./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:41:55,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:55,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:55,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:55,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:55,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:55,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:55,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:55,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:55,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:55,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:55,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:55,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:55,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:55,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:55,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:55,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:55,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:55,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:55,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:55,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:55,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:55,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:55,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:55,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:55,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:55,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:55,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:55,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:55,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:55,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:55,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:55,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:55,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:55,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:55,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:55,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:55,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:55,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:55,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:55,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:55,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:41:55,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:55,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:55,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:55,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:55,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:55,996 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:55,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:55,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:55,998 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:55,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:56,000 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:56,000 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:41:56,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:56,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:56,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:56,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:56,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:56,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:56,001 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:41:56,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:56,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:56,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:56,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:56,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:56,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:56,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:56,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:56,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:56,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:56,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:56,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:56,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:56,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:41:56,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:41:56,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:56,010 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_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-11-02 20:41:56,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:56,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:56,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:56,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:56,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:56,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-02 20:41:56,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/data/e50a01ff9/c24d679fcbcc4844a8cef2dbc5d8f50c/FLAGdf3370b11 [2022-11-02 20:41:56,976 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:56,977 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-02 20:41:56,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/data/e50a01ff9/c24d679fcbcc4844a8cef2dbc5d8f50c/FLAGdf3370b11 [2022-11-02 20:41:57,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/data/e50a01ff9/c24d679fcbcc4844a8cef2dbc5d8f50c [2022-11-02 20:41:57,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:57,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:57,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:57,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:57,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:57,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:57" (1/1) ... [2022-11-02 20:41:57,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32dcaedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:57, skipping insertion in model container [2022-11-02 20:41:57,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:57" (1/1) ... [2022-11-02 20:41:57,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:57,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:57,919 WARN L230 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_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-02 20:41:57,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:57,962 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:58,010 WARN L230 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_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-02 20:41:58,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:58,065 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:58,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58 WrapperNode [2022-11-02 20:41:58,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:58,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:58,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:58,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:58,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,148 INFO L138 Inliner]: procedures = 270, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2022-11-02 20:41:58,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:58,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:58,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:58,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:58,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:58,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:58,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:58,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:58,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (1/1) ... [2022-11-02 20:41:58,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:58,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:58,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:41:58,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:41:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:41:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:41:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:41:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:58,294 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-02 20:41:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-02 20:41:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:58,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:58,297 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:41:58,493 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:58,495 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:58,786 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:58,794 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:58,794 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-02 20:41:58,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:58 BoogieIcfgContainer [2022-11-02 20:41:58,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:58,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:58,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:58,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:58,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:57" (1/3) ... [2022-11-02 20:41:58,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8a7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:58, skipping insertion in model container [2022-11-02 20:41:58,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:58" (2/3) ... [2022-11-02 20:41:58,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c8a7c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:58, skipping insertion in model container [2022-11-02 20:41:58,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:58" (3/3) ... [2022-11-02 20:41:58,806 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-11-02 20:41:58,815 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:41:58,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:58,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 20:41:58,826 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:41:58,887 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:41:58,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 153 transitions, 314 flow [2022-11-02 20:41:58,994 INFO L130 PetriNetUnfolder]: 23/206 cut-off events. [2022-11-02 20:41:58,994 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:41:59,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 206 events. 23/206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-11-02 20:41:59,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 153 transitions, 314 flow [2022-11-02 20:41:59,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 153 transitions, 314 flow [2022-11-02 20:41:59,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:59,024 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;@10ddad6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:59,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-02 20:41:59,043 INFO L130 PetriNetUnfolder]: 5/81 cut-off events. [2022-11-02 20:41:59,043 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:41:59,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:59,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:59,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-02 20:41:59,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:59,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1071659143, now seen corresponding path program 1 times [2022-11-02 20:41:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:59,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936158100] [2022-11-02 20:41:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:59,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:59,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936158100] [2022-11-02 20:41:59,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936158100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:59,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:59,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947845360] [2022-11-02 20:41:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:59,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:59,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:59,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:59,529 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 153 [2022-11-02 20:41:59,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 153 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:59,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 153 [2022-11-02 20:41:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:59,603 INFO L130 PetriNetUnfolder]: 3/160 cut-off events. [2022-11-02 20:41:59,603 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-02 20:41:59,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 160 events. 3/160 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 220 event pairs, 0 based on Foata normal form. 25/171 useless extension candidates. Maximal degree in co-relation 95. Up to 7 conditions per place. [2022-11-02 20:41:59,606 INFO L137 encePairwiseOnDemand]: 139/153 looper letters, 9 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2022-11-02 20:41:59,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 143 transitions, 316 flow [2022-11-02 20:41:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:41:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2022-11-02 20:41:59,621 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9281045751633987 [2022-11-02 20:41:59,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2022-11-02 20:41:59,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2022-11-02 20:41:59,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:59,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2022-11-02 20:41:59,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,640 INFO L175 Difference]: Start difference. First operand has 141 places, 153 transitions, 314 flow. Second operand 3 states and 426 transitions. [2022-11-02 20:41:59,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 143 transitions, 316 flow [2022-11-02 20:41:59,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 143 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:41:59,650 INFO L231 Difference]: Finished difference. Result has 143 places, 141 transitions, 298 flow [2022-11-02 20:41:59,652 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=143, PETRI_TRANSITIONS=141} [2022-11-02 20:41:59,656 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 2 predicate places. [2022-11-02 20:41:59,656 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 141 transitions, 298 flow [2022-11-02 20:41:59,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:59,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:59,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:59,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-02 20:41:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1071810163, now seen corresponding path program 1 times [2022-11-02 20:41:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:59,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387428891] [2022-11-02 20:41:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:59,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:59,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387428891] [2022-11-02 20:41:59,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387428891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:59,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:59,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:41:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109178279] [2022-11-02 20:41:59,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:59,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:59,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:59,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:59,823 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 153 [2022-11-02 20:41:59,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 141 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:59,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:59,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 153 [2022-11-02 20:41:59,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:59,988 INFO L130 PetriNetUnfolder]: 42/576 cut-off events. [2022-11-02 20:41:59,989 INFO L131 PetriNetUnfolder]: For 17/22 co-relation queries the response was YES. [2022-11-02 20:41:59,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 576 events. 42/576 cut-off events. For 17/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2882 event pairs, 8 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 612. Up to 53 conditions per place. [2022-11-02 20:41:59,997 INFO L137 encePairwiseOnDemand]: 144/153 looper letters, 18 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2022-11-02 20:41:59,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 148 transitions, 363 flow [2022-11-02 20:41:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-02 20:42:00,004 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.869281045751634 [2022-11-02 20:42:00,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-02 20:42:00,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-02 20:42:00,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:00,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-02 20:42:00,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,010 INFO L175 Difference]: Start difference. First operand has 143 places, 141 transitions, 298 flow. Second operand 3 states and 399 transitions. [2022-11-02 20:42:00,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 148 transitions, 363 flow [2022-11-02 20:42:00,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 148 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:42:00,015 INFO L231 Difference]: Finished difference. Result has 143 places, 143 transitions, 332 flow [2022-11-02 20:42:00,015 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2022-11-02 20:42:00,016 INFO L287 CegarLoopForPetriNet]: 141 programPoint places, 2 predicate places. [2022-11-02 20:42:00,016 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 332 flow [2022-11-02 20:42:00,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:00,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:00,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:42:00,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-02 20:42:00,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash -481637487, now seen corresponding path program 1 times [2022-11-02 20:42:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:00,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817138843] [2022-11-02 20:42:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:00,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:00,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:00,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:42:00,093 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:42:00,094 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-02 20:42:00,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-02 20:42:00,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-02 20:42:00,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-02 20:42:00,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-02 20:42:00,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-02 20:42:00,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-02 20:42:00,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-02 20:42:00,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-02 20:42:00,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-02 20:42:00,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-02 20:42:00,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:42:00,099 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-02 20:42:00,102 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:42:00,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:42:00,132 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:42:00,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 199 transitions, 416 flow [2022-11-02 20:42:00,193 INFO L130 PetriNetUnfolder]: 40/336 cut-off events. [2022-11-02 20:42:00,193 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:42:00,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 336 events. 40/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1145 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 208. Up to 9 conditions per place. [2022-11-02 20:42:00,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 199 transitions, 416 flow [2022-11-02 20:42:00,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 199 transitions, 416 flow [2022-11-02 20:42:00,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:00,203 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;@10ddad6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:00,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-02 20:42:00,212 INFO L130 PetriNetUnfolder]: 5/75 cut-off events. [2022-11-02 20:42:00,212 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:42:00,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:00,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:00,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:42:00,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash -367377793, now seen corresponding path program 1 times [2022-11-02 20:42:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:00,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803533883] [2022-11-02 20:42:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:00,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:00,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:00,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803533883] [2022-11-02 20:42:00,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803533883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:00,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:00,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676722035] [2022-11-02 20:42:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:42:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:42:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:42:00,255 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 199 [2022-11-02 20:42:00,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 199 transitions, 416 flow. Second operand has 2 states, 2 states have (on average 177.5) internal successors, (355), 2 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) [2022-11-02 20:42:00,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:00,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 199 [2022-11-02 20:42:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:00,320 INFO L130 PetriNetUnfolder]: 12/305 cut-off events. [2022-11-02 20:42:00,321 INFO L131 PetriNetUnfolder]: For 21/29 co-relation queries the response was YES. [2022-11-02 20:42:00,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 305 events. 12/305 cut-off events. For 21/29 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 929 event pairs, 0 based on Foata normal form. 42/312 useless extension candidates. Maximal degree in co-relation 192. Up to 7 conditions per place. [2022-11-02 20:42:00,342 INFO L137 encePairwiseOnDemand]: 182/199 looper letters, 4 selfloop transitions, 0 changer transitions 0/181 dead transitions. [2022-11-02 20:42:00,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 388 flow [2022-11-02 20:42:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:42:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:42:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 375 transitions. [2022-11-02 20:42:00,353 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9422110552763819 [2022-11-02 20:42:00,353 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 375 transitions. [2022-11-02 20:42:00,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 375 transitions. [2022-11-02 20:42:00,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:00,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 375 transitions. [2022-11-02 20:42:00,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 187.5) internal successors, (375), 2 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,359 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,359 INFO L175 Difference]: Start difference. First operand has 182 places, 199 transitions, 416 flow. Second operand 2 states and 375 transitions. [2022-11-02 20:42:00,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 388 flow [2022-11-02 20:42:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 181 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:42:00,367 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 380 flow [2022-11-02 20:42:00,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=380, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2022-11-02 20:42:00,371 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 0 predicate places. [2022-11-02 20:42:00,371 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 380 flow [2022-11-02 20:42:00,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 177.5) internal successors, (355), 2 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) [2022-11-02 20:42:00,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:00,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:00,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:42:00,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:42:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2120135040, now seen corresponding path program 1 times [2022-11-02 20:42:00,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:00,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434400431] [2022-11-02 20:42:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:00,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:00,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434400431] [2022-11-02 20:42:00,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434400431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:00,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:00,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:00,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628428461] [2022-11-02 20:42:00,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:00,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:00,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:00,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:00,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:00,509 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 199 [2022-11-02 20:42:00,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:00,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 199 [2022-11-02 20:42:00,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:00,610 INFO L130 PetriNetUnfolder]: 8/277 cut-off events. [2022-11-02 20:42:00,610 INFO L131 PetriNetUnfolder]: For 31/89 co-relation queries the response was YES. [2022-11-02 20:42:00,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 277 events. 8/277 cut-off events. For 31/89 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 767 event pairs, 0 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 308. Up to 16 conditions per place. [2022-11-02 20:42:00,613 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 13 selfloop transitions, 2 changer transitions 0/185 dead transitions. [2022-11-02 20:42:00,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 185 transitions, 418 flow [2022-11-02 20:42:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-11-02 20:42:00,616 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.88107202680067 [2022-11-02 20:42:00,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-11-02 20:42:00,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-11-02 20:42:00,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:00,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-11-02 20:42:00,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,622 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 380 flow. Second operand 3 states and 526 transitions. [2022-11-02 20:42:00,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 185 transitions, 418 flow [2022-11-02 20:42:00,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 185 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:42:00,630 INFO L231 Difference]: Finished difference. Result has 185 places, 182 transitions, 392 flow [2022-11-02 20:42:00,631 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=185, PETRI_TRANSITIONS=182} [2022-11-02 20:42:00,633 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 3 predicate places. [2022-11-02 20:42:00,633 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 182 transitions, 392 flow [2022-11-02 20:42:00,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:00,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:00,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:42:00,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:42:00,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1923443200, now seen corresponding path program 1 times [2022-11-02 20:42:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:00,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409640487] [2022-11-02 20:42:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:00,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:00,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409640487] [2022-11-02 20:42:00,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409640487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:00,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:00,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410780991] [2022-11-02 20:42:00,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:00,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:00,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:00,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:00,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 199 [2022-11-02 20:42:00,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 182 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:00,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 199 [2022-11-02 20:42:00,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:02,448 INFO L130 PetriNetUnfolder]: 1530/8076 cut-off events. [2022-11-02 20:42:02,448 INFO L131 PetriNetUnfolder]: For 419/606 co-relation queries the response was YES. [2022-11-02 20:42:02,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10667 conditions, 8076 events. 1530/8076 cut-off events. For 419/606 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 88441 event pairs, 513 based on Foata normal form. 9/6872 useless extension candidates. Maximal degree in co-relation 10660. Up to 1422 conditions per place. [2022-11-02 20:42:02,560 INFO L137 encePairwiseOnDemand]: 180/199 looper letters, 42 selfloop transitions, 14 changer transitions 0/207 dead transitions. [2022-11-02 20:42:02,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 207 transitions, 565 flow [2022-11-02 20:42:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2022-11-02 20:42:02,563 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8559463986599665 [2022-11-02 20:42:02,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2022-11-02 20:42:02,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2022-11-02 20:42:02,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:02,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2022-11-02 20:42:02,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,568 INFO L175 Difference]: Start difference. First operand has 185 places, 182 transitions, 392 flow. Second operand 3 states and 511 transitions. [2022-11-02 20:42:02,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 207 transitions, 565 flow [2022-11-02 20:42:02,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 207 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:42:02,574 INFO L231 Difference]: Finished difference. Result has 188 places, 196 transitions, 512 flow [2022-11-02 20:42:02,575 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=188, PETRI_TRANSITIONS=196} [2022-11-02 20:42:02,576 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 6 predicate places. [2022-11-02 20:42:02,576 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 196 transitions, 512 flow [2022-11-02 20:42:02,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:02,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:02,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:42:02,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:42:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash -720752016, now seen corresponding path program 1 times [2022-11-02 20:42:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:02,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675580736] [2022-11-02 20:42:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:02,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:02,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:02,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675580736] [2022-11-02 20:42:02,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675580736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:02,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:02,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880295629] [2022-11-02 20:42:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:02,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:02,627 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 199 [2022-11-02 20:42:02,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 196 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:02,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:02,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 199 [2022-11-02 20:42:02,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:04,306 INFO L130 PetriNetUnfolder]: 1847/8742 cut-off events. [2022-11-02 20:42:04,306 INFO L131 PetriNetUnfolder]: For 2864/3359 co-relation queries the response was YES. [2022-11-02 20:42:04,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14581 conditions, 8742 events. 1847/8742 cut-off events. For 2864/3359 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 95396 event pairs, 791 based on Foata normal form. 17/7807 useless extension candidates. Maximal degree in co-relation 14573. Up to 2654 conditions per place. [2022-11-02 20:42:04,397 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 60 selfloop transitions, 14 changer transitions 0/223 dead transitions. [2022-11-02 20:42:04,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 223 transitions, 776 flow [2022-11-02 20:42:04,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-11-02 20:42:04,405 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8324958123953099 [2022-11-02 20:42:04,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-11-02 20:42:04,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-11-02 20:42:04,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:04,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-11-02 20:42:04,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 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) [2022-11-02 20:42:04,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,410 INFO L175 Difference]: Start difference. First operand has 188 places, 196 transitions, 512 flow. Second operand 3 states and 497 transitions. [2022-11-02 20:42:04,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 223 transitions, 776 flow [2022-11-02 20:42:04,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 223 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:42:04,424 INFO L231 Difference]: Finished difference. Result has 190 places, 208 transitions, 610 flow [2022-11-02 20:42:04,425 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=190, PETRI_TRANSITIONS=208} [2022-11-02 20:42:04,426 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 8 predicate places. [2022-11-02 20:42:04,426 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 208 transitions, 610 flow [2022-11-02 20:42:04,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:04,427 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:04,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:42:04,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:42:04,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:04,428 INFO L85 PathProgramCache]: Analyzing trace with hash -241828212, now seen corresponding path program 1 times [2022-11-02 20:42:04,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:04,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605083637] [2022-11-02 20:42:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:04,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:04,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:04,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:42:04,470 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:42:04,470 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-02 20:42:04,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-02 20:42:04,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-02 20:42:04,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-02 20:42:04,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-02 20:42:04,471 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-02 20:42:04,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-02 20:42:04,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-02 20:42:04,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-02 20:42:04,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-02 20:42:04,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-02 20:42:04,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-02 20:42:04,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-02 20:42:04,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-02 20:42:04,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-02 20:42:04,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:42:04,474 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-02 20:42:04,474 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:42:04,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:42:04,503 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:42:04,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 245 transitions, 520 flow [2022-11-02 20:42:04,600 INFO L130 PetriNetUnfolder]: 62/511 cut-off events. [2022-11-02 20:42:04,600 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:42:04,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 511 events. 62/511 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1928 event pairs, 1 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 344. Up to 16 conditions per place. [2022-11-02 20:42:04,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 245 transitions, 520 flow [2022-11-02 20:42:04,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 245 transitions, 520 flow [2022-11-02 20:42:04,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:04,614 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;@10ddad6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:04,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-02 20:42:04,621 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-02 20:42:04,621 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:42:04,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:04,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:04,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:42:04,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:04,622 INFO L85 PathProgramCache]: Analyzing trace with hash 346388276, now seen corresponding path program 1 times [2022-11-02 20:42:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:04,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085937549] [2022-11-02 20:42:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:04,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:04,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085937549] [2022-11-02 20:42:04,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085937549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:04,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:04,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903953860] [2022-11-02 20:42:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:04,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:42:04,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:42:04,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:42:04,652 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 245 [2022-11-02 20:42:04,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 245 transitions, 520 flow. Second operand has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:04,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 245 [2022-11-02 20:42:04,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:04,750 INFO L130 PetriNetUnfolder]: 20/465 cut-off events. [2022-11-02 20:42:04,751 INFO L131 PetriNetUnfolder]: For 54/76 co-relation queries the response was YES. [2022-11-02 20:42:04,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 465 events. 20/465 cut-off events. For 54/76 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1747 event pairs, 1 based on Foata normal form. 104/515 useless extension candidates. Maximal degree in co-relation 319. Up to 16 conditions per place. [2022-11-02 20:42:04,756 INFO L137 encePairwiseOnDemand]: 222/245 looper letters, 6 selfloop transitions, 0 changer transitions 0/221 dead transitions. [2022-11-02 20:42:04,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 221 transitions, 484 flow [2022-11-02 20:42:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:42:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:42:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 459 transitions. [2022-11-02 20:42:04,758 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.936734693877551 [2022-11-02 20:42:04,758 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 459 transitions. [2022-11-02 20:42:04,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 459 transitions. [2022-11-02 20:42:04,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:04,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 459 transitions. [2022-11-02 20:42:04,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,763 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,763 INFO L175 Difference]: Start difference. First operand has 223 places, 245 transitions, 520 flow. Second operand 2 states and 459 transitions. [2022-11-02 20:42:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 221 transitions, 484 flow [2022-11-02 20:42:04,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 221 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:42:04,768 INFO L231 Difference]: Finished difference. Result has 223 places, 221 transitions, 472 flow [2022-11-02 20:42:04,768 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=472, PETRI_PLACES=223, PETRI_TRANSITIONS=221} [2022-11-02 20:42:04,770 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 0 predicate places. [2022-11-02 20:42:04,770 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 221 transitions, 472 flow [2022-11-02 20:42:04,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 215.5) internal successors, (431), 2 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:04,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:04,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:42:04,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:42:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:04,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1461066187, now seen corresponding path program 1 times [2022-11-02 20:42:04,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:04,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301833448] [2022-11-02 20:42:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:04,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:04,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301833448] [2022-11-02 20:42:04,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301833448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:04,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:04,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:04,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187153340] [2022-11-02 20:42:04,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:04,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:04,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:04,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:04,861 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 245 [2022-11-02 20:42:04,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 221 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 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) [2022-11-02 20:42:04,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:04,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 245 [2022-11-02 20:42:04,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:05,020 INFO L130 PetriNetUnfolder]: 16/437 cut-off events. [2022-11-02 20:42:05,021 INFO L131 PetriNetUnfolder]: For 71/213 co-relation queries the response was YES. [2022-11-02 20:42:05,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 437 events. 16/437 cut-off events. For 71/213 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1588 event pairs, 1 based on Foata normal form. 1/390 useless extension candidates. Maximal degree in co-relation 495. Up to 30 conditions per place. [2022-11-02 20:42:05,026 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 15 selfloop transitions, 2 changer transitions 0/225 dead transitions. [2022-11-02 20:42:05,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 225 transitions, 514 flow [2022-11-02 20:42:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2022-11-02 20:42:05,028 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8734693877551021 [2022-11-02 20:42:05,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2022-11-02 20:42:05,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2022-11-02 20:42:05,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:05,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2022-11-02 20:42:05,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,034 INFO L175 Difference]: Start difference. First operand has 223 places, 221 transitions, 472 flow. Second operand 3 states and 642 transitions. [2022-11-02 20:42:05,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 225 transitions, 514 flow [2022-11-02 20:42:05,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 225 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:42:05,045 INFO L231 Difference]: Finished difference. Result has 226 places, 222 transitions, 484 flow [2022-11-02 20:42:05,046 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=226, PETRI_TRANSITIONS=222} [2022-11-02 20:42:05,049 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-11-02 20:42:05,049 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 222 transitions, 484 flow [2022-11-02 20:42:05,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 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) [2022-11-02 20:42:05,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:05,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:05,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:42:05,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:42:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1561345441, now seen corresponding path program 1 times [2022-11-02 20:42:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:05,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186404713] [2022-11-02 20:42:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:05,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:05,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:05,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186404713] [2022-11-02 20:42:05,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186404713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:05,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:05,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:05,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106926033] [2022-11-02 20:42:05,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:05,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:05,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:05,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:05,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 245 [2022-11-02 20:42:05,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 222 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:05,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:05,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 245 [2022-11-02 20:42:05,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:22,527 INFO L130 PetriNetUnfolder]: 36851/115421 cut-off events. [2022-11-02 20:42:22,527 INFO L131 PetriNetUnfolder]: For 8229/9395 co-relation queries the response was YES. [2022-11-02 20:42:23,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170450 conditions, 115421 events. 36851/115421 cut-off events. For 8229/9395 co-relation queries the response was YES. Maximal size of possible extension queue 3225. Compared 1670755 event pairs, 13718 based on Foata normal form. 2/96308 useless extension candidates. Maximal degree in co-relation 170442. Up to 29734 conditions per place. [2022-11-02 20:42:23,947 INFO L137 encePairwiseOnDemand]: 218/245 looper letters, 62 selfloop transitions, 20 changer transitions 0/259 dead transitions. [2022-11-02 20:42:23,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 259 transitions, 743 flow [2022-11-02 20:42:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:23,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2022-11-02 20:42:23,950 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8394557823129252 [2022-11-02 20:42:23,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2022-11-02 20:42:23,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2022-11-02 20:42:23,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:23,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2022-11-02 20:42:23,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:23,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:23,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:23,955 INFO L175 Difference]: Start difference. First operand has 226 places, 222 transitions, 484 flow. Second operand 3 states and 617 transitions. [2022-11-02 20:42:23,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 259 transitions, 743 flow [2022-11-02 20:42:23,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 259 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:42:23,978 INFO L231 Difference]: Finished difference. Result has 229 places, 242 transitions, 656 flow [2022-11-02 20:42:23,979 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=656, PETRI_PLACES=229, PETRI_TRANSITIONS=242} [2022-11-02 20:42:23,980 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 6 predicate places. [2022-11-02 20:42:23,980 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 242 transitions, 656 flow [2022-11-02 20:42:23,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:23,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:23,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:42:23,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:42:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1385028228, now seen corresponding path program 1 times [2022-11-02 20:42:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:23,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670186520] [2022-11-02 20:42:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:23,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:24,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670186520] [2022-11-02 20:42:24,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670186520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:24,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:24,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584882214] [2022-11-02 20:42:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:24,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:24,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:24,036 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 245 [2022-11-02 20:42:24,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 242 transitions, 656 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:24,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:24,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 245 [2022-11-02 20:42:24,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:46,332 INFO L130 PetriNetUnfolder]: 46616/146770 cut-off events. [2022-11-02 20:42:46,333 INFO L131 PetriNetUnfolder]: For 64550/75036 co-relation queries the response was YES. [2022-11-02 20:42:47,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275702 conditions, 146770 events. 46616/146770 cut-off events. For 64550/75036 co-relation queries the response was YES. Maximal size of possible extension queue 3879. Compared 2204588 event pairs, 21433 based on Foata normal form. 231/130071 useless extension candidates. Maximal degree in co-relation 275693. Up to 59402 conditions per place. [2022-11-02 20:42:48,312 INFO L137 encePairwiseOnDemand]: 232/245 looper letters, 92 selfloop transitions, 22 changer transitions 0/289 dead transitions. [2022-11-02 20:42:48,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 289 transitions, 1090 flow [2022-11-02 20:42:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:42:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2022-11-02 20:42:48,315 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8204081632653061 [2022-11-02 20:42:48,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2022-11-02 20:42:48,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2022-11-02 20:42:48,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:48,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2022-11-02 20:42:48,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:48,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:48,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:48,319 INFO L175 Difference]: Start difference. First operand has 229 places, 242 transitions, 656 flow. Second operand 3 states and 603 transitions. [2022-11-02 20:42:48,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 289 transitions, 1090 flow [2022-11-02 20:42:48,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 289 transitions, 1022 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:42:48,400 INFO L231 Difference]: Finished difference. Result has 231 places, 262 transitions, 822 flow [2022-11-02 20:42:48,401 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=822, PETRI_PLACES=231, PETRI_TRANSITIONS=262} [2022-11-02 20:42:48,401 INFO L287 CegarLoopForPetriNet]: 223 programPoint places, 8 predicate places. [2022-11-02 20:42:48,401 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 262 transitions, 822 flow [2022-11-02 20:42:48,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:48,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:48,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:48,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:42:48,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-02 20:42:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash 9664141, now seen corresponding path program 1 times [2022-11-02 20:42:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:48,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802518624] [2022-11-02 20:42:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:48,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:48,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802518624] [2022-11-02 20:42:48,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802518624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:42:48,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470396625] [2022-11-02 20:42:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:48,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:48,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:48,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:48,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a6fd856-ab3c-4f82-8f6a-8cadfbdc7951/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:42:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:48,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:42:48,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:48,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:48,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470396625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:48,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:42:48,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:42:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459864938] [2022-11-02 20:42:48,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:48,769 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 245 [2022-11-02 20:42:48,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 262 transitions, 822 flow. Second operand has 10 states, 10 states have (on average 209.3) internal successors, (2093), 10 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:48,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:48,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 245 [2022-11-02 20:42:48,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand