./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a --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 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --- 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-b5237d8 [2022-11-21 16:31:30,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:31:30,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:31:30,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:31:30,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:31:30,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:31:30,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:31:30,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:31:30,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:31:30,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:31:30,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:31:30,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:31:30,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:31:30,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:31:30,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:31:30,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:31:30,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:31:30,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:31:30,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:31:30,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:31:30,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:31:30,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:31:30,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:31:30,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:31:30,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:31:30,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:31:30,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:31:30,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:31:30,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:31:30,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:31:30,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:31:30,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:31:30,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:31:30,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:31:30,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:31:30,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:31:30,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:31:30,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:31:30,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:31:30,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:31:30,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:31:30,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 16:31:30,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:31:30,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:31:30,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:31:30,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:31:30,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:31:30,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:31:30,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:31:30,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:31:30,205 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:31:30,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:31:30,205 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:31:30,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:31:30,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:31:30,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:31:30,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:31:30,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:31:30,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:31:30,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:31:30,207 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 16:31:30,208 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:31:30,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:31:30,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:31:30,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:31:30,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:31:30,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:31:30,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:31:30,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:31:30,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:31:30,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:31:30,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:31:30,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:31:30,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:31:30,214 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:31:30,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:31:30,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:31:30,215 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_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc [2022-11-21 16:31:30,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:31:30,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:31:30,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:31:30,621 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:31:30,622 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:31:30,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-11-21 16:31:33,693 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:31:33,991 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:31:33,992 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i [2022-11-21 16:31:34,018 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/data/6626fe731/0fa77e05d8f4461396b8e65c674062ef/FLAG8e8a7054b [2022-11-21 16:31:34,033 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/data/6626fe731/0fa77e05d8f4461396b8e65c674062ef [2022-11-21 16:31:34,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:31:34,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:31:34,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:31:34,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:31:34,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:31:34,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316cff4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34, skipping insertion in model container [2022-11-21 16:31:34,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:31:34,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:31:34,693 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-11-21 16:31:34,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:31:34,743 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:31:34,796 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/sv-benchmarks/c/goblint-regression/28-race_reach_06-cond_racing1.i[41322,41335] [2022-11-21 16:31:34,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:31:34,908 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:31:34,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34 WrapperNode [2022-11-21 16:31:34,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:31:34,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:31:34,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:31:34,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:31:34,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,965 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2022-11-21 16:31:34,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:31:34,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:31:34,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:31:34,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:31:34,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:34,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:35,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:35,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:31:35,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:31:35,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:31:35,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:31:35,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (1/1) ... [2022-11-21 16:31:35,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:31:35,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:31:35,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:31:35,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:31:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:31:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:31:35,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:31:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:31:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-21 16:31:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:31:35,118 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-21 16:31:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-21 16:31:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:31:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:31:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:31:35,121 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:31:35,350 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:31:35,353 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:31:35,691 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:31:35,699 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:31:35,699 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-21 16:31:35,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:31:35 BoogieIcfgContainer [2022-11-21 16:31:35,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:31:35,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:31:35,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:31:35,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:31:35,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:31:34" (1/3) ... [2022-11-21 16:31:35,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3bde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:31:35, skipping insertion in model container [2022-11-21 16:31:35,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:31:34" (2/3) ... [2022-11-21 16:31:35,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b3bde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:31:35, skipping insertion in model container [2022-11-21 16:31:35,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:31:35" (3/3) ... [2022-11-21 16:31:35,729 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2022-11-21 16:31:35,738 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:31:35,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:31:35,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 16:31:35,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:31:35,815 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-21 16:31:35,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 148 transitions, 304 flow [2022-11-21 16:31:35,932 INFO L130 PetriNetUnfolder]: 23/201 cut-off events. [2022-11-21 16:31:35,932 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-21 16:31:35,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 201 events. 23/201 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 570 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-11-21 16:31:35,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 148 transitions, 304 flow [2022-11-21 16:31:35,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 148 transitions, 304 flow [2022-11-21 16:31:35,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:31:35,980 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;@cda73c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:31:35,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-21 16:31:36,019 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2022-11-21 16:31:36,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:31:36,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:36,020 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:36,021 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)] === [2022-11-21 16:31:36,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash -831567000, now seen corresponding path program 1 times [2022-11-21 16:31:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997859522] [2022-11-21 16:31:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:36,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:36,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997859522] [2022-11-21 16:31:36,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997859522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:36,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:36,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:36,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755577689] [2022-11-21 16:31:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:36,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:31:36,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:31:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:31:36,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 148 [2022-11-21 16:31:36,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 148 transitions, 304 flow. Second operand has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:36,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 148 [2022-11-21 16:31:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:36,509 INFO L130 PetriNetUnfolder]: 7/183 cut-off events. [2022-11-21 16:31:36,510 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-21 16:31:36,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 7/183 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 424 event pairs, 0 based on Foata normal form. 16/179 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2022-11-21 16:31:36,513 INFO L137 encePairwiseOnDemand]: 137/148 looper letters, 2 selfloop transitions, 0 changer transitions 0/136 dead transitions. [2022-11-21 16:31:36,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 136 transitions, 284 flow [2022-11-21 16:31:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:31:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:31:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2022-11-21 16:31:36,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9493243243243243 [2022-11-21 16:31:36,536 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 281 transitions. [2022-11-21 16:31:36,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 281 transitions. [2022-11-21 16:31:36,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:36,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 281 transitions. [2022-11-21 16:31:36,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,558 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,560 INFO L175 Difference]: Start difference. First operand has 136 places, 148 transitions, 304 flow. Second operand 2 states and 281 transitions. [2022-11-21 16:31:36,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 136 transitions, 284 flow [2022-11-21 16:31:36,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:31:36,570 INFO L231 Difference]: Finished difference. Result has 136 places, 136 transitions, 280 flow [2022-11-21 16:31:36,573 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=280, PETRI_PLACES=136, PETRI_TRANSITIONS=136} [2022-11-21 16:31:36,579 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 0 predicate places. [2022-11-21 16:31:36,579 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 136 transitions, 280 flow [2022-11-21 16:31:36,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:36,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:31:36,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 16:31:36,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1655945833, now seen corresponding path program 1 times [2022-11-21 16:31:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:36,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738784413] [2022-11-21 16:31:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:36,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738784413] [2022-11-21 16:31:36,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738784413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:36,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:36,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:31:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861297147] [2022-11-21 16:31:36,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:36,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:36,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 148 [2022-11-21 16:31:36,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 136 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:36,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 148 [2022-11-21 16:31:36,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:36,894 INFO L130 PetriNetUnfolder]: 3/155 cut-off events. [2022-11-21 16:31:36,894 INFO L131 PetriNetUnfolder]: For 9/20 co-relation queries the response was YES. [2022-11-21 16:31:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 155 events. 3/155 cut-off events. For 9/20 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 0 based on Foata normal form. 1/142 useless extension candidates. Maximal degree in co-relation 170. Up to 7 conditions per place. [2022-11-21 16:31:36,896 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 9 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-11-21 16:31:36,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 138 transitions, 306 flow [2022-11-21 16:31:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:31:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:31:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-11-21 16:31:36,898 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8851351351351351 [2022-11-21 16:31:36,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-11-21 16:31:36,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-11-21 16:31:36,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:36,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-11-21 16:31:36,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,927 INFO L175 Difference]: Start difference. First operand has 136 places, 136 transitions, 280 flow. Second operand 3 states and 393 transitions. [2022-11-21 16:31:36,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 138 transitions, 306 flow [2022-11-21 16:31:36,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 138 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:31:36,935 INFO L231 Difference]: Finished difference. Result has 139 places, 136 transitions, 288 flow [2022-11-21 16:31:36,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=139, PETRI_TRANSITIONS=136} [2022-11-21 16:31:36,936 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 3 predicate places. [2022-11-21 16:31:36,936 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 136 transitions, 288 flow [2022-11-21 16:31:36,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:36,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:36,937 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:36,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:31:36,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 16:31:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1949417952, now seen corresponding path program 1 times [2022-11-21 16:31:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:36,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331138040] [2022-11-21 16:31:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:36,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:37,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331138040] [2022-11-21 16:31:37,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331138040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:37,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:37,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516240817] [2022-11-21 16:31:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:37,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:37,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:37,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 148 [2022-11-21 16:31:37,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 136 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:37,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 148 [2022-11-21 16:31:37,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:37,129 INFO L130 PetriNetUnfolder]: 42/571 cut-off events. [2022-11-21 16:31:37,130 INFO L131 PetriNetUnfolder]: For 17/22 co-relation queries the response was YES. [2022-11-21 16:31:37,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 571 events. 42/571 cut-off events. For 17/22 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2867 event pairs, 8 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 666. Up to 53 conditions per place. [2022-11-21 16:31:37,134 INFO L137 encePairwiseOnDemand]: 139/148 looper letters, 18 selfloop transitions, 6 changer transitions 0/143 dead transitions. [2022-11-21 16:31:37,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 353 flow [2022-11-21 16:31:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:31:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:31:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-11-21 16:31:37,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2022-11-21 16:31:37,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-11-21 16:31:37,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-11-21 16:31:37,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:37,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-11-21 16:31:37,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,141 INFO L175 Difference]: Start difference. First operand has 139 places, 136 transitions, 288 flow. Second operand 3 states and 384 transitions. [2022-11-21 16:31:37,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 353 flow [2022-11-21 16:31:37,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 143 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:31:37,145 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 322 flow [2022-11-21 16:31:37,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2022-11-21 16:31:37,146 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 3 predicate places. [2022-11-21 16:31:37,147 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 322 flow [2022-11-21 16:31:37,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:37,147 INFO L209 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] [2022-11-21 16:31:37,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:31:37,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-21 16:31:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1625757915, now seen corresponding path program 1 times [2022-11-21 16:31:37,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:37,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077061781] [2022-11-21 16:31:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:31:37,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:31:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:31:37,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:31:37,233 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:31:37,235 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-21 16:31:37,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-21 16:31:37,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-21 16:31:37,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-21 16:31:37,243 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-21 16:31:37,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-21 16:31:37,245 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-21 16:31:37,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-21 16:31:37,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-21 16:31:37,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-21 16:31:37,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-21 16:31:37,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:31:37,247 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-21 16:31:37,251 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:31:37,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 16:31:37,302 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 16:31:37,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 194 transitions, 406 flow [2022-11-21 16:31:37,377 INFO L130 PetriNetUnfolder]: 40/331 cut-off events. [2022-11-21 16:31:37,377 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 16:31:37,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 331 events. 40/331 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1147 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 203. Up to 9 conditions per place. [2022-11-21 16:31:37,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 194 transitions, 406 flow [2022-11-21 16:31:37,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 194 transitions, 406 flow [2022-11-21 16:31:37,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:31:37,390 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;@cda73c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:31:37,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-21 16:31:37,401 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2022-11-21 16:31:37,402 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:31:37,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:37,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:37,406 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)] === [2022-11-21 16:31:37,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:37,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1981567336, now seen corresponding path program 1 times [2022-11-21 16:31:37,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:37,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088953042] [2022-11-21 16:31:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:37,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:37,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088953042] [2022-11-21 16:31:37,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088953042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:37,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:37,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831064837] [2022-11-21 16:31:37,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:37,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:31:37,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:31:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:31:37,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 194 [2022-11-21 16:31:37,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 194 transitions, 406 flow. Second operand has 2 states, 2 states have (on average 172.5) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:37,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 194 [2022-11-21 16:31:37,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:37,552 INFO L130 PetriNetUnfolder]: 12/300 cut-off events. [2022-11-21 16:31:37,552 INFO L131 PetriNetUnfolder]: For 19/26 co-relation queries the response was YES. [2022-11-21 16:31:37,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 300 events. 12/300 cut-off events. For 19/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 928 event pairs, 0 based on Foata normal form. 42/307 useless extension candidates. Maximal degree in co-relation 187. Up to 7 conditions per place. [2022-11-21 16:31:37,555 INFO L137 encePairwiseOnDemand]: 177/194 looper letters, 4 selfloop transitions, 0 changer transitions 0/176 dead transitions. [2022-11-21 16:31:37,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 378 flow [2022-11-21 16:31:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:31:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:31:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 365 transitions. [2022-11-21 16:31:37,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9407216494845361 [2022-11-21 16:31:37,557 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 365 transitions. [2022-11-21 16:31:37,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 365 transitions. [2022-11-21 16:31:37,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:37,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 365 transitions. [2022-11-21 16:31:37,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.5) internal successors, (365), 2 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,561 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,561 INFO L175 Difference]: Start difference. First operand has 177 places, 194 transitions, 406 flow. Second operand 2 states and 365 transitions. [2022-11-21 16:31:37,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 378 flow [2022-11-21 16:31:37,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 176 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:31:37,565 INFO L231 Difference]: Finished difference. Result has 177 places, 176 transitions, 370 flow [2022-11-21 16:31:37,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=370, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2022-11-21 16:31:37,568 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 0 predicate places. [2022-11-21 16:31:37,569 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 370 flow [2022-11-21 16:31:37,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 172.5) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:37,570 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:37,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:31:37,570 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)] === [2022-11-21 16:31:37,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash 174112873, now seen corresponding path program 1 times [2022-11-21 16:31:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:37,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045145810] [2022-11-21 16:31:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:37,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:37,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045145810] [2022-11-21 16:31:37,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045145810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:37,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:37,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:31:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858144326] [2022-11-21 16:31:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:37,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:37,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:37,655 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 194 [2022-11-21 16:31:37,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:37,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 194 [2022-11-21 16:31:37,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:37,756 INFO L130 PetriNetUnfolder]: 8/272 cut-off events. [2022-11-21 16:31:37,756 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-21 16:31:37,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 272 events. 8/272 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 1/244 useless extension candidates. Maximal degree in co-relation 303. Up to 16 conditions per place. [2022-11-21 16:31:37,759 INFO L137 encePairwiseOnDemand]: 191/194 looper letters, 13 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-11-21 16:31:37,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 180 transitions, 408 flow [2022-11-21 16:31:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:31:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:31:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2022-11-21 16:31:37,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8780068728522337 [2022-11-21 16:31:37,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2022-11-21 16:31:37,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2022-11-21 16:31:37,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:37,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2022-11-21 16:31:37,764 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) [2022-11-21 16:31:37,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,767 INFO L175 Difference]: Start difference. First operand has 177 places, 176 transitions, 370 flow. Second operand 3 states and 511 transitions. [2022-11-21 16:31:37,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 180 transitions, 408 flow [2022-11-21 16:31:37,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 180 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:31:37,771 INFO L231 Difference]: Finished difference. Result has 180 places, 177 transitions, 382 flow [2022-11-21 16:31:37,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=180, PETRI_TRANSITIONS=177} [2022-11-21 16:31:37,773 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 3 predicate places. [2022-11-21 16:31:37,773 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 177 transitions, 382 flow [2022-11-21 16:31:37,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:37,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:37,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:31:37,774 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)] === [2022-11-21 16:31:37,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:37,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1705408716, now seen corresponding path program 1 times [2022-11-21 16:31:37,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:37,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893880567] [2022-11-21 16:31:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:37,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:37,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:37,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893880567] [2022-11-21 16:31:37,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893880567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:37,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:37,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506445420] [2022-11-21 16:31:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:37,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:37,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:37,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 194 [2022-11-21 16:31:37,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 177 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:37,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:37,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 194 [2022-11-21 16:31:37,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:39,192 INFO L130 PetriNetUnfolder]: 1519/7685 cut-off events. [2022-11-21 16:31:39,193 INFO L131 PetriNetUnfolder]: For 338/436 co-relation queries the response was YES. [2022-11-21 16:31:39,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 7685 events. 1519/7685 cut-off events. For 338/436 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 82447 event pairs, 504 based on Foata normal form. 2/6528 useless extension candidates. Maximal degree in co-relation 10267. Up to 1422 conditions per place. [2022-11-21 16:31:39,316 INFO L137 encePairwiseOnDemand]: 175/194 looper letters, 42 selfloop transitions, 14 changer transitions 0/202 dead transitions. [2022-11-21 16:31:39,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 202 transitions, 555 flow [2022-11-21 16:31:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:31:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:31:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-11-21 16:31:39,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852233676975945 [2022-11-21 16:31:39,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-11-21 16:31:39,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-11-21 16:31:39,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:39,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-11-21 16:31:39,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:39,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:39,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:39,325 INFO L175 Difference]: Start difference. First operand has 180 places, 177 transitions, 382 flow. Second operand 3 states and 496 transitions. [2022-11-21 16:31:39,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 202 transitions, 555 flow [2022-11-21 16:31:39,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 202 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:31:39,330 INFO L231 Difference]: Finished difference. Result has 183 places, 191 transitions, 502 flow [2022-11-21 16:31:39,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=183, PETRI_TRANSITIONS=191} [2022-11-21 16:31:39,338 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 6 predicate places. [2022-11-21 16:31:39,338 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 191 transitions, 502 flow [2022-11-21 16:31:39,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:39,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:39,339 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:39,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:31:39,339 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)] === [2022-11-21 16:31:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1981661909, now seen corresponding path program 1 times [2022-11-21 16:31:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:39,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804982591] [2022-11-21 16:31:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:39,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:39,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804982591] [2022-11-21 16:31:39,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804982591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:39,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:39,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:39,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095488255] [2022-11-21 16:31:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:39,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:39,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:39,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:39,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 194 [2022-11-21 16:31:39,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 191 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:39,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:39,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 194 [2022-11-21 16:31:39,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:41,108 INFO L130 PetriNetUnfolder]: 1856/9032 cut-off events. [2022-11-21 16:31:41,108 INFO L131 PetriNetUnfolder]: For 2771/3076 co-relation queries the response was YES. [2022-11-21 16:31:41,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14869 conditions, 9032 events. 1856/9032 cut-off events. For 2771/3076 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 100258 event pairs, 793 based on Foata normal form. 18/8059 useless extension candidates. Maximal degree in co-relation 14861. Up to 2653 conditions per place. [2022-11-21 16:31:41,198 INFO L137 encePairwiseOnDemand]: 185/194 looper letters, 60 selfloop transitions, 14 changer transitions 0/218 dead transitions. [2022-11-21 16:31:41,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 218 transitions, 766 flow [2022-11-21 16:31:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:31:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:31:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2022-11-21 16:31:41,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8281786941580757 [2022-11-21 16:31:41,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2022-11-21 16:31:41,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2022-11-21 16:31:41,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:41,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2022-11-21 16:31:41,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,208 INFO L175 Difference]: Start difference. First operand has 183 places, 191 transitions, 502 flow. Second operand 3 states and 482 transitions. [2022-11-21 16:31:41,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 218 transitions, 766 flow [2022-11-21 16:31:41,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 218 transitions, 722 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:31:41,219 INFO L231 Difference]: Finished difference. Result has 185 places, 203 transitions, 600 flow [2022-11-21 16:31:41,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=185, PETRI_TRANSITIONS=203} [2022-11-21 16:31:41,220 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 8 predicate places. [2022-11-21 16:31:41,220 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 203 transitions, 600 flow [2022-11-21 16:31:41,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:41,221 INFO L209 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] [2022-11-21 16:31:41,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:31:41,222 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)] === [2022-11-21 16:31:41,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:41,222 INFO L85 PathProgramCache]: Analyzing trace with hash 685400282, now seen corresponding path program 1 times [2022-11-21 16:31:41,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:41,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672931581] [2022-11-21 16:31:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:31:41,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:31:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:31:41,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:31:41,267 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:31:41,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-21 16:31:41,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-21 16:31:41,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-21 16:31:41,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-21 16:31:41,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-21 16:31:41,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-21 16:31:41,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-21 16:31:41,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-21 16:31:41,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-21 16:31:41,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-21 16:31:41,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-21 16:31:41,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-21 16:31:41,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-21 16:31:41,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-21 16:31:41,270 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-21 16:31:41,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:31:41,270 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-21 16:31:41,271 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:31:41,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 16:31:41,300 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:31:41,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 240 transitions, 510 flow [2022-11-21 16:31:41,373 INFO L130 PetriNetUnfolder]: 62/506 cut-off events. [2022-11-21 16:31:41,373 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-21 16:31:41,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 506 events. 62/506 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1921 event pairs, 1 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 339. Up to 16 conditions per place. [2022-11-21 16:31:41,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 240 transitions, 510 flow [2022-11-21 16:31:41,384 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 240 transitions, 510 flow [2022-11-21 16:31:41,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:31:41,385 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;@cda73c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:31:41,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-21 16:31:41,391 INFO L130 PetriNetUnfolder]: 5/70 cut-off events. [2022-11-21 16:31:41,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:31:41,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:41,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:41,391 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)] === [2022-11-21 16:31:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1919492456, now seen corresponding path program 1 times [2022-11-21 16:31:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:41,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330866318] [2022-11-21 16:31:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:41,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:41,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330866318] [2022-11-21 16:31:41,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330866318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:41,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:41,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348491919] [2022-11-21 16:31:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:41,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:31:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:31:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:31:41,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 240 [2022-11-21 16:31:41,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 240 transitions, 510 flow. Second operand has 2 states, 2 states have (on average 210.5) internal successors, (421), 2 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:41,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 240 [2022-11-21 16:31:41,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:41,502 INFO L130 PetriNetUnfolder]: 20/460 cut-off events. [2022-11-21 16:31:41,503 INFO L131 PetriNetUnfolder]: For 55/77 co-relation queries the response was YES. [2022-11-21 16:31:41,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 460 events. 20/460 cut-off events. For 55/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1724 event pairs, 1 based on Foata normal form. 104/510 useless extension candidates. Maximal degree in co-relation 314. Up to 16 conditions per place. [2022-11-21 16:31:41,508 INFO L137 encePairwiseOnDemand]: 217/240 looper letters, 6 selfloop transitions, 0 changer transitions 0/216 dead transitions. [2022-11-21 16:31:41,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 216 transitions, 474 flow [2022-11-21 16:31:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:31:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:31:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 449 transitions. [2022-11-21 16:31:41,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9354166666666667 [2022-11-21 16:31:41,510 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 449 transitions. [2022-11-21 16:31:41,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 449 transitions. [2022-11-21 16:31:41,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:41,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 449 transitions. [2022-11-21 16:31:41,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.5) internal successors, (449), 2 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,513 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,514 INFO L175 Difference]: Start difference. First operand has 218 places, 240 transitions, 510 flow. Second operand 2 states and 449 transitions. [2022-11-21 16:31:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 216 transitions, 474 flow [2022-11-21 16:31:41,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:31:41,518 INFO L231 Difference]: Finished difference. Result has 218 places, 216 transitions, 462 flow [2022-11-21 16:31:41,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=462, PETRI_PLACES=218, PETRI_TRANSITIONS=216} [2022-11-21 16:31:41,519 INFO L288 CegarLoopForPetriNet]: 218 programPoint places, 0 predicate places. [2022-11-21 16:31:41,519 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 216 transitions, 462 flow [2022-11-21 16:31:41,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 210.5) internal successors, (421), 2 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:41,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:41,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:31:41,520 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)] === [2022-11-21 16:31:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:41,521 INFO L85 PathProgramCache]: Analyzing trace with hash 112037993, now seen corresponding path program 1 times [2022-11-21 16:31:41,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:41,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072351714] [2022-11-21 16:31:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:41,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:41,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:41,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072351714] [2022-11-21 16:31:41,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072351714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:41,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:41,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:31:41,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058848262] [2022-11-21 16:31:41,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:41,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:41,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:41,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 240 [2022-11-21 16:31:41,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 216 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 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) [2022-11-21 16:31:41,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:41,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 240 [2022-11-21 16:31:41,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:41,715 INFO L130 PetriNetUnfolder]: 16/432 cut-off events. [2022-11-21 16:31:41,715 INFO L131 PetriNetUnfolder]: For 77/224 co-relation queries the response was YES. [2022-11-21 16:31:41,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 432 events. 16/432 cut-off events. For 77/224 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1579 event pairs, 1 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 490. Up to 30 conditions per place. [2022-11-21 16:31:41,720 INFO L137 encePairwiseOnDemand]: 237/240 looper letters, 15 selfloop transitions, 2 changer transitions 0/220 dead transitions. [2022-11-21 16:31:41,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 220 transitions, 504 flow [2022-11-21 16:31:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:31:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:31:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2022-11-21 16:31:41,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8708333333333333 [2022-11-21 16:31:41,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2022-11-21 16:31:41,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2022-11-21 16:31:41,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:41,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2022-11-21 16:31:41,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-21 16:31:41,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,727 INFO L175 Difference]: Start difference. First operand has 218 places, 216 transitions, 462 flow. Second operand 3 states and 627 transitions. [2022-11-21 16:31:41,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 220 transitions, 504 flow [2022-11-21 16:31:41,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 220 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:31:41,731 INFO L231 Difference]: Finished difference. Result has 221 places, 217 transitions, 474 flow [2022-11-21 16:31:41,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=221, PETRI_TRANSITIONS=217} [2022-11-21 16:31:41,732 INFO L288 CegarLoopForPetriNet]: 218 programPoint places, 3 predicate places. [2022-11-21 16:31:41,733 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 217 transitions, 474 flow [2022-11-21 16:31:41,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 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) [2022-11-21 16:31:41,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:41,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:31:41,734 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)] === [2022-11-21 16:31:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash -889797384, now seen corresponding path program 1 times [2022-11-21 16:31:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:41,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182292647] [2022-11-21 16:31:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:41,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:41,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:41,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182292647] [2022-11-21 16:31:41,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182292647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:41,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:41,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450877059] [2022-11-21 16:31:41,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:41,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:41,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:41,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:41,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:41,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 240 [2022-11-21 16:31:41,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 217 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:41,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:41,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 240 [2022-11-21 16:31:41,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:31:57,320 INFO L130 PetriNetUnfolder]: 36851/115416 cut-off events. [2022-11-21 16:31:57,321 INFO L131 PetriNetUnfolder]: For 8608/9774 co-relation queries the response was YES. [2022-11-21 16:31:58,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170445 conditions, 115416 events. 36851/115416 cut-off events. For 8608/9774 co-relation queries the response was YES. Maximal size of possible extension queue 3234. Compared 1671017 event pairs, 13718 based on Foata normal form. 2/96305 useless extension candidates. Maximal degree in co-relation 170437. Up to 29734 conditions per place. [2022-11-21 16:31:58,798 INFO L137 encePairwiseOnDemand]: 213/240 looper letters, 62 selfloop transitions, 20 changer transitions 0/254 dead transitions. [2022-11-21 16:31:58,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 254 transitions, 733 flow [2022-11-21 16:31:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:31:58,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:31:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2022-11-21 16:31:58,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8361111111111111 [2022-11-21 16:31:58,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2022-11-21 16:31:58,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2022-11-21 16:31:58,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:31:58,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2022-11-21 16:31:58,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:58,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:58,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:58,807 INFO L175 Difference]: Start difference. First operand has 221 places, 217 transitions, 474 flow. Second operand 3 states and 602 transitions. [2022-11-21 16:31:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 254 transitions, 733 flow [2022-11-21 16:31:58,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 254 transitions, 731 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:31:58,819 INFO L231 Difference]: Finished difference. Result has 224 places, 237 transitions, 646 flow [2022-11-21 16:31:58,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=224, PETRI_TRANSITIONS=237} [2022-11-21 16:31:58,822 INFO L288 CegarLoopForPetriNet]: 218 programPoint places, 6 predicate places. [2022-11-21 16:31:58,823 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 237 transitions, 646 flow [2022-11-21 16:31:58,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:31:58,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:31:58,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:31:58,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:31:58,824 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)] === [2022-11-21 16:31:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:31:58,825 INFO L85 PathProgramCache]: Analyzing trace with hash -254123663, now seen corresponding path program 1 times [2022-11-21 16:31:58,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:31:58,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170974676] [2022-11-21 16:31:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:31:58,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:31:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:31:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:31:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:31:58,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170974676] [2022-11-21 16:31:58,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170974676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:31:58,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:31:58,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:31:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099550941] [2022-11-21 16:31:58,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:31:58,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:31:58,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:31:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:31:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:31:58,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 240 [2022-11-21 16:31:58,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 237 transitions, 646 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) [2022-11-21 16:31:58,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:31:58,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 240 [2022-11-21 16:31:58,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:32:17,894 INFO L130 PetriNetUnfolder]: 46544/144085 cut-off events. [2022-11-21 16:32:17,894 INFO L131 PetriNetUnfolder]: For 64102/71625 co-relation queries the response was YES. [2022-11-21 16:32:19,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273005 conditions, 144085 events. 46544/144085 cut-off events. For 64102/71625 co-relation queries the response was YES. Maximal size of possible extension queue 3797. Compared 2139973 event pairs, 21545 based on Foata normal form. 247/127788 useless extension candidates. Maximal degree in co-relation 272996. Up to 59396 conditions per place. [2022-11-21 16:32:19,697 INFO L137 encePairwiseOnDemand]: 227/240 looper letters, 92 selfloop transitions, 22 changer transitions 0/284 dead transitions. [2022-11-21 16:32:19,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 284 transitions, 1080 flow [2022-11-21 16:32:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:32:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:32:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2022-11-21 16:32:19,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-11-21 16:32:19,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2022-11-21 16:32:19,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2022-11-21 16:32:19,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:32:19,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2022-11-21 16:32:19,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:19,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:19,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:19,705 INFO L175 Difference]: Start difference. First operand has 224 places, 237 transitions, 646 flow. Second operand 3 states and 588 transitions. [2022-11-21 16:32:19,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 284 transitions, 1080 flow [2022-11-21 16:32:19,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 284 transitions, 1012 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:32:19,796 INFO L231 Difference]: Finished difference. Result has 226 places, 257 transitions, 812 flow [2022-11-21 16:32:19,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=812, PETRI_PLACES=226, PETRI_TRANSITIONS=257} [2022-11-21 16:32:19,797 INFO L288 CegarLoopForPetriNet]: 218 programPoint places, 8 predicate places. [2022-11-21 16:32:19,797 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 257 transitions, 812 flow [2022-11-21 16:32:19,797 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) [2022-11-21 16:32:19,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:32:19,798 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:32:19,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:32:19,798 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)] === [2022-11-21 16:32:19,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:32:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 743370693, now seen corresponding path program 1 times [2022-11-21 16:32:19,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:32:19,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975611269] [2022-11-21 16:32:19,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:32:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:19,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:32:19,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975611269] [2022-11-21 16:32:19,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975611269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:32:19,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338695763] [2022-11-21 16:32:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:32:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:32:19,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:32:19,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:32:19,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da977b4-a931-4bf3-977f-955949cb35e7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:32:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:32:20,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 16:32:20,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:32:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:20,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:32:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:32:20,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338695763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:32:20,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:32:20,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-21 16:32:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950382481] [2022-11-21 16:32:20,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:32:20,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:32:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:32:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:32:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:32:20,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 240 [2022-11-21 16:32:20,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 257 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 204.3) internal successors, (2043), 10 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:32:20,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:32:20,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 240 [2022-11-21 16:32:20,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand