./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8 --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 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e --- 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-e04fb08 [2022-11-16 11:04:45,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:04:45,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:04:46,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:04:46,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:04:46,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:04:46,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:04:46,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:04:46,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:04:46,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:04:46,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:04:46,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:04:46,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:04:46,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:04:46,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:04:46,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:04:46,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:04:46,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:04:46,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:04:46,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:04:46,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:04:46,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:04:46,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:04:46,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:04:46,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:04:46,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:04:46,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:04:46,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:04:46,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:04:46,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:04:46,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:04:46,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:04:46,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:04:46,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:04:46,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:04:46,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:04:46,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:04:46,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:04:46,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:04:46,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:04:46,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:04:46,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 11:04:46,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:04:46,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:04:46,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:04:46,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:04:46,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:04:46,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:04:46,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:04:46,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:04:46,122 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:04:46,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:04:46,123 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:04:46,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:04:46,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:04:46,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:04:46,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:04:46,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:04:46,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:04:46,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:04:46,125 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 11:04:46,125 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:04:46,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:04:46,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:04:46,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:04:46,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:04:46,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:04:46,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:04:46,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:46,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:04:46,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:04:46,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:04:46,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:04:46,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:04:46,130 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:04:46,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:04:46,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:04:46,130 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_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e [2022-11-16 11:04:46,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:04:46,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:04:46,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:04:46,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:04:46,450 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:04:46,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2022-11-16 11:04:46,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/data/ce7bc73c7/9c0be6a17ae24062a5458ec296068288/FLAG6160ad3df [2022-11-16 11:04:47,107 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:04:47,115 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/sv-benchmarks/c/goblint-regression/06-symbeq_04-funloop_hard1.i [2022-11-16 11:04:47,142 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/data/ce7bc73c7/9c0be6a17ae24062a5458ec296068288/FLAG6160ad3df [2022-11-16 11:04:47,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/data/ce7bc73c7/9c0be6a17ae24062a5458ec296068288 [2022-11-16 11:04:47,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:04:47,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:04:47,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:47,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:04:47,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:04:47,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:47" (1/1) ... [2022-11-16 11:04:47,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130fff45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:47, skipping insertion in model container [2022-11-16 11:04:47,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:47" (1/1) ... [2022-11-16 11:04:47,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:04:47,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:04:48,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:48,167 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:04:48,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:48,319 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:04:48,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48 WrapperNode [2022-11-16 11:04:48,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:48,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:48,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:04:48,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:04:48,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,414 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2022-11-16 11:04:48,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:48,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:04:48,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:04:48,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:04:48,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:04:48,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:04:48,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:04:48,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:04:48,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (1/1) ... [2022-11-16 11:04:48,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:48,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:48,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:04:48,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:04:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:04:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:04:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:04:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:04:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:04:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:04:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-16 11:04:48,618 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-16 11:04:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:04:48,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:04:48,621 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:04:48,803 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:04:48,822 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:04:49,174 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:04:49,182 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:04:49,182 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:04:49,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:04:49 BoogieIcfgContainer [2022-11-16 11:04:49,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:04:49,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:04:49,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:04:49,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:04:49,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:04:47" (1/3) ... [2022-11-16 11:04:49,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3886f7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:49, skipping insertion in model container [2022-11-16 11:04:49,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:48" (2/3) ... [2022-11-16 11:04:49,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3886f7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:49, skipping insertion in model container [2022-11-16 11:04:49,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:04:49" (3/3) ... [2022-11-16 11:04:49,193 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_04-funloop_hard1.i [2022-11-16 11:04:49,202 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:04:49,213 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:04:49,213 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:04:49,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:04:49,300 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-16 11:04:49,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 261 flow [2022-11-16 11:04:49,399 INFO L130 PetriNetUnfolder]: 6/127 cut-off events. [2022-11-16 11:04:49,399 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:04:49,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 6/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-11-16 11:04:49,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 128 transitions, 261 flow [2022-11-16 11:04:49,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 127 transitions, 257 flow [2022-11-16 11:04:49,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:04:49,430 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;@2a1cb095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:04:49,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-16 11:04:49,449 INFO L130 PetriNetUnfolder]: 4/61 cut-off events. [2022-11-16 11:04:49,450 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:04:49,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:49,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:49,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:49,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1719096125, now seen corresponding path program 1 times [2022-11-16 11:04:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:49,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678848288] [2022-11-16 11:04:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:49,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:49,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678848288] [2022-11-16 11:04:49,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678848288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:49,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:49,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:04:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529052684] [2022-11-16 11:04:49,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:49,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:04:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:04:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:04:49,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 128 [2022-11-16 11:04:49,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 127 transitions, 257 flow. Second operand has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:49,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:49,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 128 [2022-11-16 11:04:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:49,794 INFO L130 PetriNetUnfolder]: 3/124 cut-off events. [2022-11-16 11:04:49,794 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:04:49,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 124 events. 3/124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 226 event pairs, 0 based on Foata normal form. 3/118 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2022-11-16 11:04:49,798 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 1 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2022-11-16 11:04:49,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 124 transitions, 253 flow [2022-11-16 11:04:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:04:49,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:04:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2022-11-16 11:04:49,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.984375 [2022-11-16 11:04:49,814 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2022-11-16 11:04:49,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2022-11-16 11:04:49,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:49,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2022-11-16 11:04:49,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:49,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:49,829 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:49,831 INFO L175 Difference]: Start difference. First operand has 125 places, 127 transitions, 257 flow. Second operand 2 states and 252 transitions. [2022-11-16 11:04:49,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 124 transitions, 253 flow [2022-11-16 11:04:49,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 124 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:04:49,842 INFO L231 Difference]: Finished difference. Result has 125 places, 124 transitions, 250 flow [2022-11-16 11:04:49,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=250, PETRI_PLACES=125, PETRI_TRANSITIONS=124} [2022-11-16 11:04:49,852 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2022-11-16 11:04:49,852 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 124 transitions, 250 flow [2022-11-16 11:04:49,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:49,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:49,853 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:49,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:04:49,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash -932830209, now seen corresponding path program 1 times [2022-11-16 11:04:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:49,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732096269] [2022-11-16 11:04:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:50,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:50,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732096269] [2022-11-16 11:04:50,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732096269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:50,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:50,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:04:50,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417793418] [2022-11-16 11:04:50,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:50,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:04:50,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:50,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:04:50,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:04:50,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 128 [2022-11-16 11:04:50,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 124 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:50,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 128 [2022-11-16 11:04:50,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:50,114 INFO L130 PetriNetUnfolder]: 3/128 cut-off events. [2022-11-16 11:04:50,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:04:50,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 128 events. 3/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2022-11-16 11:04:50,117 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 10 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2022-11-16 11:04:50,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 128 transitions, 282 flow [2022-11-16 11:04:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:04:50,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:04:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2022-11-16 11:04:50,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479166666666666 [2022-11-16 11:04:50,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2022-11-16 11:04:50,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2022-11-16 11:04:50,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:50,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2022-11-16 11:04:50,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,133 INFO L175 Difference]: Start difference. First operand has 125 places, 124 transitions, 250 flow. Second operand 3 states and 364 transitions. [2022-11-16 11:04:50,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 128 transitions, 282 flow [2022-11-16 11:04:50,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:04:50,137 INFO L231 Difference]: Finished difference. Result has 128 places, 125 transitions, 262 flow [2022-11-16 11:04:50,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2022-11-16 11:04:50,138 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 3 predicate places. [2022-11-16 11:04:50,139 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 262 flow [2022-11-16 11:04:50,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:50,140 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:50,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:04:50,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 527090186, now seen corresponding path program 1 times [2022-11-16 11:04:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:50,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121312387] [2022-11-16 11:04:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:50,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:50,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121312387] [2022-11-16 11:04:50,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121312387] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:50,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496344049] [2022-11-16 11:04:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:50,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:50,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:50,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:04:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:04:50,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:04:50,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:04:50,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496344049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:50,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:04:50,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 11:04:50,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398610364] [2022-11-16 11:04:50,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:50,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:04:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:50,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:04:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:04:50,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-16 11:04:50,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:50,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-16 11:04:50,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:50,647 INFO L130 PetriNetUnfolder]: 3/158 cut-off events. [2022-11-16 11:04:50,647 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:04:50,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 158 events. 3/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 160 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 178. Up to 10 conditions per place. [2022-11-16 11:04:50,650 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 11 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2022-11-16 11:04:50,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 129 transitions, 296 flow [2022-11-16 11:04:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:04:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:04:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2022-11-16 11:04:50,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9427083333333334 [2022-11-16 11:04:50,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2022-11-16 11:04:50,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2022-11-16 11:04:50,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:50,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2022-11-16 11:04:50,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,657 INFO L175 Difference]: Start difference. First operand has 128 places, 125 transitions, 262 flow. Second operand 3 states and 362 transitions. [2022-11-16 11:04:50,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 129 transitions, 296 flow [2022-11-16 11:04:50,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:04:50,661 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 272 flow [2022-11-16 11:04:50,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2022-11-16 11:04:50,662 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 5 predicate places. [2022-11-16 11:04:50,662 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 272 flow [2022-11-16 11:04:50,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:50,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:50,663 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:50,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:50,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:50,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash -877434549, now seen corresponding path program 1 times [2022-11-16 11:04:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116407806] [2022-11-16 11:04:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:51,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:51,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116407806] [2022-11-16 11:04:51,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116407806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:51,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289172623] [2022-11-16 11:04:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:51,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:51,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:51,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:51,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:04:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:51,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:04:51,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:51,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:51,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289172623] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:51,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:51,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 11:04:51,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130380779] [2022-11-16 11:04:51,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:51,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:04:51,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:04:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:04:51,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-16 11:04:51,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 126 transitions, 272 flow. Second operand has 10 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:51,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:51,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-16 11:04:51,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:51,555 INFO L130 PetriNetUnfolder]: 3/165 cut-off events. [2022-11-16 11:04:51,561 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:04:51,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 165 events. 3/165 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 197. Up to 6 conditions per place. [2022-11-16 11:04:51,566 INFO L137 encePairwiseOnDemand]: 122/128 looper letters, 11 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2022-11-16 11:04:51,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 136 transitions, 334 flow [2022-11-16 11:04:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:04:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:04:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-11-16 11:04:51,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9253472222222222 [2022-11-16 11:04:51,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-11-16 11:04:51,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-11-16 11:04:51,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:51,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-11-16 11:04:51,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:51,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:51,580 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 128.0) internal successors, (1280), 10 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:51,580 INFO L175 Difference]: Start difference. First operand has 130 places, 126 transitions, 272 flow. Second operand 9 states and 1066 transitions. [2022-11-16 11:04:51,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 136 transitions, 334 flow [2022-11-16 11:04:51,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 136 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:04:51,586 INFO L231 Difference]: Finished difference. Result has 140 places, 132 transitions, 320 flow [2022-11-16 11:04:51,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=140, PETRI_TRANSITIONS=132} [2022-11-16 11:04:51,589 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 15 predicate places. [2022-11-16 11:04:51,589 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 132 transitions, 320 flow [2022-11-16 11:04:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:51,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:51,590 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:51,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:51,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash -198306197, now seen corresponding path program 2 times [2022-11-16 11:04:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260931976] [2022-11-16 11:04:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:52,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260931976] [2022-11-16 11:04:52,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260931976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:52,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71024786] [2022-11-16 11:04:52,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:04:52,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:52,008 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:52,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:04:52,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:04:52,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:04:52,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:04:52,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:52,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:04:52,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:04:52,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:04:52,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:04:52,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:04:52,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 11:04:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:04:52,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:04:52,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71024786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:52,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:04:52,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-16 11:04:52,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781518875] [2022-11-16 11:04:52,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:52,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:04:52,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:04:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:04:52,325 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 128 [2022-11-16 11:04:52,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 132 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:52,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:52,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 128 [2022-11-16 11:04:52,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:53,242 INFO L130 PetriNetUnfolder]: 779/2780 cut-off events. [2022-11-16 11:04:53,242 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 11:04:53,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2780 events. 779/2780 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 19979 event pairs, 424 based on Foata normal form. 0/2513 useless extension candidates. Maximal degree in co-relation 4386. Up to 1258 conditions per place. [2022-11-16 11:04:53,260 INFO L137 encePairwiseOnDemand]: 117/128 looper letters, 75 selfloop transitions, 22 changer transitions 0/186 dead transitions. [2022-11-16 11:04:53,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 186 transitions, 622 flow [2022-11-16 11:04:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:04:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:04:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 590 transitions. [2022-11-16 11:04:53,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7682291666666666 [2022-11-16 11:04:53,263 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 590 transitions. [2022-11-16 11:04:53,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 590 transitions. [2022-11-16 11:04:53,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:53,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 590 transitions. [2022-11-16 11:04:53,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:53,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:53,268 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:53,268 INFO L175 Difference]: Start difference. First operand has 140 places, 132 transitions, 320 flow. Second operand 6 states and 590 transitions. [2022-11-16 11:04:53,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 186 transitions, 622 flow [2022-11-16 11:04:53,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 186 transitions, 616 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-16 11:04:53,273 INFO L231 Difference]: Finished difference. Result has 149 places, 153 transitions, 464 flow [2022-11-16 11:04:53,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=149, PETRI_TRANSITIONS=153} [2022-11-16 11:04:53,274 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 24 predicate places. [2022-11-16 11:04:53,275 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 153 transitions, 464 flow [2022-11-16 11:04:53,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:53,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:53,275 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:04:53,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:53,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash 697598481, now seen corresponding path program 1 times [2022-11-16 11:04:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:53,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68926353] [2022-11-16 11:04:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:53,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:53,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:53,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68926353] [2022-11-16 11:04:53,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68926353] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:53,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406725778] [2022-11-16 11:04:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:53,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:53,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:53,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:04:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:53,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:04:53,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:53,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:54,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406725778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:54,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:54,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 11:04:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141507293] [2022-11-16 11:04:54,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:54,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:04:54,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:04:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:04:54,073 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-16 11:04:54,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 153 transitions, 464 flow. Second operand has 18 states, 18 states have (on average 118.27777777777777) internal successors, (2129), 18 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:54,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:54,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-16 11:04:54,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:54,474 INFO L130 PetriNetUnfolder]: 87/802 cut-off events. [2022-11-16 11:04:54,474 INFO L131 PetriNetUnfolder]: For 80/90 co-relation queries the response was YES. [2022-11-16 11:04:54,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 802 events. 87/802 cut-off events. For 80/90 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4046 event pairs, 8 based on Foata normal form. 4/754 useless extension candidates. Maximal degree in co-relation 1189. Up to 110 conditions per place. [2022-11-16 11:04:54,481 INFO L137 encePairwiseOnDemand]: 122/128 looper letters, 19 selfloop transitions, 21 changer transitions 0/177 dead transitions. [2022-11-16 11:04:54,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 177 transitions, 644 flow [2022-11-16 11:04:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:04:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:04:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2480 transitions. [2022-11-16 11:04:54,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9226190476190477 [2022-11-16 11:04:54,487 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2480 transitions. [2022-11-16 11:04:54,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2480 transitions. [2022-11-16 11:04:54,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:54,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2480 transitions. [2022-11-16 11:04:54,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 118.0952380952381) internal successors, (2480), 21 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:54,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:54,502 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:54,502 INFO L175 Difference]: Start difference. First operand has 149 places, 153 transitions, 464 flow. Second operand 21 states and 2480 transitions. [2022-11-16 11:04:54,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 177 transitions, 644 flow [2022-11-16 11:04:54,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 177 transitions, 644 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:04:54,509 INFO L231 Difference]: Finished difference. Result has 174 places, 166 transitions, 594 flow [2022-11-16 11:04:54,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=594, PETRI_PLACES=174, PETRI_TRANSITIONS=166} [2022-11-16 11:04:54,510 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 49 predicate places. [2022-11-16 11:04:54,510 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 166 transitions, 594 flow [2022-11-16 11:04:54,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 118.27777777777777) internal successors, (2129), 18 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:54,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:54,512 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:04:54,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:54,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:54,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:54,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:54,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1015929775, now seen corresponding path program 2 times [2022-11-16 11:04:54,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:54,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742433791] [2022-11-16 11:04:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:54,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:55,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:55,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742433791] [2022-11-16 11:04:55,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742433791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:55,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583486065] [2022-11-16 11:04:55,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:04:55,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:55,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:55,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:55,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:04:55,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:04:55,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:04:55,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:04:55,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:55,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 11:04:55,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:55,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 11:04:55,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:55,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:55,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:04:55,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-16 11:04:55,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:55,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:55,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:04:55,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:04:55,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-16 11:04:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 11:04:55,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:04:55,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583486065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:55,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:04:55,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 25 [2022-11-16 11:04:55,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849739725] [2022-11-16 11:04:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:55,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:04:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:04:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:04:55,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 128 [2022-11-16 11:04:55,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 166 transitions, 594 flow. Second operand has 10 states, 10 states have (on average 69.6) internal successors, (696), 10 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:55,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:55,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 128 [2022-11-16 11:04:55,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:04:58,180 INFO L130 PetriNetUnfolder]: 2666/7211 cut-off events. [2022-11-16 11:04:58,180 INFO L131 PetriNetUnfolder]: For 2068/2084 co-relation queries the response was YES. [2022-11-16 11:04:58,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14920 conditions, 7211 events. 2666/7211 cut-off events. For 2068/2084 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 56471 event pairs, 1010 based on Foata normal form. 0/6626 useless extension candidates. Maximal degree in co-relation 14902. Up to 2598 conditions per place. [2022-11-16 11:04:58,247 INFO L137 encePairwiseOnDemand]: 110/128 looper letters, 367 selfloop transitions, 33 changer transitions 0/488 dead transitions. [2022-11-16 11:04:58,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 488 transitions, 2368 flow [2022-11-16 11:04:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:04:58,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:04:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1162 transitions. [2022-11-16 11:04:58,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7565104166666666 [2022-11-16 11:04:58,252 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1162 transitions. [2022-11-16 11:04:58,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1162 transitions. [2022-11-16 11:04:58,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:04:58,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1162 transitions. [2022-11-16 11:04:58,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.83333333333333) internal successors, (1162), 12 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:58,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:58,260 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:58,260 INFO L175 Difference]: Start difference. First operand has 174 places, 166 transitions, 594 flow. Second operand 12 states and 1162 transitions. [2022-11-16 11:04:58,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 488 transitions, 2368 flow [2022-11-16 11:04:58,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 488 transitions, 2344 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-16 11:04:58,276 INFO L231 Difference]: Finished difference. Result has 187 places, 197 transitions, 856 flow [2022-11-16 11:04:58,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=856, PETRI_PLACES=187, PETRI_TRANSITIONS=197} [2022-11-16 11:04:58,277 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 62 predicate places. [2022-11-16 11:04:58,278 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 197 transitions, 856 flow [2022-11-16 11:04:58,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.6) internal successors, (696), 10 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:58,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:04:58,278 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:04:58,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:04:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:58,484 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:04:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash -177478757, now seen corresponding path program 1 times [2022-11-16 11:04:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:58,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405985136] [2022-11-16 11:04:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:58,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:58,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405985136] [2022-11-16 11:04:58,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405985136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:04:58,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639505612] [2022-11-16 11:04:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:58,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:04:58,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:58,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:04:58,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:04:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:59,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 11:04:59,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:04:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:59,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:04:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:04:59,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639505612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:04:59,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:04:59,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-11-16 11:04:59,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77744130] [2022-11-16 11:04:59,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:04:59,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:04:59,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:04:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:04:59,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 128 [2022-11-16 11:04:59,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 197 transitions, 856 flow. Second operand has 23 states, 23 states have (on average 118.43478260869566) internal successors, (2724), 23 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:04:59,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:04:59,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 128 [2022-11-16 11:04:59,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:00,300 INFO L130 PetriNetUnfolder]: 279/2040 cut-off events. [2022-11-16 11:05:00,300 INFO L131 PetriNetUnfolder]: For 1350/1417 co-relation queries the response was YES. [2022-11-16 11:05:00,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 2040 events. 279/2040 cut-off events. For 1350/1417 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 15178 event pairs, 65 based on Foata normal form. 7/1971 useless extension candidates. Maximal degree in co-relation 3944. Up to 278 conditions per place. [2022-11-16 11:05:00,321 INFO L137 encePairwiseOnDemand]: 122/128 looper letters, 25 selfloop transitions, 30 changer transitions 0/223 dead transitions. [2022-11-16 11:05:00,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 223 transitions, 1106 flow [2022-11-16 11:05:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:05:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:05:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3538 transitions. [2022-11-16 11:05:00,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9213541666666667 [2022-11-16 11:05:00,331 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3538 transitions. [2022-11-16 11:05:00,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3538 transitions. [2022-11-16 11:05:00,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:00,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3538 transitions. [2022-11-16 11:05:00,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 117.93333333333334) internal successors, (3538), 30 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:00,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:00,353 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 128.0) internal successors, (3968), 31 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:00,354 INFO L175 Difference]: Start difference. First operand has 187 places, 197 transitions, 856 flow. Second operand 30 states and 3538 transitions. [2022-11-16 11:05:00,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 223 transitions, 1106 flow [2022-11-16 11:05:00,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 223 transitions, 1105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:00,371 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 1007 flow [2022-11-16 11:05:00,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1007, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2022-11-16 11:05:00,375 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 94 predicate places. [2022-11-16 11:05:00,375 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 1007 flow [2022-11-16 11:05:00,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 118.43478260869566) internal successors, (2724), 23 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:00,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:00,377 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:00,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:05:00,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash 26007824, now seen corresponding path program 2 times [2022-11-16 11:05:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:00,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251137898] [2022-11-16 11:05:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:01,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:01,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251137898] [2022-11-16 11:05:01,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251137898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:01,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:01,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016388868] [2022-11-16 11:05:01,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:01,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:05:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:01,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:05:01,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:01,167 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 128 [2022-11-16 11:05:01,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 1007 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:01,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:01,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 128 [2022-11-16 11:05:01,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:03,041 INFO L130 PetriNetUnfolder]: 1977/6642 cut-off events. [2022-11-16 11:05:03,041 INFO L131 PetriNetUnfolder]: For 4612/4714 co-relation queries the response was YES. [2022-11-16 11:05:03,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15818 conditions, 6642 events. 1977/6642 cut-off events. For 4612/4714 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 55186 event pairs, 866 based on Foata normal form. 73/6379 useless extension candidates. Maximal degree in co-relation 15788. Up to 3476 conditions per place. [2022-11-16 11:05:03,136 INFO L137 encePairwiseOnDemand]: 113/128 looper letters, 106 selfloop transitions, 57 changer transitions 0/278 dead transitions. [2022-11-16 11:05:03,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 278 transitions, 1667 flow [2022-11-16 11:05:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:05:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:05:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 579 transitions. [2022-11-16 11:05:03,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75390625 [2022-11-16 11:05:03,139 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 579 transitions. [2022-11-16 11:05:03,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 579 transitions. [2022-11-16 11:05:03,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:03,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 579 transitions. [2022-11-16 11:05:03,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.5) internal successors, (579), 6 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:03,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:03,145 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:03,145 INFO L175 Difference]: Start difference. First operand has 219 places, 207 transitions, 1007 flow. Second operand 6 states and 579 transitions. [2022-11-16 11:05:03,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 278 transitions, 1667 flow [2022-11-16 11:05:03,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 278 transitions, 1621 flow, removed 5 selfloop flow, removed 18 redundant places. [2022-11-16 11:05:03,162 INFO L231 Difference]: Finished difference. Result has 211 places, 258 transitions, 1495 flow [2022-11-16 11:05:03,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1495, PETRI_PLACES=211, PETRI_TRANSITIONS=258} [2022-11-16 11:05:03,163 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 86 predicate places. [2022-11-16 11:05:03,164 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 258 transitions, 1495 flow [2022-11-16 11:05:03,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:03,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:03,164 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:03,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:05:03,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash 360970443, now seen corresponding path program 1 times [2022-11-16 11:05:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:03,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172438313] [2022-11-16 11:05:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:03,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:03,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172438313] [2022-11-16 11:05:03,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172438313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:03,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:03,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419578508] [2022-11-16 11:05:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:05:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:05:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:03,737 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 128 [2022-11-16 11:05:03,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 258 transitions, 1495 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:03,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:03,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 128 [2022-11-16 11:05:03,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:06,198 INFO L130 PetriNetUnfolder]: 2720/8418 cut-off events. [2022-11-16 11:05:06,199 INFO L131 PetriNetUnfolder]: For 12970/13060 co-relation queries the response was YES. [2022-11-16 11:05:06,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24026 conditions, 8418 events. 2720/8418 cut-off events. For 12970/13060 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 71577 event pairs, 950 based on Foata normal form. 6/8129 useless extension candidates. Maximal degree in co-relation 23991. Up to 4699 conditions per place. [2022-11-16 11:05:06,294 INFO L137 encePairwiseOnDemand]: 105/128 looper letters, 160 selfloop transitions, 103 changer transitions 0/377 dead transitions. [2022-11-16 11:05:06,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 377 transitions, 2649 flow [2022-11-16 11:05:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:05:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:05:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 627 transitions. [2022-11-16 11:05:06,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81640625 [2022-11-16 11:05:06,298 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 627 transitions. [2022-11-16 11:05:06,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 627 transitions. [2022-11-16 11:05:06,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:06,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 627 transitions. [2022-11-16 11:05:06,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,303 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,304 INFO L175 Difference]: Start difference. First operand has 211 places, 258 transitions, 1495 flow. Second operand 6 states and 627 transitions. [2022-11-16 11:05:06,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 377 transitions, 2649 flow [2022-11-16 11:05:06,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 377 transitions, 2549 flow, removed 50 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:06,349 INFO L231 Difference]: Finished difference. Result has 221 places, 343 transitions, 2385 flow [2022-11-16 11:05:06,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2385, PETRI_PLACES=221, PETRI_TRANSITIONS=343} [2022-11-16 11:05:06,351 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 96 predicate places. [2022-11-16 11:05:06,351 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 343 transitions, 2385 flow [2022-11-16 11:05:06,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:06,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:06,352 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:06,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:05:06,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:06,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:06,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2059615209, now seen corresponding path program 1 times [2022-11-16 11:05:06,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:06,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40542428] [2022-11-16 11:05:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:05:07,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:07,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40542428] [2022-11-16 11:05:07,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40542428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:07,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278868891] [2022-11-16 11:05:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:07,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:07,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:07,801 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:07,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:05:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:07,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:05:07,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:08,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:05:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:08,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:08,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278868891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:08,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:08,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:05:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867629695] [2022-11-16 11:05:08,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:08,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:08,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:08,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-16 11:05:08,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 343 transitions, 2385 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:08,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:08,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-16 11:05:08,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:13,447 INFO L130 PetriNetUnfolder]: 6829/17641 cut-off events. [2022-11-16 11:05:13,448 INFO L131 PetriNetUnfolder]: For 34490/34490 co-relation queries the response was YES. [2022-11-16 11:05:13,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54900 conditions, 17641 events. 6829/17641 cut-off events. For 34490/34490 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 150111 event pairs, 1956 based on Foata normal form. 13/17328 useless extension candidates. Maximal degree in co-relation 54860. Up to 6172 conditions per place. [2022-11-16 11:05:13,851 INFO L137 encePairwiseOnDemand]: 115/128 looper letters, 845 selfloop transitions, 16 changer transitions 0/946 dead transitions. [2022-11-16 11:05:13,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 946 transitions, 8597 flow [2022-11-16 11:05:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:05:13,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:05:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 968 transitions. [2022-11-16 11:05:13,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2022-11-16 11:05:13,858 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 968 transitions. [2022-11-16 11:05:13,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 968 transitions. [2022-11-16 11:05:13,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:13,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 968 transitions. [2022-11-16 11:05:13,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 80.66666666666667) internal successors, (968), 12 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:13,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:13,867 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:13,867 INFO L175 Difference]: Start difference. First operand has 221 places, 343 transitions, 2385 flow. Second operand 12 states and 968 transitions. [2022-11-16 11:05:13,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 946 transitions, 8597 flow [2022-11-16 11:05:14,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 946 transitions, 8087 flow, removed 255 selfloop flow, removed 0 redundant places. [2022-11-16 11:05:14,070 INFO L231 Difference]: Finished difference. Result has 239 places, 357 transitions, 2332 flow [2022-11-16 11:05:14,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2332, PETRI_PLACES=239, PETRI_TRANSITIONS=357} [2022-11-16 11:05:14,071 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 114 predicate places. [2022-11-16 11:05:14,072 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 357 transitions, 2332 flow [2022-11-16 11:05:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:14,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:14,072 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:14,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 11:05:14,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:05:14,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1396501721, now seen corresponding path program 2 times [2022-11-16 11:05:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918355297] [2022-11-16 11:05:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:05:15,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:15,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918355297] [2022-11-16 11:05:15,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918355297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:15,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132247957] [2022-11-16 11:05:15,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:05:15,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:15,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:15,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:15,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:05:15,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:05:15,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:15,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:05:15,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:15,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:05:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:16,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:16,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132247957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:16,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:16,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-16 11:05:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044572787] [2022-11-16 11:05:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:16,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:16,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:16,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:16,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-16 11:05:16,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 357 transitions, 2332 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:16,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:16,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-16 11:05:16,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:22,107 INFO L130 PetriNetUnfolder]: 8097/20912 cut-off events. [2022-11-16 11:05:22,107 INFO L131 PetriNetUnfolder]: For 41026/41033 co-relation queries the response was YES. [2022-11-16 11:05:22,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67207 conditions, 20912 events. 8097/20912 cut-off events. For 41026/41033 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 187252 event pairs, 2195 based on Foata normal form. 17/20510 useless extension candidates. Maximal degree in co-relation 67159. Up to 6887 conditions per place. [2022-11-16 11:05:22,392 INFO L137 encePairwiseOnDemand]: 115/128 looper letters, 938 selfloop transitions, 21 changer transitions 0/1044 dead transitions. [2022-11-16 11:05:22,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1044 transitions, 8721 flow [2022-11-16 11:05:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:05:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:05:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1040 transitions. [2022-11-16 11:05:22,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2022-11-16 11:05:22,398 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1040 transitions. [2022-11-16 11:05:22,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1040 transitions. [2022-11-16 11:05:22,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:22,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1040 transitions. [2022-11-16 11:05:22,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 86.66666666666667) internal successors, (1040), 12 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:22,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:22,425 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:22,426 INFO L175 Difference]: Start difference. First operand has 239 places, 357 transitions, 2332 flow. Second operand 12 states and 1040 transitions. [2022-11-16 11:05:22,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 1044 transitions, 8721 flow [2022-11-16 11:05:22,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 1044 transitions, 8706 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:05:22,621 INFO L231 Difference]: Finished difference. Result has 253 places, 369 transitions, 2472 flow [2022-11-16 11:05:22,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2472, PETRI_PLACES=253, PETRI_TRANSITIONS=369} [2022-11-16 11:05:22,623 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 128 predicate places. [2022-11-16 11:05:22,624 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 369 transitions, 2472 flow [2022-11-16 11:05:22,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:22,624 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:22,625 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:22,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:22,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:05:22,837 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash 110844952, now seen corresponding path program 1 times [2022-11-16 11:05:22,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:22,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064302782] [2022-11-16 11:05:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:22,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:05:24,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:24,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064302782] [2022-11-16 11:05:24,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064302782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:24,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43305582] [2022-11-16 11:05:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:24,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:24,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:24,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:24,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:05:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:24,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:05:24,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:24,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:05:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:24,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:24,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43305582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:24,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:24,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-11-16 11:05:24,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211705980] [2022-11-16 11:05:24,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:24,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:24,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:05:24,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-16 11:05:24,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 369 transitions, 2472 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:24,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:24,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-16 11:05:24,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:32,137 INFO L130 PetriNetUnfolder]: 9812/25429 cut-off events. [2022-11-16 11:05:32,138 INFO L131 PetriNetUnfolder]: For 57025/57042 co-relation queries the response was YES. [2022-11-16 11:05:32,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84024 conditions, 25429 events. 9812/25429 cut-off events. For 57025/57042 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 234968 event pairs, 2796 based on Foata normal form. 21/24902 useless extension candidates. Maximal degree in co-relation 83971. Up to 7879 conditions per place. [2022-11-16 11:05:32,459 INFO L137 encePairwiseOnDemand]: 114/128 looper letters, 1043 selfloop transitions, 29 changer transitions 0/1157 dead transitions. [2022-11-16 11:05:32,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1157 transitions, 10299 flow [2022-11-16 11:05:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:05:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:05:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1162 transitions. [2022-11-16 11:05:32,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2022-11-16 11:05:32,463 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1162 transitions. [2022-11-16 11:05:32,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1162 transitions. [2022-11-16 11:05:32,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:32,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1162 transitions. [2022-11-16 11:05:32,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,473 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,473 INFO L175 Difference]: Start difference. First operand has 253 places, 369 transitions, 2472 flow. Second operand 14 states and 1162 transitions. [2022-11-16 11:05:32,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 1157 transitions, 10299 flow [2022-11-16 11:05:32,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 1157 transitions, 10211 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:32,684 INFO L231 Difference]: Finished difference. Result has 270 places, 387 transitions, 2719 flow [2022-11-16 11:05:32,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2719, PETRI_PLACES=270, PETRI_TRANSITIONS=387} [2022-11-16 11:05:32,685 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 145 predicate places. [2022-11-16 11:05:32,685 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 387 transitions, 2719 flow [2022-11-16 11:05:32,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:32,686 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:32,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:32,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:05:32,892 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:32,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:32,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1227019495, now seen corresponding path program 3 times [2022-11-16 11:05:32,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:32,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877183542] [2022-11-16 11:05:32,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:05:33,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:33,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877183542] [2022-11-16 11:05:33,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877183542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:33,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373641609] [2022-11-16 11:05:33,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:05:33,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:33,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:33,820 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:33,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:05:33,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 11:05:33,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:33,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:05:33,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:34,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:05:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:34,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:34,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373641609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:34,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:34,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:05:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407649806] [2022-11-16 11:05:34,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:34,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:34,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:34,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:34,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-16 11:05:34,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 387 transitions, 2719 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:34,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:34,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-16 11:05:34,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:42,665 INFO L130 PetriNetUnfolder]: 10747/27656 cut-off events. [2022-11-16 11:05:42,665 INFO L131 PetriNetUnfolder]: For 70540/70576 co-relation queries the response was YES. [2022-11-16 11:05:42,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94826 conditions, 27656 events. 10747/27656 cut-off events. For 70540/70576 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 259681 event pairs, 3362 based on Foata normal form. 28/27131 useless extension candidates. Maximal degree in co-relation 94764. Up to 10481 conditions per place. [2022-11-16 11:05:43,119 INFO L137 encePairwiseOnDemand]: 114/128 looper letters, 1014 selfloop transitions, 38 changer transitions 0/1137 dead transitions. [2022-11-16 11:05:43,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1137 transitions, 10164 flow [2022-11-16 11:05:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:05:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:05:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1203 transitions. [2022-11-16 11:05:43,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6713169642857143 [2022-11-16 11:05:43,123 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1203 transitions. [2022-11-16 11:05:43,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1203 transitions. [2022-11-16 11:05:43,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:43,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1203 transitions. [2022-11-16 11:05:43,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 85.92857142857143) internal successors, (1203), 14 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,132 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,132 INFO L175 Difference]: Start difference. First operand has 270 places, 387 transitions, 2719 flow. Second operand 14 states and 1203 transitions. [2022-11-16 11:05:43,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1137 transitions, 10164 flow [2022-11-16 11:05:43,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 1137 transitions, 10051 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-16 11:05:43,674 INFO L231 Difference]: Finished difference. Result has 286 places, 405 transitions, 3002 flow [2022-11-16 11:05:43,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3002, PETRI_PLACES=286, PETRI_TRANSITIONS=405} [2022-11-16 11:05:43,675 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 161 predicate places. [2022-11-16 11:05:43,675 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 405 transitions, 3002 flow [2022-11-16 11:05:43,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:43,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:43,676 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:43,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:43,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:05:43,884 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1731870016, now seen corresponding path program 2 times [2022-11-16 11:05:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:43,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664748528] [2022-11-16 11:05:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:05:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664748528] [2022-11-16 11:05:44,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664748528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311172400] [2022-11-16 11:05:44,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:05:44,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:44,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:44,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:44,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:05:44,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:05:44,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:44,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:05:44,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:45,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:05:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:45,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:45,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311172400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:45,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:45,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:05:45,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579346029] [2022-11-16 11:05:45,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:45,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:45,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:45,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:45,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:45,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-16 11:05:45,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 405 transitions, 3002 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:45,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:45,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-16 11:05:45,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:54,902 INFO L130 PetriNetUnfolder]: 12502/32387 cut-off events. [2022-11-16 11:05:54,902 INFO L131 PetriNetUnfolder]: For 99562/99613 co-relation queries the response was YES. [2022-11-16 11:05:55,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113500 conditions, 32387 events. 12502/32387 cut-off events. For 99562/99613 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 313875 event pairs, 3536 based on Foata normal form. 33/31731 useless extension candidates. Maximal degree in co-relation 113429. Up to 8192 conditions per place. [2022-11-16 11:05:55,361 INFO L137 encePairwiseOnDemand]: 114/128 looper letters, 1254 selfloop transitions, 41 changer transitions 0/1380 dead transitions. [2022-11-16 11:05:55,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1380 transitions, 12999 flow [2022-11-16 11:05:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:05:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:05:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1195 transitions. [2022-11-16 11:05:55,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6668526785714286 [2022-11-16 11:05:55,365 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1195 transitions. [2022-11-16 11:05:55,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1195 transitions. [2022-11-16 11:05:55,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:55,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1195 transitions. [2022-11-16 11:05:55,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 85.35714285714286) internal successors, (1195), 14 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:55,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:55,372 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 128.0) internal successors, (1920), 15 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:55,372 INFO L175 Difference]: Start difference. First operand has 286 places, 405 transitions, 3002 flow. Second operand 14 states and 1195 transitions. [2022-11-16 11:05:55,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1380 transitions, 12999 flow [2022-11-16 11:05:55,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1380 transitions, 12875 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-11-16 11:05:55,710 INFO L231 Difference]: Finished difference. Result has 300 places, 426 transitions, 3396 flow [2022-11-16 11:05:55,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3396, PETRI_PLACES=300, PETRI_TRANSITIONS=426} [2022-11-16 11:05:55,711 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 175 predicate places. [2022-11-16 11:05:55,711 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 426 transitions, 3396 flow [2022-11-16 11:05:55,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:55,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:55,711 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:55,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:55,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:05:55,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-11-16 11:05:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1716423809, now seen corresponding path program 4 times [2022-11-16 11:05:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:55,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146074108] [2022-11-16 11:05:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:55,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 11:05:57,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:57,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146074108] [2022-11-16 11:05:57,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146074108] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:57,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509744412] [2022-11-16 11:05:57,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:05:57,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:57,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:57,044 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:57,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abd5a36f-40e6-4f08-a2e1-bf4d3c662de3/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:05:57,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:05:57,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:57,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:05:57,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:57,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 11:05:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-11-16 11:05:57,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:57,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509744412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:57,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:57,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-16 11:05:57,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915747597] [2022-11-16 11:05:57,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:57,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:05:57,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:57,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:05:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:57,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 128 [2022-11-16 11:05:57,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 426 transitions, 3396 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:57,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:57,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 128 [2022-11-16 11:05:57,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand