./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_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_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/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_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/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_6776d586-118a-42fc-bebf-d2400299ebad/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 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --- 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 17:06:19,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:06:19,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:06:19,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:06:19,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:06:19,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:06:19,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:06:19,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:06:19,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:06:19,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:06:19,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:06:19,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:06:19,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:06:19,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:06:19,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:06:19,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:06:19,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:06:19,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:06:19,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:06:19,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:06:19,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:06:19,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:06:19,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:06:19,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:06:19,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:06:19,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:06:19,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:06:19,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:06:19,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:06:19,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:06:19,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:06:19,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:06:19,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:06:19,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:06:19,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:06:19,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:06:19,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:06:19,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:06:19,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:06:19,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:06:19,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:06:19,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 17:06:19,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:06:19,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:06:19,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:06:19,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:06:19,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:06:19,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:06:19,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:06:19,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:06:19,314 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:06:19,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:06:19,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:06:19,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:06:19,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:06:19,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:06:19,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:06:19,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:06:19,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:06:19,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:06:19,316 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 17:06:19,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:06:19,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:06:19,317 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:06:19,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:06:19,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:06:19,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:06:19,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:06:19,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:06:19,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:06:19,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:06:19,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:06:19,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:06:19,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:06:19,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:06:19,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:06:19,320 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:06:19,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:06:19,320 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_6776d586-118a-42fc-bebf-d2400299ebad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 [2022-11-25 17:06:19,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:06:19,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:06:19,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:06:19,612 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:06:19,613 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:06:19,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2022-11-25 17:06:22,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:06:22,996 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:06:22,996 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2022-11-25 17:06:23,012 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/data/a0ecf9800/70b1d9a3c0ba4fabb7b0a04845fe47f3/FLAG440d3c67f [2022-11-25 17:06:23,037 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/data/a0ecf9800/70b1d9a3c0ba4fabb7b0a04845fe47f3 [2022-11-25 17:06:23,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:06:23,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:06:23,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:23,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:06:23,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:06:23,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cfad21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23, skipping insertion in model container [2022-11-25 17:06:23,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:06:23,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:06:23,310 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:06:23,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:23,499 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_6776d586-118a-42fc-bebf-d2400299ebad/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2022-11-25 17:06:23,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:23,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:23,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:23,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:23,523 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:06:23,559 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:06:23,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:23,601 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_6776d586-118a-42fc-bebf-d2400299ebad/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2022-11-25 17:06:23,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:23,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:06:23,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:06:23,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:23,669 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:06:23,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23 WrapperNode [2022-11-25 17:06:23,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:23,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:06:23,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:06:23,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:06:23,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,751 INFO L138 Inliner]: procedures = 176, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2022-11-25 17:06:23,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:06:23,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:06:23,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:06:23,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:06:23,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:06:23,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:06:23,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:06:23,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:06:23,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (1/1) ... [2022-11-25 17:06:23,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:06:23,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:06:23,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:06:23,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6776d586-118a-42fc-bebf-d2400299ebad/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:06:23,891 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 17:06:23,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 17:06:23,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:06:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:06:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:06:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:06:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:06:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:06:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:06:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:06:23,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:06:23,894 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 17:06:24,030 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:06:24,033 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:06:24,282 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:06:24,365 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:06:24,366 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:06:24,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:06:24 BoogieIcfgContainer [2022-11-25 17:06:24,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:06:24,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:06:24,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:06:24,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:06:24,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:06:23" (1/3) ... [2022-11-25 17:06:24,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ba019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:06:24, skipping insertion in model container [2022-11-25 17:06:24,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:23" (2/3) ... [2022-11-25 17:06:24,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ba019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:06:24, skipping insertion in model container [2022-11-25 17:06:24,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:06:24" (3/3) ... [2022-11-25 17:06:24,382 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2022-11-25 17:06:24,395 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:06:24,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:06:24,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-25 17:06:24,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:06:24,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:06:24,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 159 flow [2022-11-25 17:06:24,656 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-11-25 17:06:24,656 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:24,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2022-11-25 17:06:24,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 159 flow [2022-11-25 17:06:24,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 159 flow [2022-11-25 17:06:24,675 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:06:24,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 77 transitions, 159 flow [2022-11-25 17:06:24,704 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 77 transitions, 159 flow [2022-11-25 17:06:24,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 159 flow [2022-11-25 17:06:24,751 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-11-25 17:06:24,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:24,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2022-11-25 17:06:24,755 INFO L119 LiptonReduction]: Number of co-enabled transitions 1316 [2022-11-25 17:06:27,507 INFO L134 LiptonReduction]: Checked pairs total: 1192 [2022-11-25 17:06:27,507 INFO L136 LiptonReduction]: Total number of compositions: 83 [2022-11-25 17:06:27,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:27,530 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;@6ccb7ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:27,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-25 17:06:27,534 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:06:27,534 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:27,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:27,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:06:27,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-25 17:06:27,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash 13460790, now seen corresponding path program 1 times [2022-11-25 17:06:27,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:27,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048176205] [2022-11-25 17:06:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:27,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:27,700 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 17:06:27,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:27,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048176205] [2022-11-25 17:06:27,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048176205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:27,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:27,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142135414] [2022-11-25 17:06:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:27,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:06:27,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:06:27,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:06:27,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 160 [2022-11-25 17:06:27,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 37 flow. Second operand has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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 17:06:27,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:27,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 160 [2022-11-25 17:06:27,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:27,776 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2022-11-25 17:06:27,776 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:27,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2022-11-25 17:06:27,779 INFO L137 encePairwiseOnDemand]: 152/160 looper letters, 7 selfloop transitions, 0 changer transitions 0/8 dead transitions. [2022-11-25 17:06:27,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 35 flow [2022-11-25 17:06:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:06:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:06:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2022-11-25 17:06:27,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.440625 [2022-11-25 17:06:27,796 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2022-11-25 17:06:27,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2022-11-25 17:06:27,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:27,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2022-11-25 17:06:27,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 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 17:06:27,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 17:06:27,815 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 17:06:27,817 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 37 flow. Second operand 2 states and 141 transitions. [2022-11-25 17:06:27,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 35 flow [2022-11-25 17:06:27,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:27,823 INFO L231 Difference]: Finished difference. Result has 11 places, 8 transitions, 21 flow [2022-11-25 17:06:27,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=21, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2022-11-25 17:06:27,830 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, -7 predicate places. [2022-11-25 17:06:27,833 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 21 flow [2022-11-25 17:06:27,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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 17:06:27,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:27,834 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-25 17:06:27,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:06:27,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-25 17:06:27,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:27,839 INFO L85 PathProgramCache]: Analyzing trace with hash 50871968, now seen corresponding path program 1 times [2022-11-25 17:06:27,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:27,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757283587] [2022-11-25 17:06:27,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:27,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:27,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:27,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:27,933 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:06:27,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-25 17:06:27,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-25 17:06:27,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-25 17:06:27,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-25 17:06:27,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-25 17:06:27,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-25 17:06:27,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-25 17:06:27,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-25 17:06:27,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-25 17:06:27,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-25 17:06:27,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-25 17:06:27,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-25 17:06:27,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-25 17:06:27,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-25 17:06:27,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-25 17:06:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:06:27,944 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:06:27,947 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:06:27,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 17:06:27,993 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:06:27,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 125 transitions, 262 flow [2022-11-25 17:06:28,025 INFO L130 PetriNetUnfolder]: 7/149 cut-off events. [2022-11-25 17:06:28,026 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:06:28,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 149 events. 7/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 268 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2022-11-25 17:06:28,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 125 transitions, 262 flow [2022-11-25 17:06:28,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 125 transitions, 262 flow [2022-11-25 17:06:28,030 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:06:28,030 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 125 transitions, 262 flow [2022-11-25 17:06:28,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 125 transitions, 262 flow [2022-11-25 17:06:28,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 125 transitions, 262 flow [2022-11-25 17:06:28,059 INFO L130 PetriNetUnfolder]: 7/149 cut-off events. [2022-11-25 17:06:28,060 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:06:28,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 149 events. 7/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 268 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2022-11-25 17:06:28,066 INFO L119 LiptonReduction]: Number of co-enabled transitions 7144 [2022-11-25 17:06:30,998 INFO L134 LiptonReduction]: Checked pairs total: 11552 [2022-11-25 17:06:30,998 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-11-25 17:06:31,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:31,002 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;@6ccb7ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:31,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 17:06:31,005 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:06:31,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:31,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:31,005 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:06:31,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-25 17:06:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash 22790693, now seen corresponding path program 1 times [2022-11-25 17:06:31,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:31,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311225421] [2022-11-25 17:06:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:31,044 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 17:06:31,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:31,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311225421] [2022-11-25 17:06:31,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311225421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:31,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:31,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:31,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296317305] [2022-11-25 17:06:31,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:31,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:06:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:06:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:06:31,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 258 [2022-11-25 17:06:31,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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 17:06:31,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:31,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 258 [2022-11-25 17:06:31,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:31,135 INFO L130 PetriNetUnfolder]: 121/251 cut-off events. [2022-11-25 17:06:31,135 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-25 17:06:31,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 251 events. 121/251 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1049 event pairs, 95 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 188. Up to 208 conditions per place. [2022-11-25 17:06:31,138 INFO L137 encePairwiseOnDemand]: 245/258 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2022-11-25 17:06:31,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 94 flow [2022-11-25 17:06:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:06:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:06:31,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2022-11-25 17:06:31,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43992248062015504 [2022-11-25 17:06:31,142 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2022-11-25 17:06:31,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2022-11-25 17:06:31,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:31,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2022-11-25 17:06:31,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 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 17:06:31,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 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 17:06:31,146 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 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 17:06:31,146 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 88 flow. Second operand 2 states and 227 transitions. [2022-11-25 17:06:31,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 94 flow [2022-11-25 17:06:31,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 92 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:31,148 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 60 flow [2022-11-25 17:06:31,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2022-11-25 17:06:31,149 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -12 predicate places. [2022-11-25 17:06:31,149 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 60 flow [2022-11-25 17:06:31,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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 17:06:31,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:31,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:06:31,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:06:31,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-25 17:06:31,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:31,151 INFO L85 PathProgramCache]: Analyzing trace with hash 353216801, now seen corresponding path program 1 times [2022-11-25 17:06:31,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:31,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605560897] [2022-11-25 17:06:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:31,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:31,197 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 17:06:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:31,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605560897] [2022-11-25 17:06:31,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605560897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:31,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:31,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889672970] [2022-11-25 17:06:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:31,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:31,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 258 [2022-11-25 17:06:31,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 17:06:31,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:31,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 258 [2022-11-25 17:06:31,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:31,356 INFO L130 PetriNetUnfolder]: 265/467 cut-off events. [2022-11-25 17:06:31,356 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-25 17:06:31,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 467 events. 265/467 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2200 event pairs, 88 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 954. Up to 305 conditions per place. [2022-11-25 17:06:31,360 INFO L137 encePairwiseOnDemand]: 248/258 looper letters, 32 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2022-11-25 17:06:31,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 181 flow [2022-11-25 17:06:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2022-11-25 17:06:31,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41472868217054265 [2022-11-25 17:06:31,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2022-11-25 17:06:31,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2022-11-25 17:06:31,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:31,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2022-11-25 17:06:31,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 17:06:31,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 17:06:31,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 17:06:31,369 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 60 flow. Second operand 3 states and 321 transitions. [2022-11-25 17:06:31,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 181 flow [2022-11-25 17:06:31,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:31,371 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 128 flow [2022-11-25 17:06:31,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2022-11-25 17:06:31,372 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2022-11-25 17:06:31,372 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 128 flow [2022-11-25 17:06:31,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 17:06:31,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:31,373 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-25 17:06:31,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:06:31,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-25 17:06:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 792020815, now seen corresponding path program 1 times [2022-11-25 17:06:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:31,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436337032] [2022-11-25 17:06:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:31,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:31,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:31,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:31,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:06:31,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-25 17:06:31,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-25 17:06:31,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-25 17:06:31,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-25 17:06:31,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-25 17:06:31,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-25 17:06:31,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-25 17:06:31,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-25 17:06:31,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-25 17:06:31,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-25 17:06:31,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-25 17:06:31,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-25 17:06:31,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-25 17:06:31,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-25 17:06:31,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-25 17:06:31,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-25 17:06:31,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-25 17:06:31,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-25 17:06:31,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-25 17:06:31,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-25 17:06:31,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-25 17:06:31,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-25 17:06:31,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:06:31,408 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 17:06:31,409 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:06:31,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-25 17:06:31,448 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:06:31,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 173 transitions, 367 flow [2022-11-25 17:06:31,503 INFO L130 PetriNetUnfolder]: 10/210 cut-off events. [2022-11-25 17:06:31,503 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:06:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 210 events. 10/210 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 547 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2022-11-25 17:06:31,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 173 transitions, 367 flow [2022-11-25 17:06:31,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 173 transitions, 367 flow [2022-11-25 17:06:31,512 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:06:31,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 173 transitions, 367 flow [2022-11-25 17:06:31,513 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 173 transitions, 367 flow [2022-11-25 17:06:31,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 173 transitions, 367 flow [2022-11-25 17:06:31,547 INFO L130 PetriNetUnfolder]: 10/210 cut-off events. [2022-11-25 17:06:31,547 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-25 17:06:31,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 210 events. 10/210 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 547 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 154. Up to 8 conditions per place. [2022-11-25 17:06:31,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 17484 [2022-11-25 17:06:35,453 INFO L134 LiptonReduction]: Checked pairs total: 29635 [2022-11-25 17:06:35,453 INFO L136 LiptonReduction]: Total number of compositions: 180 [2022-11-25 17:06:35,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:35,461 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;@6ccb7ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:35,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-25 17:06:35,468 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-11-25 17:06:35,470 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:35,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:35,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:06:35,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:06:35,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:35,471 INFO L85 PathProgramCache]: Analyzing trace with hash 34993272, now seen corresponding path program 1 times [2022-11-25 17:06:35,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:35,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089326997] [2022-11-25 17:06:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:35,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:35,503 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 17:06:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089326997] [2022-11-25 17:06:35,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089326997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:35,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:35,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:35,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526128526] [2022-11-25 17:06:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:35,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:06:35,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:06:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:06:35,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 353 [2022-11-25 17:06:35,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 129 flow. Second operand has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 17:06:35,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:35,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 353 [2022-11-25 17:06:35,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:35,808 INFO L130 PetriNetUnfolder]: 1237/2011 cut-off events. [2022-11-25 17:06:35,808 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-25 17:06:35,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4007 conditions, 2011 events. 1237/2011 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10818 event pairs, 995 based on Foata normal form. 0/1641 useless extension candidates. Maximal degree in co-relation 497. Up to 1756 conditions per place. [2022-11-25 17:06:35,822 INFO L137 encePairwiseOnDemand]: 334/353 looper letters, 23 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2022-11-25 17:06:35,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 137 flow [2022-11-25 17:06:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:06:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:06:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 312 transitions. [2022-11-25 17:06:35,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44192634560906513 [2022-11-25 17:06:35,830 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 312 transitions. [2022-11-25 17:06:35,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 312 transitions. [2022-11-25 17:06:35,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:35,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 312 transitions. [2022-11-25 17:06:35,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 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 17:06:35,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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 17:06:35,836 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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 17:06:35,836 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 129 flow. Second operand 2 states and 312 transitions. [2022-11-25 17:06:35,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 137 flow [2022-11-25 17:06:35,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 131 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:35,841 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 85 flow [2022-11-25 17:06:35,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=85, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2022-11-25 17:06:35,844 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -18 predicate places. [2022-11-25 17:06:35,845 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 85 flow [2022-11-25 17:06:35,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 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 17:06:35,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:35,845 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:06:35,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:06:35,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:06:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1191608930, now seen corresponding path program 1 times [2022-11-25 17:06:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:35,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840123268] [2022-11-25 17:06:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:35,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:35,903 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 17:06:35,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:35,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840123268] [2022-11-25 17:06:35,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840123268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:35,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:35,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:35,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587623222] [2022-11-25 17:06:35,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:35,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:35,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:35,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:35,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:35,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 353 [2022-11-25 17:06:35,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 17:06:35,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:35,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 353 [2022-11-25 17:06:35,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:36,754 INFO L130 PetriNetUnfolder]: 4617/6744 cut-off events. [2022-11-25 17:06:36,754 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2022-11-25 17:06:36,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13736 conditions, 6744 events. 4617/6744 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39065 event pairs, 1682 based on Foata normal form. 0/5884 useless extension candidates. Maximal degree in co-relation 13730. Up to 4247 conditions per place. [2022-11-25 17:06:36,805 INFO L137 encePairwiseOnDemand]: 338/353 looper letters, 47 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2022-11-25 17:06:36,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 267 flow [2022-11-25 17:06:36,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:36,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-11-25 17:06:36,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4154863078375826 [2022-11-25 17:06:36,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-11-25 17:06:36,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-11-25 17:06:36,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:36,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-11-25 17:06:36,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 17:06:36,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 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 17:06:36,815 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 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 17:06:36,815 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 85 flow. Second operand 3 states and 440 transitions. [2022-11-25 17:06:36,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 267 flow [2022-11-25 17:06:36,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 267 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:36,823 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 187 flow [2022-11-25 17:06:36,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2022-11-25 17:06:36,825 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -14 predicate places. [2022-11-25 17:06:36,825 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 187 flow [2022-11-25 17:06:36,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 17:06:36,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:36,827 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-25 17:06:36,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:06:36,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-25 17:06:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1639412289, now seen corresponding path program 1 times [2022-11-25 17:06:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:36,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484049333] [2022-11-25 17:06:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:36,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:36,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:36,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:36,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:06:36,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-25 17:06:36,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-11-25 17:06:36,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-11-25 17:06:36,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-11-25 17:06:36,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-11-25 17:06:36,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-11-25 17:06:36,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-11-25 17:06:36,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-11-25 17:06:36,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-11-25 17:06:36,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-11-25 17:06:36,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-11-25 17:06:36,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-11-25 17:06:36,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-11-25 17:06:36,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-11-25 17:06:36,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-11-25 17:06:36,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-11-25 17:06:36,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-11-25 17:06:36,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-11-25 17:06:36,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-11-25 17:06:36,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-11-25 17:06:36,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-11-25 17:06:36,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-11-25 17:06:36,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-11-25 17:06:36,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-11-25 17:06:36,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-11-25 17:06:36,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-11-25 17:06:36,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-11-25 17:06:36,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-11-25 17:06:36,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-11-25 17:06:36,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:06:36,900 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-25 17:06:36,901 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:06:36,901 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-25 17:06:36,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:06:36,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 221 transitions, 474 flow [2022-11-25 17:06:37,047 INFO L130 PetriNetUnfolder]: 13/271 cut-off events. [2022-11-25 17:06:37,048 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 17:06:37,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 271 events. 13/271 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 827 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 218. Up to 10 conditions per place. [2022-11-25 17:06:37,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 221 transitions, 474 flow [2022-11-25 17:06:37,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 221 transitions, 474 flow [2022-11-25 17:06:37,056 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:06:37,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 221 transitions, 474 flow [2022-11-25 17:06:37,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 221 transitions, 474 flow [2022-11-25 17:06:37,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 221 transitions, 474 flow [2022-11-25 17:06:37,113 INFO L130 PetriNetUnfolder]: 13/271 cut-off events. [2022-11-25 17:06:37,113 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 17:06:37,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 271 events. 13/271 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 827 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 218. Up to 10 conditions per place. [2022-11-25 17:06:37,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 32336 [2022-11-25 17:06:41,954 INFO L134 LiptonReduction]: Checked pairs total: 53120 [2022-11-25 17:06:41,954 INFO L136 LiptonReduction]: Total number of compositions: 230 [2022-11-25 17:06:41,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:41,957 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;@6ccb7ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:41,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-25 17:06:41,958 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:06:41,959 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:41,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:41,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:06:41,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:06:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash 50227970, now seen corresponding path program 1 times [2022-11-25 17:06:41,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:41,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585508941] [2022-11-25 17:06:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:41,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:41,985 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 17:06:41,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:41,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585508941] [2022-11-25 17:06:41,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585508941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:41,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:41,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:41,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220535366] [2022-11-25 17:06:41,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:41,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:06:41,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:41,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:06:41,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:06:41,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 451 [2022-11-25 17:06:41,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 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 17:06:41,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:41,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 451 [2022-11-25 17:06:41,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:43,988 INFO L130 PetriNetUnfolder]: 10525/15163 cut-off events. [2022-11-25 17:06:43,988 INFO L131 PetriNetUnfolder]: For 3148/3148 co-relation queries the response was YES. [2022-11-25 17:06:44,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30624 conditions, 15163 events. 10525/15163 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 92075 event pairs, 8555 based on Foata normal form. 0/12422 useless extension candidates. Maximal degree in co-relation 4069. Up to 13636 conditions per place. [2022-11-25 17:06:44,118 INFO L137 encePairwiseOnDemand]: 426/451 looper letters, 30 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2022-11-25 17:06:44,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 182 flow [2022-11-25 17:06:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:06:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:06:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 397 transitions. [2022-11-25 17:06:44,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4401330376940133 [2022-11-25 17:06:44,121 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 397 transitions. [2022-11-25 17:06:44,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 397 transitions. [2022-11-25 17:06:44,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:44,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 397 transitions. [2022-11-25 17:06:44,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 198.5) internal successors, (397), 2 states have internal predecessors, (397), 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 17:06:44,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 451.0) internal successors, (1353), 3 states have internal predecessors, (1353), 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 17:06:44,126 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 451.0) internal successors, (1353), 3 states have internal predecessors, (1353), 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 17:06:44,127 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 172 flow. Second operand 2 states and 397 transitions. [2022-11-25 17:06:44,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 182 flow [2022-11-25 17:06:44,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 170 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:44,134 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 110 flow [2022-11-25 17:06:44,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2022-11-25 17:06:44,136 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -24 predicate places. [2022-11-25 17:06:44,137 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 110 flow [2022-11-25 17:06:44,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 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 17:06:44,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:44,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:06:44,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:06:44,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:06:44,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:44,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1694098390, now seen corresponding path program 1 times [2022-11-25 17:06:44,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:44,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773114703] [2022-11-25 17:06:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:44,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:44,181 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 17:06:44,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:44,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773114703] [2022-11-25 17:06:44,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773114703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:44,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:44,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:06:44,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528050584] [2022-11-25 17:06:44,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:44,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:06:44,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:44,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:06:44,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:06:44,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 451 [2022-11-25 17:06:44,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 17:06:44,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:44,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 451 [2022-11-25 17:06:44,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:52,079 INFO L130 PetriNetUnfolder]: 65293/86850 cut-off events. [2022-11-25 17:06:52,079 INFO L131 PetriNetUnfolder]: For 3036/3036 co-relation queries the response was YES. [2022-11-25 17:06:52,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176279 conditions, 86850 events. 65293/86850 cut-off events. For 3036/3036 co-relation queries the response was YES. Maximal size of possible extension queue 3576. Compared 558173 event pairs, 24624 based on Foata normal form. 0/74817 useless extension candidates. Maximal degree in co-relation 176272. Up to 53039 conditions per place. [2022-11-25 17:06:52,649 INFO L137 encePairwiseOnDemand]: 431/451 looper letters, 62 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2022-11-25 17:06:52,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 353 flow [2022-11-25 17:06:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:06:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:06:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2022-11-25 17:06:52,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4131559497413156 [2022-11-25 17:06:52,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2022-11-25 17:06:52,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2022-11-25 17:06:52,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:52,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2022-11-25 17:06:52,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 17:06:52,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 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 17:06:52,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 451.0) internal successors, (1804), 4 states have internal predecessors, (1804), 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 17:06:52,672 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 110 flow. Second operand 3 states and 559 transitions. [2022-11-25 17:06:52,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 353 flow [2022-11-25 17:06:52,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:06:52,678 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 246 flow [2022-11-25 17:06:52,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2022-11-25 17:06:52,679 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2022-11-25 17:06:52,679 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 246 flow [2022-11-25 17:06:52,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 17:06:52,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:52,680 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:06:52,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:06:52,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:06:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 604870069, now seen corresponding path program 1 times [2022-11-25 17:06:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824738435] [2022-11-25 17:06:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:52,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:06:52,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:52,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824738435] [2022-11-25 17:06:52,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824738435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:52,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:52,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:06:52,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620112245] [2022-11-25 17:06:52,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:52,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:06:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:52,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:06:52,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:06:52,874 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 451 [2022-11-25 17:06:52,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 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 17:06:52,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:52,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 451 [2022-11-25 17:06:52,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:06:53,576 INFO L130 PetriNetUnfolder]: 3308/5508 cut-off events. [2022-11-25 17:06:53,576 INFO L131 PetriNetUnfolder]: For 3178/3178 co-relation queries the response was YES. [2022-11-25 17:06:53,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14848 conditions, 5508 events. 3308/5508 cut-off events. For 3178/3178 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35062 event pairs, 123 based on Foata normal form. 1156/6643 useless extension candidates. Maximal degree in co-relation 14839. Up to 2692 conditions per place. [2022-11-25 17:06:53,607 INFO L137 encePairwiseOnDemand]: 438/451 looper letters, 65 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2022-11-25 17:06:53,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 97 transitions, 567 flow [2022-11-25 17:06:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:06:53,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:06:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 923 transitions. [2022-11-25 17:06:53,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40931263858093125 [2022-11-25 17:06:53,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 923 transitions. [2022-11-25 17:06:53,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 923 transitions. [2022-11-25 17:06:53,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:06:53,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 923 transitions. [2022-11-25 17:06:53,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.6) internal successors, (923), 5 states have internal predecessors, (923), 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 17:06:53,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 451.0) internal successors, (2706), 6 states have internal predecessors, (2706), 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 17:06:53,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 451.0) internal successors, (2706), 6 states have internal predecessors, (2706), 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 17:06:53,624 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 246 flow. Second operand 5 states and 923 transitions. [2022-11-25 17:06:53,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 97 transitions, 567 flow [2022-11-25 17:06:53,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 97 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:06:53,644 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 240 flow [2022-11-25 17:06:53,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=451, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2022-11-25 17:06:53,646 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2022-11-25 17:06:53,647 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 240 flow [2022-11-25 17:06:53,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 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 17:06:53,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:53,647 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-25 17:06:53,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:06:53,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-25 17:06:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash -137507453, now seen corresponding path program 1 times [2022-11-25 17:06:53,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:53,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915017902] [2022-11-25 17:06:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:53,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:53,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:53,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:06:53,687 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-11-25 17:06:53,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-11-25 17:06:53,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-11-25 17:06:53,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-11-25 17:06:53,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-11-25 17:06:53,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-11-25 17:06:53,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-11-25 17:06:53,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-11-25 17:06:53,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-11-25 17:06:53,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-11-25 17:06:53,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-11-25 17:06:53,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-11-25 17:06:53,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-11-25 17:06:53,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-11-25 17:06:53,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-11-25 17:06:53,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-11-25 17:06:53,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-11-25 17:06:53,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-11-25 17:06:53,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-11-25 17:06:53,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-11-25 17:06:53,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-11-25 17:06:53,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-11-25 17:06:53,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-11-25 17:06:53,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-11-25 17:06:53,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-11-25 17:06:53,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-11-25 17:06:53,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-11-25 17:06:53,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-11-25 17:06:53,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-11-25 17:06:53,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-11-25 17:06:53,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-11-25 17:06:53,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-11-25 17:06:53,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-11-25 17:06:53,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-11-25 17:06:53,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-11-25 17:06:53,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-11-25 17:06:53,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:06:53,696 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-25 17:06:53,697 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 17:06:53,697 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-25 17:06:53,731 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:06:53,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 269 transitions, 583 flow [2022-11-25 17:06:53,784 INFO L130 PetriNetUnfolder]: 16/332 cut-off events. [2022-11-25 17:06:53,784 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-25 17:06:53,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 332 events. 16/332 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1133 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 284. Up to 12 conditions per place. [2022-11-25 17:06:53,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 269 transitions, 583 flow [2022-11-25 17:06:53,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 269 transitions, 583 flow [2022-11-25 17:06:53,790 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:06:53,790 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 269 transitions, 583 flow [2022-11-25 17:06:53,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 269 transitions, 583 flow [2022-11-25 17:06:53,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 269 transitions, 583 flow [2022-11-25 17:06:53,847 INFO L130 PetriNetUnfolder]: 16/332 cut-off events. [2022-11-25 17:06:53,848 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-25 17:06:53,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 332 events. 16/332 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1133 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 284. Up to 12 conditions per place. [2022-11-25 17:06:53,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 51700 [2022-11-25 17:06:59,647 INFO L134 LiptonReduction]: Checked pairs total: 89337 [2022-11-25 17:06:59,648 INFO L136 LiptonReduction]: Total number of compositions: 289 [2022-11-25 17:06:59,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:06:59,650 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;@6ccb7ced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:06:59,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-11-25 17:06:59,651 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-11-25 17:06:59,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:06:59,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:06:59,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 17:06:59,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-25 17:06:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 68997476, now seen corresponding path program 1 times [2022-11-25 17:06:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:59,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456988393] [2022-11-25 17:06:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:06:59,674 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 17:06:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:06:59,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456988393] [2022-11-25 17:06:59,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456988393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:06:59,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:06:59,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:06:59,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241953468] [2022-11-25 17:06:59,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:06:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:06:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:06:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:06:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:06:59,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 558 [2022-11-25 17:06:59,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 217 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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 17:06:59,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:06:59,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 558 [2022-11-25 17:06:59,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:10,576 INFO L130 PetriNetUnfolder]: 81805/109627 cut-off events. [2022-11-25 17:07:10,576 INFO L131 PetriNetUnfolder]: For 29644/29644 co-relation queries the response was YES. [2022-11-25 17:07:10,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223441 conditions, 109627 events. 81805/109627 cut-off events. For 29644/29644 co-relation queries the response was YES. Maximal size of possible extension queue 3392. Compared 717977 event pairs, 66875 based on Foata normal form. 0/90074 useless extension candidates. Maximal degree in co-relation 31021. Up to 100468 conditions per place. [2022-11-25 17:07:11,223 INFO L137 encePairwiseOnDemand]: 527/558 looper letters, 37 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2022-11-25 17:07:11,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 229 flow [2022-11-25 17:07:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:07:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:07:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 482 transitions. [2022-11-25 17:07:11,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43189964157706096 [2022-11-25 17:07:11,226 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 482 transitions. [2022-11-25 17:07:11,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 482 transitions. [2022-11-25 17:07:11,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:11,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 482 transitions. [2022-11-25 17:07:11,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 241.0) internal successors, (482), 2 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:11,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 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 17:07:11,232 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 558.0) internal successors, (1674), 3 states have internal predecessors, (1674), 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 17:07:11,232 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 217 flow. Second operand 2 states and 482 transitions. [2022-11-25 17:07:11,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 229 flow [2022-11-25 17:07:11,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 209 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-25 17:07:11,266 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 135 flow [2022-11-25 17:07:11,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=135, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2022-11-25 17:07:11,267 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, -30 predicate places. [2022-11-25 17:07:11,267 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 135 flow [2022-11-25 17:07:11,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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 17:07:11,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:11,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:11,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:07:11,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-11-25 17:07:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1783487603, now seen corresponding path program 1 times [2022-11-25 17:07:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:11,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596343257] [2022-11-25 17:07:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:11,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:11,290 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 17:07:11,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:11,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596343257] [2022-11-25 17:07:11,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596343257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:11,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:11,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:07:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646843584] [2022-11-25 17:07:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:11,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:07:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:07:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:07:11,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 558 [2022-11-25 17:07:11,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 17:07:11,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:11,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 558 [2022-11-25 17:07:11,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand