./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:04:03,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:04:03,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:04:03,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:04:03,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:04:03,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:04:03,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:04:03,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:04:03,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:04:03,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:04:03,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:04:03,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:04:03,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:04:03,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:04:03,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:04:03,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:04:03,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:04:03,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:04:03,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:04:03,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:04:03,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:04:03,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:04:03,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:04:03,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:04:03,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:04:03,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:04:03,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:04:03,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:04:03,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:04:03,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:04:03,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:04:03,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:04:03,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:04:03,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:04:03,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:04:03,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:04:03,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:04:03,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:04:03,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:04:03,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:04:03,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:04:03,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:04:03,477 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:04:03,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:04:03,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:04:03,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:04:03,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:04:03,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:04:03,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:04:03,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:04:03,484 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:04:03,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:04:03,485 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:04:03,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:04:03,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:04:03,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:04:03,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:04:03,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:04:03,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:04:03,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:04:03,487 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:04:03,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:04:03,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:04:03,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:04:03,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:04:03,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:04:03,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:04:03,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:04:03,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:04:03,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:04:03,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:04:03,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:04:03,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:04:03,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:04:03,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:04:03,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:04:03,491 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:04:03,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:04:03,492 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2022-11-25 17:04:03,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:04:03,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:04:03,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:04:03,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:04:03,865 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:04:03,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-11-25 17:04:06,953 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:04:07,269 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:04:07,270 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-11-25 17:04:07,283 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/data/298dbaccb/1dd3eb6350f44340b0047cf18cca431c/FLAGcaa6c56a0 [2022-11-25 17:04:07,299 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/data/298dbaccb/1dd3eb6350f44340b0047cf18cca431c [2022-11-25 17:04:07,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:04:07,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:04:07,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:04:07,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:04:07,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:04:07,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:07,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a45ecaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07, skipping insertion in model container [2022-11-25 17:04:07,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:07,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:04:07,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:04:07,776 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_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-11-25 17:04:07,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:04:07,803 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:04:07,878 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_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-11-25 17:04:07,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:04:07,928 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:04:07,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07 WrapperNode [2022-11-25 17:04:07,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:04:07,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:04:07,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:04:07,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:04:07,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:07,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:07,997 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 223 [2022-11-25 17:04:07,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:04:07,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:04:07,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:04:07,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:04:08,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,049 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:04:08,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:04:08,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:04:08,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:04:08,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (1/1) ... [2022-11-25 17:04:08,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:04:08,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:04:08,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:04:08,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_079fa05a-c501-490b-a70b-4ff1c8bf6ac9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:04:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:04:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-25 17:04:08,186 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-25 17:04:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 17:04:08,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 17:04:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:04:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:04:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:04:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:04:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:04:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:04:08,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:04:08,192 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:04:08,376 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:04:08,378 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:04:08,888 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:04:09,243 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:04:09,243 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:04:09,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:04:09 BoogieIcfgContainer [2022-11-25 17:04:09,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:04:09,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:04:09,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:04:09,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:04:09,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:04:07" (1/3) ... [2022-11-25 17:04:09,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ab89c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:04:09, skipping insertion in model container [2022-11-25 17:04:09,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:04:07" (2/3) ... [2022-11-25 17:04:09,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ab89c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:04:09, skipping insertion in model container [2022-11-25 17:04:09,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:04:09" (3/3) ... [2022-11-25 17:04:09,263 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2022-11-25 17:04:09,273 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:04:09,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:04:09,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2022-11-25 17:04:09,286 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:04:09,476 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:04:09,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 126 transitions, 262 flow [2022-11-25 17:04:09,640 INFO L130 PetriNetUnfolder]: 6/136 cut-off events. [2022-11-25 17:04:09,641 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:04:09,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 136 events. 6/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2022-11-25 17:04:09,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 126 transitions, 262 flow [2022-11-25 17:04:09,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 125 transitions, 258 flow [2022-11-25 17:04:09,663 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:04:09,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 125 transitions, 258 flow [2022-11-25 17:04:09,697 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 125 transitions, 258 flow [2022-11-25 17:04:09,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 125 transitions, 258 flow [2022-11-25 17:04:09,753 INFO L130 PetriNetUnfolder]: 6/136 cut-off events. [2022-11-25 17:04:09,754 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:04:09,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 136 events. 6/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2022-11-25 17:04:09,760 INFO L119 LiptonReduction]: Number of co-enabled transitions 5068 [2022-11-25 17:04:47,406 INFO L134 LiptonReduction]: Checked pairs total: 30339 [2022-11-25 17:04:47,407 INFO L136 LiptonReduction]: Total number of compositions: 204 [2022-11-25 17:04:47,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:04:47,430 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c06c7d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:04:47,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-25 17:04:47,433 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2022-11-25 17:04:47,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:04:47,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:47,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:04:47,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-11-25 17:04:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash 27571876, now seen corresponding path program 1 times [2022-11-25 17:04:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:47,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852321631] [2022-11-25 17:04:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:47,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852321631] [2022-11-25 17:04:47,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852321631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:47,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:47,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:04:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194054373] [2022-11-25 17:04:47,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:47,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:04:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:47,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:04:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:04:47,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 330 [2022-11-25 17:04:47,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:47,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 330 [2022-11-25 17:04:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:47,901 INFO L130 PetriNetUnfolder]: 312/604 cut-off events. [2022-11-25 17:04:47,902 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:04:47,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 604 events. 312/604 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2621 event pairs, 252 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 1115. Up to 505 conditions per place. [2022-11-25 17:04:47,914 INFO L137 encePairwiseOnDemand]: 312/330 looper letters, 24 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2022-11-25 17:04:47,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 130 flow [2022-11-25 17:04:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:04:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:04:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 242 transitions. [2022-11-25 17:04:47,934 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2022-11-25 17:04:47,935 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 242 transitions. [2022-11-25 17:04:47,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 242 transitions. [2022-11-25 17:04:47,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:47,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 242 transitions. [2022-11-25 17:04:47,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.0) internal successors, (242), 2 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,957 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,960 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 118 flow. Second operand 2 states and 242 transitions. [2022-11-25 17:04:47,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 130 flow [2022-11-25 17:04:47,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 129 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:04:47,966 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 81 flow [2022-11-25 17:04:47,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-11-25 17:04:47,974 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -18 predicate places. [2022-11-25 17:04:47,974 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 81 flow [2022-11-25 17:04:47,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:47,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:47,975 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:04:47,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:04:47,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-11-25 17:04:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash 726793158, now seen corresponding path program 1 times [2022-11-25 17:04:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:47,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273412401] [2022-11-25 17:04:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:47,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:04:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:04:48,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:04:48,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273412401] [2022-11-25 17:04:48,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273412401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:04:48,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:04:48,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:04:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736433262] [2022-11-25 17:04:48,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:04:48,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:04:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:04:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:04:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:04:48,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 330 [2022-11-25 17:04:48,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:48,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:04:48,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 330 [2022-11-25 17:04:48,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:04:48,576 INFO L130 PetriNetUnfolder]: 925/1580 cut-off events. [2022-11-25 17:04:48,576 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-25 17:04:48,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 1580 events. 925/1580 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7054 event pairs, 274 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 3103. Up to 921 conditions per place. [2022-11-25 17:04:48,587 INFO L137 encePairwiseOnDemand]: 319/330 looper letters, 43 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2022-11-25 17:04:48,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 234 flow [2022-11-25 17:04:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:04:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:04:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2022-11-25 17:04:48,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3 [2022-11-25 17:04:48,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2022-11-25 17:04:48,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2022-11-25 17:04:48,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:04:48,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2022-11-25 17:04:48,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:48,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:48,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:48,598 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 81 flow. Second operand 3 states and 297 transitions. [2022-11-25 17:04:48,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 234 flow [2022-11-25 17:04:48,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:04:48,600 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 147 flow [2022-11-25 17:04:48,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2022-11-25 17:04:48,602 INFO L288 CegarLoopForPetriNet]: 59 programPoint places, -14 predicate places. [2022-11-25 17:04:48,602 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 147 flow [2022-11-25 17:04:48,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:04:48,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:04:48,603 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:04:48,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:04:48,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2022-11-25 17:04:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:04:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash 252019417, now seen corresponding path program 1 times [2022-11-25 17:04:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:04:48,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157228331] [2022-11-25 17:04:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:04:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:04:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:04:48,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:04:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:04:48,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:04:48,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:04:48,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (43 of 44 remaining) [2022-11-25 17:04:48,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (42 of 44 remaining) [2022-11-25 17:04:48,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (41 of 44 remaining) [2022-11-25 17:04:48,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (40 of 44 remaining) [2022-11-25 17:04:48,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (39 of 44 remaining) [2022-11-25 17:04:48,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (38 of 44 remaining) [2022-11-25 17:04:48,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (37 of 44 remaining) [2022-11-25 17:04:48,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (36 of 44 remaining) [2022-11-25 17:04:48,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (35 of 44 remaining) [2022-11-25 17:04:48,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (34 of 44 remaining) [2022-11-25 17:04:48,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (33 of 44 remaining) [2022-11-25 17:04:48,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (32 of 44 remaining) [2022-11-25 17:04:48,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (31 of 44 remaining) [2022-11-25 17:04:48,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (30 of 44 remaining) [2022-11-25 17:04:48,723 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (29 of 44 remaining) [2022-11-25 17:04:48,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (28 of 44 remaining) [2022-11-25 17:04:48,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (27 of 44 remaining) [2022-11-25 17:04:48,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 44 remaining) [2022-11-25 17:04:48,724 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 44 remaining) [2022-11-25 17:04:48,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 44 remaining) [2022-11-25 17:04:48,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 44 remaining) [2022-11-25 17:04:48,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 44 remaining) [2022-11-25 17:04:48,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 44 remaining) [2022-11-25 17:04:48,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 44 remaining) [2022-11-25 17:04:48,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (19 of 44 remaining) [2022-11-25 17:04:48,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (18 of 44 remaining) [2022-11-25 17:04:48,726 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 44 remaining) [2022-11-25 17:04:48,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (16 of 44 remaining) [2022-11-25 17:04:48,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (15 of 44 remaining) [2022-11-25 17:04:48,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (14 of 44 remaining) [2022-11-25 17:04:48,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (13 of 44 remaining) [2022-11-25 17:04:48,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (12 of 44 remaining) [2022-11-25 17:04:48,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (11 of 44 remaining) [2022-11-25 17:04:48,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (10 of 44 remaining) [2022-11-25 17:04:48,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (9 of 44 remaining) [2022-11-25 17:04:48,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (8 of 44 remaining) [2022-11-25 17:04:48,732 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (7 of 44 remaining) [2022-11-25 17:04:48,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (6 of 44 remaining) [2022-11-25 17:04:48,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (5 of 44 remaining) [2022-11-25 17:04:48,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 44 remaining) [2022-11-25 17:04:48,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 44 remaining) [2022-11-25 17:04:48,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 44 remaining) [2022-11-25 17:04:48,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 44 remaining) [2022-11-25 17:04:48,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 44 remaining) [2022-11-25 17:04:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:04:48,736 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 17:04:48,739 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:04:48,740 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:04:48,852 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:04:48,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 214 transitions, 452 flow [2022-11-25 17:04:48,916 INFO L130 PetriNetUnfolder]: 8/217 cut-off events. [2022-11-25 17:04:48,916 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:04:48,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 217 events. 8/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 449 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 226. Up to 6 conditions per place. [2022-11-25 17:04:48,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 214 transitions, 452 flow [2022-11-25 17:04:48,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 193 transitions, 401 flow [2022-11-25 17:04:48,923 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:04:48,923 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 193 transitions, 401 flow [2022-11-25 17:04:48,924 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 193 transitions, 401 flow [2022-11-25 17:04:48,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 193 transitions, 401 flow [2022-11-25 17:04:48,959 INFO L130 PetriNetUnfolder]: 8/217 cut-off events. [2022-11-25 17:04:48,959 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:04:48,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 217 events. 8/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 450 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 202. Up to 6 conditions per place. [2022-11-25 17:04:48,971 INFO L119 LiptonReduction]: Number of co-enabled transitions 18640 [2022-11-25 17:06:35,773 INFO L134 LiptonReduction]: Checked pairs total: 343855 [2022-11-25 17:06:35,773 INFO L136 LiptonReduction]: Total number of compositions: 329 [2022-11-25 17:06:35,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:35,777 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;@1c06c7d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:35,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-11-25 17:06:35,780 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2022-11-25 17:06:35,780 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:35,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:35,781 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:06:35,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-25 17:06:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash 44130108, now seen corresponding path program 1 times [2022-11-25 17:06:35,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:35,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912500083] [2022-11-25 17:06:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:35,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:35,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:35,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912500083] [2022-11-25 17:06:35,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912500083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:35,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:35,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441613459] [2022-11-25 17:06:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:35,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:06:35,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:06:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:06:35,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 543 [2022-11-25 17:06:35,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 112 transitions, 239 flow. Second operand has 2 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:35,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:35,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 543 [2022-11-25 17:06:35,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:38,035 INFO L130 PetriNetUnfolder]: 4452/9234 cut-off events. [2022-11-25 17:06:38,036 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-11-25 17:06:38,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15733 conditions, 9234 events. 4452/9234 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 73999 event pairs, 3759 based on Foata normal form. 0/8307 useless extension candidates. Maximal degree in co-relation 15722. Up to 6265 conditions per place. [2022-11-25 17:06:38,121 INFO L137 encePairwiseOnDemand]: 521/543 looper letters, 38 selfloop transitions, 0 changer transitions 0/90 dead transitions. [2022-11-25 17:06:38,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 271 flow [2022-11-25 17:06:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:06:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:06:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 388 transitions. [2022-11-25 17:06:38,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3572744014732965 [2022-11-25 17:06:38,126 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 388 transitions. [2022-11-25 17:06:38,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 388 transitions. [2022-11-25 17:06:38,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:38,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 388 transitions. [2022-11-25 17:06:38,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 194.0) internal successors, (388), 2 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:38,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 543.0) internal successors, (1629), 3 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:38,135 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 543.0) internal successors, (1629), 3 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:38,135 INFO L175 Difference]: Start difference. First operand has 117 places, 112 transitions, 239 flow. Second operand 2 states and 388 transitions. [2022-11-25 17:06:38,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 271 flow [2022-11-25 17:06:38,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 90 transitions, 268 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:06:38,143 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 192 flow [2022-11-25 17:06:38,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=192, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2022-11-25 17:06:38,146 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -22 predicate places. [2022-11-25 17:06:38,147 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 192 flow [2022-11-25 17:06:38,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:38,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:38,148 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:06:38,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:06:38,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-25 17:06:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:38,149 INFO L85 PathProgramCache]: Analyzing trace with hash -540598593, now seen corresponding path program 1 times [2022-11-25 17:06:38,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:38,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177670647] [2022-11-25 17:06:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:38,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177670647] [2022-11-25 17:06:38,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177670647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:38,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:38,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:38,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667746821] [2022-11-25 17:06:38,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:38,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:38,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:38,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 543 [2022-11-25 17:06:38,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:38,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:38,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 543 [2022-11-25 17:06:38,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:46,870 INFO L130 PetriNetUnfolder]: 35440/56349 cut-off events. [2022-11-25 17:06:46,870 INFO L131 PetriNetUnfolder]: For 640/640 co-relation queries the response was YES. [2022-11-25 17:06:47,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107965 conditions, 56349 events. 35440/56349 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 449732 event pairs, 12407 based on Foata normal form. 0/53059 useless extension candidates. Maximal degree in co-relation 107960. Up to 30526 conditions per place. [2022-11-25 17:06:47,506 INFO L137 encePairwiseOnDemand]: 508/543 looper letters, 95 selfloop transitions, 26 changer transitions 0/145 dead transitions. [2022-11-25 17:06:47,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 145 transitions, 552 flow [2022-11-25 17:06:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2022-11-25 17:06:47,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3118477593615715 [2022-11-25 17:06:47,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2022-11-25 17:06:47,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2022-11-25 17:06:47,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:47,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2022-11-25 17:06:47,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:47,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:47,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:47,521 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 192 flow. Second operand 3 states and 508 transitions. [2022-11-25 17:06:47,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 145 transitions, 552 flow [2022-11-25 17:06:47,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:47,529 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 418 flow [2022-11-25 17:06:47,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2022-11-25 17:06:47,532 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -18 predicate places. [2022-11-25 17:06:47,537 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 418 flow [2022-11-25 17:06:47,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:47,538 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:47,538 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:06:47,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:06:47,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-25 17:06:47,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1386436927, now seen corresponding path program 1 times [2022-11-25 17:06:47,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:47,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965734149] [2022-11-25 17:06:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:47,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:06:47,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:47,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965734149] [2022-11-25 17:06:47,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965734149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:47,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:47,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:47,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211968967] [2022-11-25 17:06:47,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:47,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:47,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:47,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 543 [2022-11-25 17:06:47,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:47,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:47,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 543 [2022-11-25 17:06:47,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:54,496 INFO L130 PetriNetUnfolder]: 28872/48883 cut-off events. [2022-11-25 17:06:54,497 INFO L131 PetriNetUnfolder]: For 18189/18821 co-relation queries the response was YES. [2022-11-25 17:06:54,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114887 conditions, 48883 events. 28872/48883 cut-off events. For 18189/18821 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 412693 event pairs, 17656 based on Foata normal form. 82/45878 useless extension candidates. Maximal degree in co-relation 114880. Up to 36059 conditions per place. [2022-11-25 17:06:54,873 INFO L137 encePairwiseOnDemand]: 530/543 looper letters, 80 selfloop transitions, 23 changer transitions 0/153 dead transitions. [2022-11-25 17:06:54,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 153 transitions, 763 flow [2022-11-25 17:06:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:54,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-11-25 17:06:54,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3069367710251688 [2022-11-25 17:06:54,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-11-25 17:06:54,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-11-25 17:06:54,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:54,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-11-25 17:06:54,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:54,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:54,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 543.0) internal successors, (2172), 4 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:54,897 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 418 flow. Second operand 3 states and 500 transitions. [2022-11-25 17:06:54,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 153 transitions, 763 flow [2022-11-25 17:06:54,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 153 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:06:54,961 INFO L231 Difference]: Finished difference. Result has 101 places, 137 transitions, 584 flow [2022-11-25 17:06:54,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=543, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=584, PETRI_PLACES=101, PETRI_TRANSITIONS=137} [2022-11-25 17:06:54,966 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -16 predicate places. [2022-11-25 17:06:54,966 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 584 flow [2022-11-25 17:06:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:06:54,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:54,967 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 17:06:54,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:06:54,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2022-11-25 17:06:54,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2088038906, now seen corresponding path program 1 times [2022-11-25 17:06:54,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:54,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004161334] [2022-11-25 17:06:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:54,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:55,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:55,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:55,037 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:06:55,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2022-11-25 17:06:55,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2022-11-25 17:06:55,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2022-11-25 17:06:55,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2022-11-25 17:06:55,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2022-11-25 17:06:55,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2022-11-25 17:06:55,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2022-11-25 17:06:55,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2022-11-25 17:06:55,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2022-11-25 17:06:55,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2022-11-25 17:06:55,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2022-11-25 17:06:55,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2022-11-25 17:06:55,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2022-11-25 17:06:55,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2022-11-25 17:06:55,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2022-11-25 17:06:55,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2022-11-25 17:06:55,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2022-11-25 17:06:55,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2022-11-25 17:06:55,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2022-11-25 17:06:55,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2022-11-25 17:06:55,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2022-11-25 17:06:55,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2022-11-25 17:06:55,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (42 of 65 remaining) [2022-11-25 17:06:55,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2022-11-25 17:06:55,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2022-11-25 17:06:55,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2022-11-25 17:06:55,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2022-11-25 17:06:55,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2022-11-25 17:06:55,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2022-11-25 17:06:55,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2022-11-25 17:06:55,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2022-11-25 17:06:55,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2022-11-25 17:06:55,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2022-11-25 17:06:55,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2022-11-25 17:06:55,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2022-11-25 17:06:55,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2022-11-25 17:06:55,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2022-11-25 17:06:55,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2022-11-25 17:06:55,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2022-11-25 17:06:55,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2022-11-25 17:06:55,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2022-11-25 17:06:55,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2022-11-25 17:06:55,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2022-11-25 17:06:55,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2022-11-25 17:06:55,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2022-11-25 17:06:55,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2022-11-25 17:06:55,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2022-11-25 17:06:55,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2022-11-25 17:06:55,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2022-11-25 17:06:55,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2022-11-25 17:06:55,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2022-11-25 17:06:55,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2022-11-25 17:06:55,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2022-11-25 17:06:55,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2022-11-25 17:06:55,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2022-11-25 17:06:55,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2022-11-25 17:06:55,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2022-11-25 17:06:55,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2022-11-25 17:06:55,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2022-11-25 17:06:55,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2022-11-25 17:06:55,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2022-11-25 17:06:55,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2022-11-25 17:06:55,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2022-11-25 17:06:55,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2022-11-25 17:06:55,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2022-11-25 17:06:55,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:06:55,054 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 17:06:55,055 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:06:55,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:06:55,149 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:06:55,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 302 transitions, 646 flow [2022-11-25 17:06:55,227 INFO L130 PetriNetUnfolder]: 10/298 cut-off events. [2022-11-25 17:06:55,227 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:06:55,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 298 events. 10/298 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 833 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 312. Up to 8 conditions per place. [2022-11-25 17:06:55,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 302 transitions, 646 flow [2022-11-25 17:06:55,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 261 transitions, 546 flow [2022-11-25 17:06:55,242 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:06:55,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 261 transitions, 546 flow [2022-11-25 17:06:55,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 261 transitions, 546 flow [2022-11-25 17:06:55,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 261 transitions, 546 flow [2022-11-25 17:06:55,305 INFO L130 PetriNetUnfolder]: 10/298 cut-off events. [2022-11-25 17:06:55,305 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:06:55,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 298 events. 10/298 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 825 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 288. Up to 8 conditions per place. [2022-11-25 17:06:55,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 41324 [2022-11-25 17:10:22,284 INFO L134 LiptonReduction]: Checked pairs total: 836740 [2022-11-25 17:10:22,284 INFO L136 LiptonReduction]: Total number of compositions: 471 [2022-11-25 17:10:22,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:10:22,287 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;@1c06c7d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:10:22,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2022-11-25 17:10:22,289 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2022-11-25 17:10:22,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:10:22,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:10:22,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:10:22,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2022-11-25 17:10:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash 67633185, now seen corresponding path program 1 times [2022-11-25 17:10:22,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:22,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097291319] [2022-11-25 17:10:22,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:22,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:22,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097291319] [2022-11-25 17:10:22,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097291319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:22,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:22,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:10:22,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202250280] [2022-11-25 17:10:22,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:22,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:10:22,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:10:22,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:10:22,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 773 [2022-11-25 17:10:22,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 158 transitions, 340 flow. Second operand has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:10:22,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:10:22,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 773 [2022-11-25 17:10:22,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand