./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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-38b53e6 [2022-11-25 17:53:15,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:53:15,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:53:15,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:53:15,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:53:15,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:53:15,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:53:15,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:53:15,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:53:15,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:53:15,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:53:15,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:53:15,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:53:15,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:53:15,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:53:15,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:53:15,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:53:15,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:53:15,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:53:15,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:53:15,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:53:15,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:53:15,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:53:15,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:53:15,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:53:15,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:53:15,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:53:15,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:53:15,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:53:15,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:53:15,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:53:15,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:53:15,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:53:15,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:53:15,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:53:15,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:53:15,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:53:15,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:53:15,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:53:15,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:53:15,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:53:15,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:53:15,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:53:15,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:53:15,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:53:15,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:53:15,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:53:15,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:53:15,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:53:15,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:53:15,245 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:53:15,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:53:15,246 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:53:15,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:53:15,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:53:15,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:53:15,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:53:15,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:53:15,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:53:15,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:53:15,248 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:53:15,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:53:15,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:53:15,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:53:15,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:53:15,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:53:15,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:53:15,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:53:15,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:53:15,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:53:15,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:53:15,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:53:15,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:53:15,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:53:15,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:53:15,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:53:15,252 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:53:15,252 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:53:15,253 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-11-25 17:53:15,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:53:15,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:53:15,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:53:15,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:53:15,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:53:15,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-25 17:53:19,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:53:19,877 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:53:19,878 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-25 17:53:19,888 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/data/55d9d2d9e/0d16a8174b38497b92b2a35002afbf44/FLAG888723910 [2022-11-25 17:53:19,908 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/data/55d9d2d9e/0d16a8174b38497b92b2a35002afbf44 [2022-11-25 17:53:19,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:53:19,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:53:19,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:53:19,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:53:19,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:53:19,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:53:19" (1/1) ... [2022-11-25 17:53:19,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f9535a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:19, skipping insertion in model container [2022-11-25 17:53:19,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:53:19" (1/1) ... [2022-11-25 17:53:19,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:53:19,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:53:20,299 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-25 17:53:20,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:53:20,330 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:53:20,395 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-25 17:53:20,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:53:20,423 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:53:20,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20 WrapperNode [2022-11-25 17:53:20,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:53:20,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:53:20,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:53:20,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:53:20,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,511 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 854 [2022-11-25 17:53:20,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:53:20,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:53:20,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:53:20,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:53:20,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,599 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:53:20,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:53:20,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:53:20,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:53:20,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (1/1) ... [2022-11-25 17:53:20,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:53:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:53:20,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:53:20,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:53:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:53:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:53:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:53:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:53:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:53:20,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:53:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:53:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:53:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:53:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:53:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:53:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:53:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:53:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:53:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:53:20,740 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:53:20,996 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:53:20,999 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:53:22,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:53:22,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:53:22,697 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:53:22,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:53:22 BoogieIcfgContainer [2022-11-25 17:53:22,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:53:22,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:53:22,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:53:22,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:53:22,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:53:19" (1/3) ... [2022-11-25 17:53:22,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5288c774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:53:22, skipping insertion in model container [2022-11-25 17:53:22,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:20" (2/3) ... [2022-11-25 17:53:22,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5288c774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:53:22, skipping insertion in model container [2022-11-25 17:53:22,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:53:22" (3/3) ... [2022-11-25 17:53:22,728 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-11-25 17:53:22,746 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:53:22,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:53:22,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 154 error locations. [2022-11-25 17:53:22,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:53:23,073 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:53:23,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1069 places, 1117 transitions, 2258 flow [2022-11-25 17:53:24,205 INFO L130 PetriNetUnfolder]: 58/1114 cut-off events. [2022-11-25 17:53:24,205 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:53:24,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 1114 events. 58/1114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3917 event pairs, 0 based on Foata normal form. 0/902 useless extension candidates. Maximal degree in co-relation 851. Up to 2 conditions per place. [2022-11-25 17:53:24,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 1069 places, 1117 transitions, 2258 flow [2022-11-25 17:53:24,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1043 places, 1088 transitions, 2194 flow [2022-11-25 17:53:24,330 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:53:24,368 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1043 places, 1088 transitions, 2194 flow [2022-11-25 17:53:24,374 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1043 places, 1088 transitions, 2194 flow [2022-11-25 17:53:24,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1043 places, 1088 transitions, 2194 flow [2022-11-25 17:53:25,204 INFO L130 PetriNetUnfolder]: 55/1088 cut-off events. [2022-11-25 17:53:25,204 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:53:25,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 1088 events. 55/1088 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3884 event pairs, 0 based on Foata normal form. 0/880 useless extension candidates. Maximal degree in co-relation 851. Up to 2 conditions per place. [2022-11-25 17:53:25,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 489912 [2022-11-25 17:54:20,736 INFO L134 LiptonReduction]: Checked pairs total: 905113 [2022-11-25 17:54:20,736 INFO L136 LiptonReduction]: Total number of compositions: 1720 [2022-11-25 17:54:20,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:54:20,766 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;@303e752a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:54:20,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 286 error locations. [2022-11-25 17:54:20,769 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:54:20,769 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:54:20,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:20,771 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:54:20,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 282 more)] === [2022-11-25 17:54:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash 4759, now seen corresponding path program 1 times [2022-11-25 17:54:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:20,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361489170] [2022-11-25 17:54:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:20,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:20,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:20,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361489170] [2022-11-25 17:54:20,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361489170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:20,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:20,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:54:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818135269] [2022-11-25 17:54:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:20,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:54:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:54:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:54:20,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1091 out of 2837 [2022-11-25 17:54:21,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 251 transitions, 520 flow. Second operand has 2 states, 2 states have (on average 1091.5) internal successors, (2183), 2 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:21,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:21,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1091 of 2837 [2022-11-25 17:54:21,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:33,134 INFO L130 PetriNetUnfolder]: 59291/83674 cut-off events. [2022-11-25 17:54:33,135 INFO L131 PetriNetUnfolder]: For 1464/1998 co-relation queries the response was YES. [2022-11-25 17:54:33,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163208 conditions, 83674 events. 59291/83674 cut-off events. For 1464/1998 co-relation queries the response was YES. Maximal size of possible extension queue 2501. Compared 574927 event pairs, 46886 based on Foata normal form. 1/69531 useless extension candidates. Maximal degree in co-relation 154766. Up to 78501 conditions per place. [2022-11-25 17:54:33,831 INFO L137 encePairwiseOnDemand]: 2691/2837 looper letters, 79 selfloop transitions, 0 changer transitions 1/105 dead transitions. [2022-11-25 17:54:33,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 105 transitions, 388 flow [2022-11-25 17:54:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:54:33,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:54:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2408 transitions. [2022-11-25 17:54:34,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.424391963341558 [2022-11-25 17:54:34,032 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2408 transitions. [2022-11-25 17:54:34,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2408 transitions. [2022-11-25 17:54:34,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:34,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2408 transitions. [2022-11-25 17:54:34,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1204.0) internal successors, (2408), 2 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:34,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 2837.0) internal successors, (8511), 3 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:34,091 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 2837.0) internal successors, (8511), 3 states have internal predecessors, (8511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:34,094 INFO L175 Difference]: Start difference. First operand has 248 places, 251 transitions, 520 flow. Second operand 2 states and 2408 transitions. [2022-11-25 17:54:34,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 105 transitions, 388 flow [2022-11-25 17:54:34,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 376 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:54:34,122 INFO L231 Difference]: Finished difference. Result has 97 places, 104 transitions, 213 flow [2022-11-25 17:54:34,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2837, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=213, PETRI_PLACES=97, PETRI_TRANSITIONS=104} [2022-11-25 17:54:34,130 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -151 predicate places. [2022-11-25 17:54:34,130 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 104 transitions, 213 flow [2022-11-25 17:54:34,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1091.5) internal successors, (2183), 2 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:34,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:34,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:54:34,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:54:34,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err42ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 282 more)] === [2022-11-25 17:54:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1220792747, now seen corresponding path program 1 times [2022-11-25 17:54:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:34,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30060144] [2022-11-25 17:54:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:34,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:34,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30060144] [2022-11-25 17:54:34,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30060144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:34,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:34,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:54:34,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630083519] [2022-11-25 17:54:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:54:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:54:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:54:34,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1077 out of 2837 [2022-11-25 17:54:34,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 104 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 1080.3333333333333) internal successors, (3241), 3 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:34,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:34,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1077 of 2837 [2022-11-25 17:54:34,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:44,358 INFO L130 PetriNetUnfolder]: 59291/83407 cut-off events. [2022-11-25 17:54:44,358 INFO L131 PetriNetUnfolder]: For 342/694 co-relation queries the response was YES. [2022-11-25 17:54:44,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162252 conditions, 83407 events. 59291/83407 cut-off events. For 342/694 co-relation queries the response was YES. Maximal size of possible extension queue 2487. Compared 573027 event pairs, 44330 based on Foata normal form. 3/69261 useless extension candidates. Maximal degree in co-relation 162249. Up to 73484 conditions per place. [2022-11-25 17:54:44,845 INFO L137 encePairwiseOnDemand]: 2833/2837 looper letters, 124 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2022-11-25 17:54:44,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 151 transitions, 563 flow [2022-11-25 17:54:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:54:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:54:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3359 transitions. [2022-11-25 17:54:44,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.394665726706615 [2022-11-25 17:54:44,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3359 transitions. [2022-11-25 17:54:44,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3359 transitions. [2022-11-25 17:54:44,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:44,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3359 transitions. [2022-11-25 17:54:44,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1119.6666666666667) internal successors, (3359), 3 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:44,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2837.0) internal successors, (11348), 4 states have internal predecessors, (11348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:44,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2837.0) internal successors, (11348), 4 states have internal predecessors, (11348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:44,903 INFO L175 Difference]: Start difference. First operand has 97 places, 104 transitions, 213 flow. Second operand 3 states and 3359 transitions. [2022-11-25 17:54:44,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 151 transitions, 563 flow [2022-11-25 17:54:44,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 563 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:54:44,911 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 217 flow [2022-11-25 17:54:44,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2837, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=217, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2022-11-25 17:54:44,913 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -151 predicate places. [2022-11-25 17:54:44,913 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 217 flow [2022-11-25 17:54:44,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1080.3333333333333) internal successors, (3241), 3 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:44,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:44,917 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:54:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:54:44,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 282 more)] === [2022-11-25 17:54:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash -166706118, now seen corresponding path program 1 times [2022-11-25 17:54:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:44,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680243198] [2022-11-25 17:54:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:44,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:45,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:45,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680243198] [2022-11-25 17:54:45,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680243198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:54:45,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:54:45,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:54:45,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150478411] [2022-11-25 17:54:45,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:54:45,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:54:45,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:45,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:54:45,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:54:45,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1087 out of 2837 [2022-11-25 17:54:45,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 1090.0) internal successors, (3270), 3 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:45,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:45,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1087 of 2837 [2022-11-25 17:54:45,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:54:54,731 INFO L130 PetriNetUnfolder]: 59291/83640 cut-off events. [2022-11-25 17:54:54,732 INFO L131 PetriNetUnfolder]: For 3267/3801 co-relation queries the response was YES. [2022-11-25 17:54:54,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165517 conditions, 83640 events. 59291/83640 cut-off events. For 3267/3801 co-relation queries the response was YES. Maximal size of possible extension queue 2501. Compared 574310 event pairs, 46886 based on Foata normal form. 0/70506 useless extension candidates. Maximal degree in co-relation 165513. Up to 78500 conditions per place. [2022-11-25 17:54:55,324 INFO L137 encePairwiseOnDemand]: 2834/2837 looper letters, 78 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2022-11-25 17:54:55,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 104 transitions, 379 flow [2022-11-25 17:54:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:54:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:54:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3342 transitions. [2022-11-25 17:54:55,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39266831159675714 [2022-11-25 17:54:55,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3342 transitions. [2022-11-25 17:54:55,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3342 transitions. [2022-11-25 17:54:55,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:54:55,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3342 transitions. [2022-11-25 17:54:55,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1114.0) internal successors, (3342), 3 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:55,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2837.0) internal successors, (11348), 4 states have internal predecessors, (11348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:55,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2837.0) internal successors, (11348), 4 states have internal predecessors, (11348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:55,387 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 217 flow. Second operand 3 states and 3342 transitions. [2022-11-25 17:54:55,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 104 transitions, 379 flow [2022-11-25 17:54:55,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:54:55,488 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 223 flow [2022-11-25 17:54:55,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2837, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2022-11-25 17:54:55,490 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -150 predicate places. [2022-11-25 17:54:55,491 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 223 flow [2022-11-25 17:54:55,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1090.0) internal successors, (3270), 3 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:55,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:54:55,493 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:54:55,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:54:55,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 282 more)] === [2022-11-25 17:54:55,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:54:55,495 INFO L85 PathProgramCache]: Analyzing trace with hash 695228170, now seen corresponding path program 1 times [2022-11-25 17:54:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:54:55,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461071091] [2022-11-25 17:54:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:55,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:54:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:55,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:54:55,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461071091] [2022-11-25 17:54:55,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461071091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:54:55,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485941169] [2022-11-25 17:54:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:54:55,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:54:55,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:55,744 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:54:55,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:54:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:54:56,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:54:56,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:54:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:56,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:54:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:54:56,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485941169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:54:56,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:54:56,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:54:56,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957113188] [2022-11-25 17:54:56,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:54:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:54:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:54:56,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:54:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:54:56,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1085 out of 2837 [2022-11-25 17:54:56,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 1087.2857142857142) internal successors, (7611), 7 states have internal predecessors, (7611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:54:56,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:54:56,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1085 of 2837 [2022-11-25 17:54:56,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:06,552 INFO L130 PetriNetUnfolder]: 59291/83642 cut-off events. [2022-11-25 17:55:06,552 INFO L131 PetriNetUnfolder]: For 339/873 co-relation queries the response was YES. [2022-11-25 17:55:06,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162499 conditions, 83642 events. 59291/83642 cut-off events. For 339/873 co-relation queries the response was YES. Maximal size of possible extension queue 2501. Compared 574467 event pairs, 46886 based on Foata normal form. 0/69498 useless extension candidates. Maximal degree in co-relation 162494. Up to 78500 conditions per place. [2022-11-25 17:55:07,047 INFO L137 encePairwiseOnDemand]: 2834/2837 looper letters, 78 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2022-11-25 17:55:07,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 106 transitions, 395 flow [2022-11-25 17:55:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:55:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:55:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5509 transitions. [2022-11-25 17:55:07,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38836799436023967 [2022-11-25 17:55:07,069 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 5509 transitions. [2022-11-25 17:55:07,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 5509 transitions. [2022-11-25 17:55:07,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:07,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 5509 transitions. [2022-11-25 17:55:07,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 1101.8) internal successors, (5509), 5 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 2837.0) internal successors, (17022), 6 states have internal predecessors, (17022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 2837.0) internal successors, (17022), 6 states have internal predecessors, (17022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,130 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 223 flow. Second operand 5 states and 5509 transitions. [2022-11-25 17:55:07,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 106 transitions, 395 flow [2022-11-25 17:55:07,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 391 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:07,134 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 245 flow [2022-11-25 17:55:07,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2837, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2022-11-25 17:55:07,137 INFO L288 CegarLoopForPetriNet]: 248 programPoint places, -145 predicate places. [2022-11-25 17:55:07,138 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 245 flow [2022-11-25 17:55:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1087.2857142857142) internal successors, (7611), 7 states have internal predecessors, (7611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:07,141 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:07,141 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:07,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:55:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9d4ca5-f6cd-4f74-b52e-b076fd1a94be/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:55:07,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 282 more)] === [2022-11-25 17:55:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1035549962, now seen corresponding path program 2 times [2022-11-25 17:55:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:07,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659548616] [2022-11-25 17:55:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:07,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:55:07,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659548616] [2022-11-25 17:55:07,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659548616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:07,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:07,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:55:07,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250902314] [2022-11-25 17:55:07,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:07,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:55:07,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:55:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:55:08,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1080 out of 2837 [2022-11-25 17:55:08,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 1082.4) internal successors, (5412), 5 states have internal predecessors, (5412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:08,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:08,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1080 of 2837 [2022-11-25 17:55:08,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand