-11-02 20:16:09,336 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 370 transitions, 764 flow [2022-11-02 20:16:09,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:09,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:09,338 INFO L208 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] [2022-11-02 20:16:09,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:16:09,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1374841415, now seen corresponding path program 1 times [2022-11-02 20:16:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:09,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523359367] [2022-11-02 20:16:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:09,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:09,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523359367] [2022-11-02 20:16:09,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523359367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:09,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:09,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:09,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884758569] [2022-11-02 20:16:09,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:09,898 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 386 [2022-11-02 20:16:09,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 370 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:09,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:09,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 386 [2022-11-02 20:16:09,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:10,992 INFO L130 PetriNetUnfolder]: 744/2693 cut-off events. [2022-11-02 20:16:10,993 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:16:11,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4228 conditions, 2693 events. 744/2693 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16921 event pairs, 600 based on Foata normal form. 0/2320 useless extension candidates. Maximal degree in co-relation 4032. Up to 1461 conditions per place. [2022-11-02 20:16:11,017 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 132 selfloop transitions, 10 changer transitions 0/368 dead transitions. [2022-11-02 20:16:11,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 368 transitions, 1044 flow [2022-11-02 20:16:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2022-11-02 20:16:11,022 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6580310880829016 [2022-11-02 20:16:11,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1524 transitions. [2022-11-02 20:16:11,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1524 transitions. [2022-11-02 20:16:11,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:11,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1524 transitions. [2022-11-02 20:16:11,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,035 INFO L175 Difference]: Start difference. First operand has 376 places, 370 transitions, 764 flow. Second operand 6 states and 1524 transitions. [2022-11-02 20:16:11,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 368 transitions, 1044 flow [2022-11-02 20:16:11,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 368 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:11,105 INFO L231 Difference]: Finished difference. Result has 372 places, 368 transitions, 760 flow [2022-11-02 20:16:11,106 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=372, PETRI_TRANSITIONS=368} [2022-11-02 20:16:11,110 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -3 predicate places. [2022-11-02 20:16:11,110 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 368 transitions, 760 flow [2022-11-02 20:16:11,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.5) internal successors, (1395), 6 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:11,111 INFO L208 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] [2022-11-02 20:16:11,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:16:11,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1321628424, now seen corresponding path program 1 times [2022-11-02 20:16:11,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:11,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059646808] [2022-11-02 20:16:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:11,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:11,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059646808] [2022-11-02 20:16:11,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059646808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:11,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:11,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:16:11,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662900839] [2022-11-02 20:16:11,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:11,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:16:11,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:16:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:16:11,181 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 386 [2022-11-02 20:16:11,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 368 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:11,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 386 [2022-11-02 20:16:11,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:11,278 INFO L130 PetriNetUnfolder]: 7/492 cut-off events. [2022-11-02 20:16:11,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:16:11,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 492 events. 7/492 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1078 event pairs, 0 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 293. Up to 13 conditions per place. [2022-11-02 20:16:11,282 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 17 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2022-11-02 20:16:11,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 375 transitions, 812 flow [2022-11-02 20:16:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:16:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:16:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1112 transitions. [2022-11-02 20:16:11,286 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9602763385146805 [2022-11-02 20:16:11,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1112 transitions. [2022-11-02 20:16:11,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1112 transitions. [2022-11-02 20:16:11,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:11,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1112 transitions. [2022-11-02 20:16:11,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.6666666666667) internal successors, (1112), 3 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,295 INFO L175 Difference]: Start difference. First operand has 372 places, 368 transitions, 760 flow. Second operand 3 states and 1112 transitions. [2022-11-02 20:16:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 375 transitions, 812 flow [2022-11-02 20:16:11,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 375 transitions, 792 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:11,310 INFO L231 Difference]: Finished difference. Result has 370 places, 369 transitions, 752 flow [2022-11-02 20:16:11,310 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=752, PETRI_PLACES=370, PETRI_TRANSITIONS=369} [2022-11-02 20:16:11,311 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -5 predicate places. [2022-11-02 20:16:11,311 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 369 transitions, 752 flow [2022-11-02 20:16:11,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:11,313 INFO L208 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] [2022-11-02 20:16:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:16:11,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2125069049, now seen corresponding path program 1 times [2022-11-02 20:16:11,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:11,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348152726] [2022-11-02 20:16:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:11,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:11,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454262374] [2022-11-02 20:16:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:11,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:11,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:11,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:11,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:16:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:11,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:16:11,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:11,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:11,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:11,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:11,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:11,697 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:11,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:11,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:11,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:11,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:16:11,766 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:11,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:11,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:11,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:11,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348152726] [2022-11-02 20:16:11,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:11,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454262374] [2022-11-02 20:16:11,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454262374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:11,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:11,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:16:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402143748] [2022-11-02 20:16:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:11,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:16:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:16:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:16:11,822 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 386 [2022-11-02 20:16:11,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 369 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:11,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:11,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 386 [2022-11-02 20:16:11,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:14,015 INFO L130 PetriNetUnfolder]: 1489/5407 cut-off events. [2022-11-02 20:16:14,015 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:16:14,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 5407 events. 1489/5407 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 35503 event pairs, 1200 based on Foata normal form. 0/4667 useless extension candidates. Maximal degree in co-relation 4205. Up to 1504 conditions per place. [2022-11-02 20:16:14,064 INFO L137 encePairwiseOnDemand]: 376/386 looper letters, 214 selfloop transitions, 9 changer transitions 0/453 dead transitions. [2022-11-02 20:16:14,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 453 transitions, 1370 flow [2022-11-02 20:16:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:16:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:16:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2321 transitions. [2022-11-02 20:16:14,070 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6681059297639609 [2022-11-02 20:16:14,070 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2321 transitions. [2022-11-02 20:16:14,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2321 transitions. [2022-11-02 20:16:14,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:14,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2321 transitions. [2022-11-02 20:16:14,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.8888888888889) internal successors, (2321), 9 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,089 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,090 INFO L175 Difference]: Start difference. First operand has 370 places, 369 transitions, 752 flow. Second operand 9 states and 2321 transitions. [2022-11-02 20:16:14,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 453 transitions, 1370 flow [2022-11-02 20:16:14,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 453 transitions, 1368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:14,100 INFO L231 Difference]: Finished difference. Result has 377 places, 369 transitions, 774 flow [2022-11-02 20:16:14,101 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=774, PETRI_PLACES=377, PETRI_TRANSITIONS=369} [2022-11-02 20:16:14,103 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 2 predicate places. [2022-11-02 20:16:14,103 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 369 transitions, 774 flow [2022-11-02 20:16:14,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 235.625) internal successors, (1885), 8 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:14,104 INFO L208 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] [2022-11-02 20:16:14,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:14,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1402626691, now seen corresponding path program 1 times [2022-11-02 20:16:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741844410] [2022-11-02 20:16:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:14,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:14,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741844410] [2022-11-02 20:16:14,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741844410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:14,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:14,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:16:14,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083850092] [2022-11-02 20:16:14,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:14,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:16:14,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:16:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:16:14,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 386 [2022-11-02 20:16:14,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 369 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:14,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 386 [2022-11-02 20:16:14,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:14,508 INFO L130 PetriNetUnfolder]: 7/680 cut-off events. [2022-11-02 20:16:14,508 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:16:14,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 680 events. 7/680 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1156 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 357. Up to 16 conditions per place. [2022-11-02 20:16:14,513 INFO L137 encePairwiseOnDemand]: 383/386 looper letters, 11 selfloop transitions, 2 changer transitions 0/373 dead transitions. [2022-11-02 20:16:14,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 373 transitions, 808 flow [2022-11-02 20:16:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:16:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:16:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2022-11-02 20:16:14,516 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9628670120898101 [2022-11-02 20:16:14,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2022-11-02 20:16:14,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2022-11-02 20:16:14,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:14,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2022-11-02 20:16:14,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,522 INFO L175 Difference]: Start difference. First operand has 377 places, 369 transitions, 774 flow. Second operand 3 states and 1115 transitions. [2022-11-02 20:16:14,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 373 transitions, 808 flow [2022-11-02 20:16:14,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 373 transitions, 794 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-02 20:16:14,531 INFO L231 Difference]: Finished difference. Result has 373 places, 370 transitions, 772 flow [2022-11-02 20:16:14,531 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=373, PETRI_TRANSITIONS=370} [2022-11-02 20:16:14,532 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -2 predicate places. [2022-11-02 20:16:14,532 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 370 transitions, 772 flow [2022-11-02 20:16:14,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:14,534 INFO L208 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] [2022-11-02 20:16:14,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:16:14,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1785682785, now seen corresponding path program 1 times [2022-11-02 20:16:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:14,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180984286] [2022-11-02 20:16:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:14,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:14,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944769427] [2022-11-02 20:16:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:14,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:14,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:14,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:14,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:16:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:14,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:14,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:14,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:14,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:14,796 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:14,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:14,840 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:14,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:14,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:14,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:14,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180984286] [2022-11-02 20:16:14,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:14,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944769427] [2022-11-02 20:16:14,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944769427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:14,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:14,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008287543] [2022-11-02 20:16:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:14,877 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 386 [2022-11-02 20:16:14,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 370 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:14,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:14,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 386 [2022-11-02 20:16:14,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:16,250 INFO L130 PetriNetUnfolder]: 745/3001 cut-off events. [2022-11-02 20:16:16,251 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:16:16,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 3001 events. 745/3001 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18195 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4194. Up to 1599 conditions per place. [2022-11-02 20:16:16,274 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/369 dead transitions. [2022-11-02 20:16:16,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 369 transitions, 1036 flow [2022-11-02 20:16:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1556 transitions. [2022-11-02 20:16:16,278 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6718480138169257 [2022-11-02 20:16:16,278 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1556 transitions. [2022-11-02 20:16:16,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1556 transitions. [2022-11-02 20:16:16,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:16,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1556 transitions. [2022-11-02 20:16:16,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:16,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:16,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:16,289 INFO L175 Difference]: Start difference. First operand has 373 places, 370 transitions, 772 flow. Second operand 6 states and 1556 transitions. [2022-11-02 20:16:16,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 369 transitions, 1036 flow [2022-11-02 20:16:16,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 369 transitions, 1034 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:16,296 INFO L231 Difference]: Finished difference. Result has 376 places, 369 transitions, 778 flow [2022-11-02 20:16:16,297 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=376, PETRI_TRANSITIONS=369} [2022-11-02 20:16:16,298 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 1 predicate places. [2022-11-02 20:16:16,298 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 369 transitions, 778 flow [2022-11-02 20:16:16,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:16,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:16,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:16,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:16,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash -255996463, now seen corresponding path program 1 times [2022-11-02 20:16:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:16,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493922633] [2022-11-02 20:16:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:16,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:16,554 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:16,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869688266] [2022-11-02 20:16:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:16,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:16,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:16,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:16,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:16:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:16,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:16,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:16,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:16,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:16,812 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:16,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:16,857 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:16,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:16,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493922633] [2022-11-02 20:16:16,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869688266] [2022-11-02 20:16:16,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869688266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:16,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:16,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:16,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841310104] [2022-11-02 20:16:16,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:16,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:16,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:16,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:16,890 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 386 [2022-11-02 20:16:16,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 369 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:16,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:16,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 386 [2022-11-02 20:16:16,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:17,781 INFO L130 PetriNetUnfolder]: 745/2997 cut-off events. [2022-11-02 20:16:17,781 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:16:17,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2997 events. 745/2997 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18148 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4243. Up to 1599 conditions per place. [2022-11-02 20:16:17,808 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/368 dead transitions. [2022-11-02 20:16:17,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 368 transitions, 1042 flow [2022-11-02 20:16:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:17,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1550 transitions. [2022-11-02 20:16:17,813 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6692573402417962 [2022-11-02 20:16:17,813 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1550 transitions. [2022-11-02 20:16:17,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1550 transitions. [2022-11-02 20:16:17,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:17,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1550 transitions. [2022-11-02 20:16:17,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.3333333333333) internal successors, (1550), 6 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,823 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,823 INFO L175 Difference]: Start difference. First operand has 376 places, 369 transitions, 778 flow. Second operand 6 states and 1550 transitions. [2022-11-02 20:16:17,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 368 transitions, 1042 flow [2022-11-02 20:16:17,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 368 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:17,921 INFO L231 Difference]: Finished difference. Result has 375 places, 368 transitions, 776 flow [2022-11-02 20:16:17,922 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=776, PETRI_PLACES=375, PETRI_TRANSITIONS=368} [2022-11-02 20:16:17,922 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 0 predicate places. [2022-11-02 20:16:17,922 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 368 transitions, 776 flow [2022-11-02 20:16:17,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:17,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:17,923 INFO L208 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] [2022-11-02 20:16:17,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:18,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:16:18,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:18,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash 439730996, now seen corresponding path program 1 times [2022-11-02 20:16:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:18,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440053995] [2022-11-02 20:16:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:18,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:18,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246214622] [2022-11-02 20:16:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:18,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:18,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:18,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:18,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:16:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:18,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:18,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:18,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:18,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:18,467 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:18,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:18,492 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:18,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:18,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:18,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:18,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440053995] [2022-11-02 20:16:18,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:18,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246214622] [2022-11-02 20:16:18,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246214622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:18,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:18,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:18,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916591243] [2022-11-02 20:16:18,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:18,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:18,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:18,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:18,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:18,519 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 386 [2022-11-02 20:16:18,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 368 transitions, 776 flow. Second operand has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:18,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:18,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 386 [2022-11-02 20:16:18,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:19,803 INFO L130 PetriNetUnfolder]: 745/2993 cut-off events. [2022-11-02 20:16:19,803 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:16:19,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2993 events. 745/2993 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18108 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4267. Up to 1603 conditions per place. [2022-11-02 20:16:19,846 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 129 selfloop transitions, 5 changer transitions 0/367 dead transitions. [2022-11-02 20:16:19,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 367 transitions, 1042 flow [2022-11-02 20:16:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:19,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1539 transitions. [2022-11-02 20:16:19,851 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6645077720207254 [2022-11-02 20:16:19,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1539 transitions. [2022-11-02 20:16:19,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1539 transitions. [2022-11-02 20:16:19,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:19,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1539 transitions. [2022-11-02 20:16:19,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.5) internal successors, (1539), 6 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:19,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:19,879 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:19,879 INFO L175 Difference]: Start difference. First operand has 375 places, 368 transitions, 776 flow. Second operand 6 states and 1539 transitions. [2022-11-02 20:16:19,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 367 transitions, 1042 flow [2022-11-02 20:16:19,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 367 transitions, 1032 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:19,888 INFO L231 Difference]: Finished difference. Result has 374 places, 367 transitions, 774 flow [2022-11-02 20:16:19,889 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=374, PETRI_TRANSITIONS=367} [2022-11-02 20:16:19,892 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -1 predicate places. [2022-11-02 20:16:19,892 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 367 transitions, 774 flow [2022-11-02 20:16:19,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:19,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:19,893 INFO L208 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] [2022-11-02 20:16:19,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:20,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:20,118 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1029613211, now seen corresponding path program 1 times [2022-11-02 20:16:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:20,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852865996] [2022-11-02 20:16:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:20,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:20,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781126173] [2022-11-02 20:16:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:20,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:20,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:20,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:20,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:16:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:20,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:20,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:20,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:20,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:20,460 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:20,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:20,487 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:20,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:20,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:20,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:20,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852865996] [2022-11-02 20:16:20,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:20,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781126173] [2022-11-02 20:16:20,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781126173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:20,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:20,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:20,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955107895] [2022-11-02 20:16:20,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:20,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:20,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:20,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:20,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:20,515 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 386 [2022-11-02 20:16:20,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 367 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:20,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:20,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 386 [2022-11-02 20:16:20,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:21,426 INFO L130 PetriNetUnfolder]: 745/2989 cut-off events. [2022-11-02 20:16:21,426 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:16:21,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4713 conditions, 2989 events. 745/2989 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18107 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4279. Up to 1599 conditions per place. [2022-11-02 20:16:21,448 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 128 selfloop transitions, 5 changer transitions 0/366 dead transitions. [2022-11-02 20:16:21,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 366 transitions, 1038 flow [2022-11-02 20:16:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1538 transitions. [2022-11-02 20:16:21,453 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6640759930915371 [2022-11-02 20:16:21,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1538 transitions. [2022-11-02 20:16:21,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1538 transitions. [2022-11-02 20:16:21,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:21,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1538 transitions. [2022-11-02 20:16:21,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 256.3333333333333) internal successors, (1538), 6 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:21,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:21,463 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:21,464 INFO L175 Difference]: Start difference. First operand has 374 places, 367 transitions, 774 flow. Second operand 6 states and 1538 transitions. [2022-11-02 20:16:21,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 366 transitions, 1038 flow [2022-11-02 20:16:21,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 366 transitions, 1028 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:21,471 INFO L231 Difference]: Finished difference. Result has 373 places, 366 transitions, 772 flow [2022-11-02 20:16:21,473 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=373, PETRI_TRANSITIONS=366} [2022-11-02 20:16:21,474 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -2 predicate places. [2022-11-02 20:16:21,474 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 366 transitions, 772 flow [2022-11-02 20:16:21,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:21,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:21,475 INFO L208 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] [2022-11-02 20:16:21,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:21,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:21,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2141761406, now seen corresponding path program 1 times [2022-11-02 20:16:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:21,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103010935] [2022-11-02 20:16:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:21,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:21,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514328473] [2022-11-02 20:16:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:21,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:21,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:21,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:21,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:16:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:21,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:21,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:22,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:22,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:22,050 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:22,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:22,078 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:22,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:22,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103010935] [2022-11-02 20:16:22,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:22,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514328473] [2022-11-02 20:16:22,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514328473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:22,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:22,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321567730] [2022-11-02 20:16:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:22,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:22,108 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 386 [2022-11-02 20:16:22,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 366 transitions, 772 flow. Second operand has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:22,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:22,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 386 [2022-11-02 20:16:22,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:22,985 INFO L130 PetriNetUnfolder]: 745/2985 cut-off events. [2022-11-02 20:16:22,985 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:16:22,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 2985 events. 745/2985 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18043 event pairs, 600 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 4289. Up to 1591 conditions per place. [2022-11-02 20:16:23,003 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 126 selfloop transitions, 5 changer transitions 0/365 dead transitions. [2022-11-02 20:16:23,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 365 transitions, 1032 flow [2022-11-02 20:16:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1542 transitions. [2022-11-02 20:16:23,008 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6658031088082902 [2022-11-02 20:16:23,008 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1542 transitions. [2022-11-02 20:16:23,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1542 transitions. [2022-11-02 20:16:23,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:23,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1542 transitions. [2022-11-02 20:16:23,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.0) internal successors, (1542), 6 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:23,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:23,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:23,018 INFO L175 Difference]: Start difference. First operand has 373 places, 366 transitions, 772 flow. Second operand 6 states and 1542 transitions. [2022-11-02 20:16:23,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 365 transitions, 1032 flow [2022-11-02 20:16:23,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 365 transitions, 1022 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:23,025 INFO L231 Difference]: Finished difference. Result has 372 places, 365 transitions, 770 flow [2022-11-02 20:16:23,026 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=770, PETRI_PLACES=372, PETRI_TRANSITIONS=365} [2022-11-02 20:16:23,027 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, -3 predicate places. [2022-11-02 20:16:23,027 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 365 transitions, 770 flow [2022-11-02 20:16:23,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.33333333333334) internal successors, (1466), 6 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:23,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:23,028 INFO L208 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] [2022-11-02 20:16:23,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:23,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:16:23,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:23,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash 839344870, now seen corresponding path program 1 times [2022-11-02 20:16:23,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:23,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609592620] [2022-11-02 20:16:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:23,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:23,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579699726] [2022-11-02 20:16:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:23,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:23,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:23,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:23,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:16:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:23,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:16:23,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:23,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:23,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:23,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609592620] [2022-11-02 20:16:23,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:23,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579699726] [2022-11-02 20:16:23,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579699726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:23,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:23,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:16:23,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453682999] [2022-11-02 20:16:23,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:23,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:16:23,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:16:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:16:23,903 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-02 20:16:23,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 365 transitions, 770 flow. Second operand has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:23,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:23,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-02 20:16:23,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:24,113 INFO L130 PetriNetUnfolder]: 7/846 cut-off events. [2022-11-02 20:16:24,113 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:16:24,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 846 events. 7/846 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 686 event pairs, 0 based on Foata normal form. 4/832 useless extension candidates. Maximal degree in co-relation 363. Up to 13 conditions per place. [2022-11-02 20:16:24,117 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 12 selfloop transitions, 9 changer transitions 0/375 dead transitions. [2022-11-02 20:16:24,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 375 transitions, 834 flow [2022-11-02 20:16:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:16:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:16:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3317 transitions. [2022-11-02 20:16:24,125 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9548071387449626 [2022-11-02 20:16:24,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3317 transitions. [2022-11-02 20:16:24,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3317 transitions. [2022-11-02 20:16:24,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:24,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3317 transitions. [2022-11-02 20:16:24,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 368.55555555555554) internal successors, (3317), 9 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:24,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:24,141 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:24,142 INFO L175 Difference]: Start difference. First operand has 372 places, 365 transitions, 770 flow. Second operand 9 states and 3317 transitions. [2022-11-02 20:16:24,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 375 transitions, 834 flow [2022-11-02 20:16:24,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 375 transitions, 824 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:24,150 INFO L231 Difference]: Finished difference. Result has 378 places, 371 transitions, 810 flow [2022-11-02 20:16:24,150 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=810, PETRI_PLACES=378, PETRI_TRANSITIONS=371} [2022-11-02 20:16:24,151 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 3 predicate places. [2022-11-02 20:16:24,151 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 371 transitions, 810 flow [2022-11-02 20:16:24,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 367.875) internal successors, (2943), 8 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:24,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:24,153 INFO L208 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] [2022-11-02 20:16:24,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:24,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:16:24,367 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1951053958, now seen corresponding path program 2 times [2022-11-02 20:16:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:24,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145870963] [2022-11-02 20:16:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:24,573 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:24,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330216741] [2022-11-02 20:16:24,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:16:24,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:24,575 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:24,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:16:24,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:16:24,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:24,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:24,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:24,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:24,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:24,976 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:24,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:25,006 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:25,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-11-02 20:16:25,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:25,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145870963] [2022-11-02 20:16:25,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:25,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330216741] [2022-11-02 20:16:25,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330216741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:25,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:25,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:25,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994703109] [2022-11-02 20:16:25,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:25,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:25,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:25,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:25,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:25,040 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-02 20:16:25,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 371 transitions, 810 flow. Second operand has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:25,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:25,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-02 20:16:25,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:26,281 INFO L130 PetriNetUnfolder]: 1039/3441 cut-off events. [2022-11-02 20:16:26,281 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:16:26,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 3441 events. 1039/3441 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19244 event pairs, 870 based on Foata normal form. 0/3017 useless extension candidates. Maximal degree in co-relation 5183. Up to 2233 conditions per place. [2022-11-02 20:16:26,303 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 136 selfloop transitions, 10 changer transitions 0/369 dead transitions. [2022-11-02 20:16:26,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 369 transitions, 1098 flow [2022-11-02 20:16:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:26,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1456 transitions. [2022-11-02 20:16:26,308 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6286701208981001 [2022-11-02 20:16:26,308 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1456 transitions. [2022-11-02 20:16:26,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1456 transitions. [2022-11-02 20:16:26,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:26,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1456 transitions. [2022-11-02 20:16:26,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:26,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:26,318 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:26,318 INFO L175 Difference]: Start difference. First operand has 378 places, 371 transitions, 810 flow. Second operand 6 states and 1456 transitions. [2022-11-02 20:16:26,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 369 transitions, 1098 flow [2022-11-02 20:16:26,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 369 transitions, 1092 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:26,329 INFO L231 Difference]: Finished difference. Result has 380 places, 369 transitions, 820 flow [2022-11-02 20:16:26,329 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=820, PETRI_PLACES=380, PETRI_TRANSITIONS=369} [2022-11-02 20:16:26,330 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 5 predicate places. [2022-11-02 20:16:26,331 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 369 transitions, 820 flow [2022-11-02 20:16:26,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 228.83333333333334) internal successors, (1373), 6 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:26,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:26,332 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:26,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:26,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:16:26,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:26,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash -245474544, now seen corresponding path program 1 times [2022-11-02 20:16:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:26,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559515103] [2022-11-02 20:16:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:26,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:26,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:26,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076477877] [2022-11-02 20:16:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:26,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:26,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:26,803 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:26,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:16:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:27,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:16:27,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:27,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:28,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:28,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559515103] [2022-11-02 20:16:28,254 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:28,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076477877] [2022-11-02 20:16:28,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076477877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:28,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:28,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:16:28,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960138126] [2022-11-02 20:16:28,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:28,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:16:28,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:16:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:16:28,263 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-02 20:16:28,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 369 transitions, 820 flow. Second operand has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:28,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:28,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-02 20:16:28,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:28,950 INFO L130 PetriNetUnfolder]: 7/1572 cut-off events. [2022-11-02 20:16:28,951 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-02 20:16:28,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 1572 events. 7/1572 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 686 event pairs, 0 based on Foata normal form. 8/1564 useless extension candidates. Maximal degree in co-relation 1594. Up to 29 conditions per place. [2022-11-02 20:16:28,955 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 20 selfloop transitions, 21 changer transitions 0/393 dead transitions. [2022-11-02 20:16:28,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 393 transitions, 1002 flow [2022-11-02 20:16:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:16:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:16:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7731 transitions. [2022-11-02 20:16:28,970 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9537379718726869 [2022-11-02 20:16:28,970 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7731 transitions. [2022-11-02 20:16:28,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7731 transitions. [2022-11-02 20:16:28,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:28,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7731 transitions. [2022-11-02 20:16:28,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 368.14285714285717) internal successors, (7731), 21 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:28,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,001 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 386.0) internal successors, (8492), 22 states have internal predecessors, (8492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,001 INFO L175 Difference]: Start difference. First operand has 380 places, 369 transitions, 820 flow. Second operand 21 states and 7731 transitions. [2022-11-02 20:16:29,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 393 transitions, 1002 flow [2022-11-02 20:16:29,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 393 transitions, 982 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:29,009 INFO L231 Difference]: Finished difference. Result has 400 places, 382 transitions, 930 flow [2022-11-02 20:16:29,010 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=930, PETRI_PLACES=400, PETRI_TRANSITIONS=382} [2022-11-02 20:16:29,011 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 25 predicate places. [2022-11-02 20:16:29,011 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 382 transitions, 930 flow [2022-11-02 20:16:29,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 368.1875) internal successors, (5891), 16 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:29,013 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:29,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:29,235 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:29,235 INFO L85 PathProgramCache]: Analyzing trace with hash -238698544, now seen corresponding path program 2 times [2022-11-02 20:16:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:29,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141236734] [2022-11-02 20:16:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:29,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:29,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:29,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144102683] [2022-11-02 20:16:29,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:16:29,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:29,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:29,363 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:29,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:16:29,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:16:29,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:29,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:29,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:29,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:29,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:29,930 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:29,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:29,952 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:29,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-11-02 20:16:29,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:29,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:29,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141236734] [2022-11-02 20:16:29,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:29,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144102683] [2022-11-02 20:16:29,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144102683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:29,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:29,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725199628] [2022-11-02 20:16:29,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:29,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:29,982 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 386 [2022-11-02 20:16:29,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 382 transitions, 930 flow. Second operand has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:29,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:29,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 386 [2022-11-02 20:16:29,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:32,114 INFO L130 PetriNetUnfolder]: 745/3896 cut-off events. [2022-11-02 20:16:32,114 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2022-11-02 20:16:32,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 3896 events. 745/3896 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17711 event pairs, 600 based on Foata normal form. 0/3534 useless extension candidates. Maximal degree in co-relation 4908. Up to 1979 conditions per place. [2022-11-02 20:16:32,139 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 120 selfloop transitions, 5 changer transitions 0/381 dead transitions. [2022-11-02 20:16:32,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 381 transitions, 1178 flow [2022-11-02 20:16:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1554 transitions. [2022-11-02 20:16:32,144 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6709844559585493 [2022-11-02 20:16:32,144 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1554 transitions. [2022-11-02 20:16:32,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1554 transitions. [2022-11-02 20:16:32,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:32,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1554 transitions. [2022-11-02 20:16:32,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:32,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:32,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:32,155 INFO L175 Difference]: Start difference. First operand has 400 places, 382 transitions, 930 flow. Second operand 6 states and 1554 transitions. [2022-11-02 20:16:32,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 381 transitions, 1178 flow [2022-11-02 20:16:32,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 381 transitions, 1154 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-02 20:16:32,166 INFO L231 Difference]: Finished difference. Result has 398 places, 381 transitions, 914 flow [2022-11-02 20:16:32,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=914, PETRI_PLACES=398, PETRI_TRANSITIONS=381} [2022-11-02 20:16:32,167 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 23 predicate places. [2022-11-02 20:16:32,167 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 381 transitions, 914 flow [2022-11-02 20:16:32,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 249.5) internal successors, (1497), 6 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:32,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:32,169 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:32,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:32,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:32,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash -890013826, now seen corresponding path program 1 times [2022-11-02 20:16:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:32,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203323141] [2022-11-02 20:16:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:32,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:32,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810533897] [2022-11-02 20:16:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:32,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:32,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:32,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:32,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:16:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:33,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:16:33,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:34,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:35,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:35,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203323141] [2022-11-02 20:16:35,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:35,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810533897] [2022-11-02 20:16:35,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810533897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:35,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:35,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-02 20:16:35,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553715600] [2022-11-02 20:16:35,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:35,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:16:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:35,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:16:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:16:35,993 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-02 20:16:36,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 381 transitions, 914 flow. Second operand has 32 states, 32 states have (on average 368.34375) internal successors, (11787), 32 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:36,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:36,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-02 20:16:36,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:38,471 INFO L130 PetriNetUnfolder]: 7/3027 cut-off events. [2022-11-02 20:16:38,471 INFO L131 PetriNetUnfolder]: For 566/566 co-relation queries the response was YES. [2022-11-02 20:16:38,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 3027 events. 7/3027 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 680 event pairs, 0 based on Foata normal form. 16/3028 useless extension candidates. Maximal degree in co-relation 3461. Up to 61 conditions per place. [2022-11-02 20:16:38,481 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 36 selfloop transitions, 45 changer transitions 0/432 dead transitions. [2022-11-02 20:16:38,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 432 transitions, 1376 flow [2022-11-02 20:16:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-02 20:16:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-02 20:16:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 16559 transitions. [2022-11-02 20:16:38,507 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9533103051237767 [2022-11-02 20:16:38,507 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 16559 transitions. [2022-11-02 20:16:38,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 16559 transitions. [2022-11-02 20:16:38,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:38,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 16559 transitions. [2022-11-02 20:16:38,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 367.97777777777776) internal successors, (16559), 45 states have internal predecessors, (16559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:38,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 386.0) internal successors, (17756), 46 states have internal predecessors, (17756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:38,576 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 386.0) internal successors, (17756), 46 states have internal predecessors, (17756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:38,576 INFO L175 Difference]: Start difference. First operand has 398 places, 381 transitions, 914 flow. Second operand 45 states and 16559 transitions. [2022-11-02 20:16:38,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 432 transitions, 1376 flow [2022-11-02 20:16:38,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 432 transitions, 1366 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:16:38,589 INFO L231 Difference]: Finished difference. Result has 446 places, 406 transitions, 1206 flow [2022-11-02 20:16:38,590 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1206, PETRI_PLACES=446, PETRI_TRANSITIONS=406} [2022-11-02 20:16:38,591 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 71 predicate places. [2022-11-02 20:16:38,591 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 406 transitions, 1206 flow [2022-11-02 20:16:38,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 368.34375) internal successors, (11787), 32 states have internal predecessors, (11787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:38,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:38,595 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:38,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:38,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:38,811 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:38,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:38,811 INFO L85 PathProgramCache]: Analyzing trace with hash -282501634, now seen corresponding path program 2 times [2022-11-02 20:16:38,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:38,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117906900] [2022-11-02 20:16:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:39,099 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:39,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937246193] [2022-11-02 20:16:39,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:16:39,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:39,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:39,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:39,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:16:40,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:16:40,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:16:40,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:16:40,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:40,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:40,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:40,280 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:40,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:40,309 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:16:40,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:16:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-11-02 20:16:40,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:16:40,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:40,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117906900] [2022-11-02 20:16:40,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:40,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937246193] [2022-11-02 20:16:40,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937246193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:40,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:40,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:16:40,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924890288] [2022-11-02 20:16:40,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:40,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:16:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:40,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:16:40,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:16:40,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 386 [2022-11-02 20:16:40,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 406 transitions, 1206 flow. Second operand has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:40,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:40,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 386 [2022-11-02 20:16:40,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:45,233 INFO L130 PetriNetUnfolder]: 745/5351 cut-off events. [2022-11-02 20:16:45,233 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-11-02 20:16:45,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 5351 events. 745/5351 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 17657 event pairs, 600 based on Foata normal form. 0/4990 useless extension candidates. Maximal degree in co-relation 6122. Up to 2620 conditions per place. [2022-11-02 20:16:45,267 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 121 selfloop transitions, 5 changer transitions 0/405 dead transitions. [2022-11-02 20:16:45,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 405 transitions, 1456 flow [2022-11-02 20:16:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:16:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:16:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1543 transitions. [2022-11-02 20:16:45,271 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6662348877374784 [2022-11-02 20:16:45,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1543 transitions. [2022-11-02 20:16:45,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1543 transitions. [2022-11-02 20:16:45,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:45,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1543 transitions. [2022-11-02 20:16:45,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,281 INFO L175 Difference]: Start difference. First operand has 446 places, 406 transitions, 1206 flow. Second operand 6 states and 1543 transitions. [2022-11-02 20:16:45,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 405 transitions, 1456 flow [2022-11-02 20:16:45,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 405 transitions, 1400 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-11-02 20:16:45,298 INFO L231 Difference]: Finished difference. Result has 432 places, 405 transitions, 1158 flow [2022-11-02 20:16:45,299 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1158, PETRI_PLACES=432, PETRI_TRANSITIONS=405} [2022-11-02 20:16:45,299 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 57 predicate places. [2022-11-02 20:16:45,300 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 405 transitions, 1158 flow [2022-11-02 20:16:45,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 248.5) internal successors, (1491), 6 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:45,301 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:45,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:16:45,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:16:45,527 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:16:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:45,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1259387778, now seen corresponding path program 1 times [2022-11-02 20:16:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846969738] [2022-11-02 20:16:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:45,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:16:45,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235155252] [2022-11-02 20:16:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:45,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:16:45,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:45,873 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:16:45,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:16:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 5970 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:16:47,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:16:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:50,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:16:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:53,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846969738] [2022-11-02 20:16:53,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:16:53,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235155252] [2022-11-02 20:16:53,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235155252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:16:53,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:16:53,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-11-02 20:16:53,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223372113] [2022-11-02 20:16:53,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:16:53,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-02 20:16:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-02 20:16:53,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 20:16:53,454 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 386 [2022-11-02 20:16:53,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 405 transitions, 1158 flow. Second operand has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:53,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:53,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 386 [2022-11-02 20:16:53,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:03,437 INFO L130 PetriNetUnfolder]: 7/5756 cut-off events. [2022-11-02 20:17:03,437 INFO L131 PetriNetUnfolder]: For 4308/4308 co-relation queries the response was YES. [2022-11-02 20:17:03,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7229 conditions, 5756 events. 7/5756 cut-off events. For 4308/4308 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 673 event pairs, 0 based on Foata normal form. 30/5772 useless extension candidates. Maximal degree in co-relation 7038. Up to 121 conditions per place. [2022-11-02 20:17:03,458 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 66 selfloop transitions, 90 changer transitions 0/506 dead transitions. [2022-11-02 20:17:03,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 506 transitions, 2244 flow [2022-11-02 20:17:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-02 20:17:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-11-02 20:17:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 33111 transitions. [2022-11-02 20:17:03,489 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9531088082901554 [2022-11-02 20:17:03,489 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 33111 transitions. [2022-11-02 20:17:03,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 33111 transitions. [2022-11-02 20:17:03,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:03,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 33111 transitions. [2022-11-02 20:17:03,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 367.9) internal successors, (33111), 90 states have internal predecessors, (33111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:03,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 386.0) internal successors, (35126), 91 states have internal predecessors, (35126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:03,590 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 386.0) internal successors, (35126), 91 states have internal predecessors, (35126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:03,590 INFO L175 Difference]: Start difference. First operand has 432 places, 405 transitions, 1158 flow. Second operand 90 states and 33111 transitions. [2022-11-02 20:17:03,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 506 transitions, 2244 flow [2022-11-02 20:17:03,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 506 transitions, 2234 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:17:03,614 INFO L231 Difference]: Finished difference. Result has 532 places, 451 transitions, 1802 flow [2022-11-02 20:17:03,615 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1802, PETRI_PLACES=532, PETRI_TRANSITIONS=451} [2022-11-02 20:17:03,615 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 157 predicate places. [2022-11-02 20:17:03,615 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 451 transitions, 1802 flow [2022-11-02 20:17:03,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 368.4754098360656) internal successors, (22477), 61 states have internal predecessors, (22477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:03,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:03,621 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:03,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:03,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:17:03,842 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:17:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash -522050599, now seen corresponding path program 2 times [2022-11-02 20:17:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196845642] [2022-11-02 20:17:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:04,267 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:17:04,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455581041] [2022-11-02 20:17:04,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:17:04,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:04,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:04,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:17:06,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:17:06,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:17:06,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:17:06,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:06,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:06,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:06,316 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:17:06,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:06,344 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:17:06,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:17:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39616 trivial. 0 not checked. [2022-11-02 20:17:06,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:17:06,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196845642] [2022-11-02 20:17:06,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:17:06,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455581041] [2022-11-02 20:17:06,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455581041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:17:06,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:17:06,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:17:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341839262] [2022-11-02 20:17:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:17:06,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:17:06,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:17:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:17:06,387 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-02 20:17:06,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 451 transitions, 1802 flow. Second operand has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:06,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:06,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-02 20:17:06,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:24,121 INFO L130 PetriNetUnfolder]: 1693/9847 cut-off events. [2022-11-02 20:17:24,121 INFO L131 PetriNetUnfolder]: For 2044/2044 co-relation queries the response was YES. [2022-11-02 20:17:24,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17136 conditions, 9847 events. 1693/9847 cut-off events. For 2044/2044 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32393 event pairs, 748 based on Foata normal form. 0/9235 useless extension candidates. Maximal degree in co-relation 12173. Up to 4851 conditions per place. [2022-11-02 20:17:24,173 INFO L137 encePairwiseOnDemand]: 374/386 looper letters, 257 selfloop transitions, 23 changer transitions 0/587 dead transitions. [2022-11-02 20:17:24,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 587 transitions, 2642 flow [2022-11-02 20:17:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:17:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:17:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1589 transitions. [2022-11-02 20:17:24,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6860967184801382 [2022-11-02 20:17:24,175 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1589 transitions. [2022-11-02 20:17:24,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1589 transitions. [2022-11-02 20:17:24,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:24,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1589 transitions. [2022-11-02 20:17:24,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.8333333333333) internal successors, (1589), 6 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:24,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:24,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 386.0) internal successors, (2702), 7 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:24,183 INFO L175 Difference]: Start difference. First operand has 532 places, 451 transitions, 1802 flow. Second operand 6 states and 1589 transitions. [2022-11-02 20:17:24,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 587 transitions, 2642 flow [2022-11-02 20:17:24,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 587 transitions, 2524 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-11-02 20:17:24,224 INFO L231 Difference]: Finished difference. Result has 500 places, 473 transitions, 1842 flow [2022-11-02 20:17:24,225 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1842, PETRI_PLACES=500, PETRI_TRANSITIONS=473} [2022-11-02 20:17:24,226 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 125 predicate places. [2022-11-02 20:17:24,226 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 473 transitions, 1842 flow [2022-11-02 20:17:24,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 232.83333333333334) internal successors, (1397), 6 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:24,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:24,228 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:24,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:24,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:17:24,450 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:17:24,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:24,451 INFO L85 PathProgramCache]: Analyzing trace with hash 134098110, now seen corresponding path program 1 times [2022-11-02 20:17:24,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:24,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006459323] [2022-11-02 20:17:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:24,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:24,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:17:24,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904244690] [2022-11-02 20:17:24,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:24,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:24,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:25,003 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:25,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:17:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:17:28,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 11533 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:17:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:17:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-02 20:17:34,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:17:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 39616 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39615 trivial. 0 not checked. [2022-11-02 20:17:40,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:17:40,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006459323] [2022-11-02 20:17:40,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:17:40,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904244690] [2022-11-02 20:17:40,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904244690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:17:40,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:17:40,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:17:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034053985] [2022-11-02 20:17:40,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:17:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:17:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:17:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:17:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:17:40,503 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 386 [2022-11-02 20:17:40,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 473 transitions, 1842 flow. Second operand has 8 states, 8 states have (on average 365.875) internal successors, (2927), 8 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:40,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:17:40,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 386 [2022-11-02 20:17:40,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:17:52,437 INFO L130 PetriNetUnfolder]: 73/9078 cut-off events. [2022-11-02 20:17:52,438 INFO L131 PetriNetUnfolder]: For 3205/3208 co-relation queries the response was YES. [2022-11-02 20:17:52,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11446 conditions, 9078 events. 73/9078 cut-off events. For 3205/3208 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3629 event pairs, 8 based on Foata normal form. 2/9004 useless extension candidates. Maximal degree in co-relation 10886. Up to 181 conditions per place. [2022-11-02 20:17:52,469 INFO L137 encePairwiseOnDemand]: 380/386 looper letters, 21 selfloop transitions, 9 changer transitions 0/489 dead transitions. [2022-11-02 20:17:52,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 489 transitions, 1936 flow [2022-11-02 20:17:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:17:52,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:17:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3299 transitions. [2022-11-02 20:17:52,474 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9496257915947035 [2022-11-02 20:17:52,475 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3299 transitions. [2022-11-02 20:17:52,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3299 transitions. [2022-11-02 20:17:52,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:17:52,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3299 transitions. [2022-11-02 20:17:52,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 366.55555555555554) internal successors, (3299), 9 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:52,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:52,487 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 386.0) internal successors, (3860), 10 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:52,487 INFO L175 Difference]: Start difference. First operand has 500 places, 473 transitions, 1842 flow. Second operand 9 states and 3299 transitions. [2022-11-02 20:17:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 489 transitions, 1936 flow [2022-11-02 20:17:52,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 489 transitions, 1936 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:17:52,536 INFO L231 Difference]: Finished difference. Result has 511 places, 479 transitions, 1892 flow [2022-11-02 20:17:52,537 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1892, PETRI_PLACES=511, PETRI_TRANSITIONS=479} [2022-11-02 20:17:52,538 INFO L287 CegarLoopForPetriNet]: 375 programPoint places, 136 predicate places. [2022-11-02 20:17:52,538 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 479 transitions, 1892 flow [2022-11-02 20:17:52,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 365.875) internal successors, (2927), 8 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:17:52,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:17:52,542 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:17:52,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:17:52,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:52,763 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr0ASSERT_VIOLATIONDATA_RACE === [fErr0ASSERT_VIOLATIONDATA_RACE, fErr1ASSERT_VIOLATIONDATA_RACE, fErr2ASSERT_VIOLATIONDATA_RACE, fErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-11-02 20:17:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:17:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 732448584, now seen corresponding path program 2 times [2022-11-02 20:17:52,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:17:52,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133334185] [2022-11-02 20:17:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:17:52,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:17:54,520 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:17:54,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68606771] [2022-11-02 20:17:54,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:17:54,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:17:54,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:17:54,528 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:17:54,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_086e4db8-dc0d-41ea-833f-2485dfd7afe0/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:17:59,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:17:59,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:17:59,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:18:00,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:18:00,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:00,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:00,510 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:00,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:00,542 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:18:00,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-02 20:18:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 364812 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364812 trivial. 0 not checked. [2022-11-02 20:18:00,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:18:00,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:18:00,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133334185] [2022-11-02 20:18:00,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:18:00,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68606771] [2022-11-02 20:18:00,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68606771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:18:00,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:18:00,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:18:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331363073] [2022-11-02 20:18:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:18:00,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:18:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:18:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:18:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:18:00,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 386 [2022-11-02 20:18:00,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 479 transitions, 1892 flow. Second operand has 6 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:18:00,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:18:00,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 386 [2022-11-02 20:18:00,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand