./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 10d5067d95273951a014725afb4753c98c29896d9675321f4fa3b00f339e7930 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:01:31,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:01:31,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-26 12:01:31,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:01:31,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:01:31,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:01:31,766 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:01:31,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:01:31,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:01:31,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:01:31,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:01:31,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:01:31,777 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:01:31,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:01:31,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:01:31,779 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:01:31,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:01:31,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:01:31,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:01:31,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:01:31,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:01:31,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:01:31,783 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-26 12:01:31,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:01:31,785 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:01:31,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:01:31,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:01:31,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:01:31,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:01:31,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:01:31,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:31,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:01:31,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:01:31,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:01:31,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:01:31,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:01:31,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:01:31,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:01:31,793 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:01:31,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:01:31,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:01:31,794 INFO L153 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_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10d5067d95273951a014725afb4753c98c29896d9675321f4fa3b00f339e7930 [2023-11-26 12:01:32,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:01:32,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:01:32,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:01:32,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:01:32,214 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:01:32,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-deagle/reorder_c11_bad-10.i [2023-11-26 12:01:35,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:01:35,518 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:01:35,519 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/sv-benchmarks/c/pthread-deagle/reorder_c11_bad-10.i [2023-11-26 12:01:35,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/data/bf09ab454/e7a0759f20cc49a1b5ebeb90ddbdaffb/FLAG9ff7df509 [2023-11-26 12:01:35,567 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/data/bf09ab454/e7a0759f20cc49a1b5ebeb90ddbdaffb [2023-11-26 12:01:35,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:01:35,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:01:35,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:35,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:01:35,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:01:35,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:35" (1/1) ... [2023-11-26 12:01:35,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353b858f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:35, skipping insertion in model container [2023-11-26 12:01:35,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:35" (1/1) ... [2023-11-26 12:01:35,644 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:01:36,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:36,106 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:01:36,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:01:36,224 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:01:36,225 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:01:36,233 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:01:36,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36 WrapperNode [2023-11-26 12:01:36,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:01:36,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:36,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:01:36,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:01:36,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,289 INFO L138 Inliner]: procedures = 163, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 168 [2023-11-26 12:01:36,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:01:36,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:01:36,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:01:36,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:01:36,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:01:36,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:01:36,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:01:36,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:01:36,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (1/1) ... [2023-11-26 12:01:36,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:01:36,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:36,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:01:36,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:01:36,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 12:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2023-11-26 12:01:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2023-11-26 12:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 12:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 12:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:01:36,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:01:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:01:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2023-11-26 12:01:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2023-11-26 12:01:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 12:01:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 12:01:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:01:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:01:36,419 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:01:36,561 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:01:36,563 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:01:37,001 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:01:37,041 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:01:37,042 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-26 12:01:37,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:37 BoogieIcfgContainer [2023-11-26 12:01:37,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:01:37,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:01:37,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:01:37,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:01:37,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:35" (1/3) ... [2023-11-26 12:01:37,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7447c560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:37, skipping insertion in model container [2023-11-26 12:01:37,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:36" (2/3) ... [2023-11-26 12:01:37,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7447c560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:37, skipping insertion in model container [2023-11-26 12:01:37,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:37" (3/3) ... [2023-11-26 12:01:37,056 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-10.i [2023-11-26 12:01:37,066 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:01:37,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:01:37,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-26 12:01:37,079 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:01:37,161 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 12:01:37,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 211 transitions, 442 flow [2023-11-26 12:01:37,393 INFO L124 PetriNetUnfolderBase]: 32/530 cut-off events. [2023-11-26 12:01:37,393 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 12:01:37,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 530 events. 32/530 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2220 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 253. Up to 8 conditions per place. [2023-11-26 12:01:37,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 211 transitions, 442 flow [2023-11-26 12:01:37,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 211 transitions, 442 flow [2023-11-26 12:01:37,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:37,447 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=LoopHeads, 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;@334220fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:37,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-26 12:01:37,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:37,454 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-26 12:01:37,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:37,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:37,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:37,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-26 12:01:37,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1380371389, now seen corresponding path program 1 times [2023-11-26 12:01:37,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:37,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060135211] [2023-11-26 12:01:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:37,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060135211] [2023-11-26 12:01:37,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060135211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:37,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:37,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463637983] [2023-11-26 12:01:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:37,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:38,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 211 [2023-11-26 12:01:38,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 211 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:38,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:38,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 211 [2023-11-26 12:01:38,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:38,238 INFO L124 PetriNetUnfolderBase]: 78/695 cut-off events. [2023-11-26 12:01:38,238 INFO L125 PetriNetUnfolderBase]: For 49/57 co-relation queries the response was YES. [2023-11-26 12:01:38,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 695 events. 78/695 cut-off events. For 49/57 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3527 event pairs, 64 based on Foata normal form. 84/639 useless extension candidates. Maximal degree in co-relation 601. Up to 205 conditions per place. [2023-11-26 12:01:38,251 INFO L140 encePairwiseOnDemand]: 200/211 looper letters, 31 selfloop transitions, 2 changer transitions 0/199 dead transitions. [2023-11-26 12:01:38,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 199 transitions, 484 flow [2023-11-26 12:01:38,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-11-26 12:01:38,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8625592417061612 [2023-11-26 12:01:38,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-11-26 12:01:38,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-11-26 12:01:38,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:38,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-11-26 12:01:38,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2023-11-26 12:01:38,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:38,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:38,307 INFO L175 Difference]: Start difference. First operand has 203 places, 211 transitions, 442 flow. Second operand 3 states and 546 transitions. [2023-11-26 12:01:38,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 199 transitions, 484 flow [2023-11-26 12:01:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 199 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:38,322 INFO L231 Difference]: Finished difference. Result has 199 places, 199 transitions, 422 flow [2023-11-26 12:01:38,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=199, PETRI_TRANSITIONS=199} [2023-11-26 12:01:38,330 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -4 predicate places. [2023-11-26 12:01:38,331 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 199 transitions, 422 flow [2023-11-26 12:01:38,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:38,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:38,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:38,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:01:38,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-26 12:01:38,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1667384214, now seen corresponding path program 1 times [2023-11-26 12:01:38,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:38,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893039069] [2023-11-26 12:01:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:38,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:38,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:38,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893039069] [2023-11-26 12:01:38,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893039069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:38,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:38,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:38,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062224149] [2023-11-26 12:01:38,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:38,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:38,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 211 [2023-11-26 12:01:38,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 199 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:38,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:38,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 211 [2023-11-26 12:01:38,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:38,829 INFO L124 PetriNetUnfolderBase]: 120/986 cut-off events. [2023-11-26 12:01:38,829 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-26 12:01:38,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 986 events. 120/986 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5533 event pairs, 78 based on Foata normal form. 0/873 useless extension candidates. Maximal degree in co-relation 1285. Up to 243 conditions per place. [2023-11-26 12:01:38,840 INFO L140 encePairwiseOnDemand]: 188/211 looper letters, 31 selfloop transitions, 11 changer transitions 0/189 dead transitions. [2023-11-26 12:01:38,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 189 transitions, 486 flow [2023-11-26 12:01:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-11-26 12:01:38,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7962085308056872 [2023-11-26 12:01:38,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-11-26 12:01:38,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-11-26 12:01:38,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:38,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-11-26 12:01:38,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2023-11-26 12:01:38,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:38,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:38,852 INFO L175 Difference]: Start difference. First operand has 199 places, 199 transitions, 422 flow. Second operand 3 states and 504 transitions. [2023-11-26 12:01:38,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 189 transitions, 486 flow [2023-11-26 12:01:38,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:38,863 INFO L231 Difference]: Finished difference. Result has 187 places, 187 transitions, 416 flow [2023-11-26 12:01:38,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=187, PETRI_TRANSITIONS=187} [2023-11-26 12:01:38,864 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -16 predicate places. [2023-11-26 12:01:38,865 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 187 transitions, 416 flow [2023-11-26 12:01:38,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:38,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:38,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:38,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:01:38,871 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-26 12:01:38,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1481892151, now seen corresponding path program 1 times [2023-11-26 12:01:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:38,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913244073] [2023-11-26 12:01:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:39,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913244073] [2023-11-26 12:01:39,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913244073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:39,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:39,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755395818] [2023-11-26 12:01:39,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:39,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:39,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:39,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 211 [2023-11-26 12:01:39,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 187 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 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) [2023-11-26 12:01:39,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:39,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 211 [2023-11-26 12:01:39,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:39,211 INFO L124 PetriNetUnfolderBase]: 27/463 cut-off events. [2023-11-26 12:01:39,211 INFO L125 PetriNetUnfolderBase]: For 32/36 co-relation queries the response was YES. [2023-11-26 12:01:39,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 463 events. 27/463 cut-off events. For 32/36 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1391 event pairs, 10 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 399. Up to 39 conditions per place. [2023-11-26 12:01:39,216 INFO L140 encePairwiseOnDemand]: 199/211 looper letters, 17 selfloop transitions, 8 changer transitions 9/192 dead transitions. [2023-11-26 12:01:39,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 192 transitions, 484 flow [2023-11-26 12:01:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-11-26 12:01:39,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9052132701421801 [2023-11-26 12:01:39,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-11-26 12:01:39,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-11-26 12:01:39,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:39,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-11-26 12:01:39,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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) [2023-11-26 12:01:39,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:39,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:39,227 INFO L175 Difference]: Start difference. First operand has 187 places, 187 transitions, 416 flow. Second operand 3 states and 573 transitions. [2023-11-26 12:01:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 192 transitions, 484 flow [2023-11-26 12:01:39,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 192 transitions, 462 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:39,234 INFO L231 Difference]: Finished difference. Result has 188 places, 179 transitions, 410 flow [2023-11-26 12:01:39,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2023-11-26 12:01:39,236 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -15 predicate places. [2023-11-26 12:01:39,236 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 410 flow [2023-11-26 12:01:39,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 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) [2023-11-26 12:01:39,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:39,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:39,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:01:39,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-26 12:01:39,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1156726824, now seen corresponding path program 1 times [2023-11-26 12:01:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:39,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337470368] [2023-11-26 12:01:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:39,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337470368] [2023-11-26 12:01:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337470368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:39,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:39,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:39,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34315379] [2023-11-26 12:01:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:39,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:39,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:39,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:39,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 211 [2023-11-26 12:01:39,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:39,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:39,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 211 [2023-11-26 12:01:39,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:39,620 INFO L124 PetriNetUnfolderBase]: 63/661 cut-off events. [2023-11-26 12:01:39,620 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-26 12:01:39,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 661 events. 63/661 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2543 event pairs, 49 based on Foata normal form. 0/601 useless extension candidates. Maximal degree in co-relation 689. Up to 151 conditions per place. [2023-11-26 12:01:39,627 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 32 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2023-11-26 12:01:39,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 180 transitions, 480 flow [2023-11-26 12:01:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-26 12:01:39,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8515007898894155 [2023-11-26 12:01:39,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-26 12:01:39,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-26 12:01:39,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:39,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-26 12:01:39,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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) [2023-11-26 12:01:39,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:39,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:39,638 INFO L175 Difference]: Start difference. First operand has 188 places, 179 transitions, 410 flow. Second operand 3 states and 539 transitions. [2023-11-26 12:01:39,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 180 transitions, 480 flow [2023-11-26 12:01:39,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 180 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:39,646 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 404 flow [2023-11-26 12:01:39,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2023-11-26 12:01:39,647 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -24 predicate places. [2023-11-26 12:01:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 404 flow [2023-11-26 12:01:39,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:01:39,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:39,649 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:39,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:01:39,649 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-26 12:01:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2006037886, now seen corresponding path program 1 times [2023-11-26 12:01:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314815526] [2023-11-26 12:01:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314815526] [2023-11-26 12:01:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314815526] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490857701] [2023-11-26 12:01:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:39,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:39,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:39,877 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:39,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:01:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:39,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:01:39,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:01:40,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:40,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490857701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:40,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:40,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:01:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771500903] [2023-11-26 12:01:40,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:40,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:40,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:40,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 211 [2023-11-26 12:01:40,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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) [2023-11-26 12:01:40,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:40,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 211 [2023-11-26 12:01:40,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:40,281 INFO L124 PetriNetUnfolderBase]: 63/638 cut-off events. [2023-11-26 12:01:40,281 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-26 12:01:40,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 638 events. 63/638 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2432 event pairs, 49 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 771. Up to 151 conditions per place. [2023-11-26 12:01:40,287 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 32 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2023-11-26 12:01:40,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 179 transitions, 474 flow [2023-11-26 12:01:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-26 12:01:40,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8515007898894155 [2023-11-26 12:01:40,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-26 12:01:40,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-26 12:01:40,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:40,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-26 12:01:40,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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) [2023-11-26 12:01:40,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:40,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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) [2023-11-26 12:01:40,297 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 404 flow. Second operand 3 states and 539 transitions. [2023-11-26 12:01:40,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 179 transitions, 474 flow [2023-11-26 12:01:40,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 179 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:40,303 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 402 flow [2023-11-26 12:01:40,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2023-11-26 12:01:40,305 INFO L281 CegarLoopForPetriNet]: 203 programPoint places, -25 predicate places. [2023-11-26 12:01:40,305 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 402 flow [2023-11-26 12:01:40,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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) [2023-11-26 12:01:40,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:40,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:40,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:40,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:40,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-11-26 12:01:40,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1112452774, now seen corresponding path program 1 times [2023-11-26 12:01:40,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:40,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818704635] [2023-11-26 12:01:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:40,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:01:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:40,611 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:01:40,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:01:40,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2023-11-26 12:01:40,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-11-26 12:01:40,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-11-26 12:01:40,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-11-26 12:01:40,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-11-26 12:01:40,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-11-26 12:01:40,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-11-26 12:01:40,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2023-11-26 12:01:40,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-11-26 12:01:40,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-11-26 12:01:40,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-11-26 12:01:40,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-11-26 12:01:40,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-11-26 12:01:40,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-11-26 12:01:40,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-11-26 12:01:40,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2023-11-26 12:01:40,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-11-26 12:01:40,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-11-26 12:01:40,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-11-26 12:01:40,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2023-11-26 12:01:40,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2023-11-26 12:01:40,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-11-26 12:01:40,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-11-26 12:01:40,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-11-26 12:01:40,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-11-26 12:01:40,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-11-26 12:01:40,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2023-11-26 12:01:40,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-11-26 12:01:40,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-11-26 12:01:40,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 36 remaining) [2023-11-26 12:01:40,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-11-26 12:01:40,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-11-26 12:01:40,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-11-26 12:01:40,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-11-26 12:01:40,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2023-11-26 12:01:40,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-11-26 12:01:40,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:01:40,630 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 12:01:40,634 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:01:40,634 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-26 12:01:40,724 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-26 12:01:40,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 266 transitions, 576 flow [2023-11-26 12:01:41,062 INFO L124 PetriNetUnfolderBase]: 131/1780 cut-off events. [2023-11-26 12:01:41,063 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 12:01:41,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1780 events. 131/1780 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 10680 event pairs, 2 based on Foata normal form. 0/1409 useless extension candidates. Maximal degree in co-relation 1002. Up to 32 conditions per place. [2023-11-26 12:01:41,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 266 transitions, 576 flow [2023-11-26 12:01:41,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 266 transitions, 576 flow [2023-11-26 12:01:41,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:41,114 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=LoopHeads, 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;@334220fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:41,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-26 12:01:41,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:41,120 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-26 12:01:41,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:41,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:41,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:41,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:41,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 663279037, now seen corresponding path program 1 times [2023-11-26 12:01:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652829743] [2023-11-26 12:01:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:41,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:41,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:41,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:41,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652829743] [2023-11-26 12:01:41,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652829743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:41,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:41,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011001731] [2023-11-26 12:01:41,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:41,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:41,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:41,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 266 [2023-11-26 12:01:41,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 266 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-11-26 12:01:41,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:41,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 266 [2023-11-26 12:01:41,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:42,446 INFO L124 PetriNetUnfolderBase]: 1117/4297 cut-off events. [2023-11-26 12:01:42,447 INFO L125 PetriNetUnfolderBase]: For 714/922 co-relation queries the response was YES. [2023-11-26 12:01:42,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 4297 events. 1117/4297 cut-off events. For 714/922 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 34095 event pairs, 985 based on Foata normal form. 1640/5205 useless extension candidates. Maximal degree in co-relation 4569. Up to 2064 conditions per place. [2023-11-26 12:01:42,531 INFO L140 encePairwiseOnDemand]: 251/266 looper letters, 39 selfloop transitions, 2 changer transitions 0/247 dead transitions. [2023-11-26 12:01:42,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 247 transitions, 620 flow [2023-11-26 12:01:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-11-26 12:01:42,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2023-11-26 12:01:42,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-11-26 12:01:42,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-11-26 12:01:42,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:42,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-11-26 12:01:42,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2023-11-26 12:01:42,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:42,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:42,543 INFO L175 Difference]: Start difference. First operand has 253 places, 266 transitions, 576 flow. Second operand 3 states and 684 transitions. [2023-11-26 12:01:42,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 247 transitions, 620 flow [2023-11-26 12:01:42,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 247 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:42,551 INFO L231 Difference]: Finished difference. Result has 244 places, 247 transitions, 542 flow [2023-11-26 12:01:42,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=244, PETRI_TRANSITIONS=247} [2023-11-26 12:01:42,552 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -9 predicate places. [2023-11-26 12:01:42,553 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 247 transitions, 542 flow [2023-11-26 12:01:42,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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) [2023-11-26 12:01:42,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:42,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:42,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:01:42,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:42,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1398050190, now seen corresponding path program 1 times [2023-11-26 12:01:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868004439] [2023-11-26 12:01:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:42,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:42,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:42,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868004439] [2023-11-26 12:01:42,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868004439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:42,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:42,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:42,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138595684] [2023-11-26 12:01:42,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:42,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:42,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:42,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 266 [2023-11-26 12:01:42,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 247 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2023-11-26 12:01:42,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:42,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 266 [2023-11-26 12:01:42,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:44,485 INFO L124 PetriNetUnfolderBase]: 1641/6801 cut-off events. [2023-11-26 12:01:44,485 INFO L125 PetriNetUnfolderBase]: For 649/685 co-relation queries the response was YES. [2023-11-26 12:01:44,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10021 conditions, 6801 events. 1641/6801 cut-off events. For 649/685 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 56027 event pairs, 1169 based on Foata normal form. 0/6122 useless extension candidates. Maximal degree in co-relation 9990. Up to 2412 conditions per place. [2023-11-26 12:01:44,619 INFO L140 encePairwiseOnDemand]: 243/266 looper letters, 41 selfloop transitions, 11 changer transitions 0/239 dead transitions. [2023-11-26 12:01:44,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 630 flow [2023-11-26 12:01:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:44,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-11-26 12:01:44,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8020050125313283 [2023-11-26 12:01:44,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-11-26 12:01:44,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-11-26 12:01:44,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:44,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-11-26 12:01:44,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2023-11-26 12:01:44,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:44,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:44,631 INFO L175 Difference]: Start difference. First operand has 244 places, 247 transitions, 542 flow. Second operand 3 states and 640 transitions. [2023-11-26 12:01:44,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 630 flow [2023-11-26 12:01:44,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:44,639 INFO L231 Difference]: Finished difference. Result has 232 places, 235 transitions, 536 flow [2023-11-26 12:01:44,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=536, PETRI_PLACES=232, PETRI_TRANSITIONS=235} [2023-11-26 12:01:44,641 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -21 predicate places. [2023-11-26 12:01:44,641 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 235 transitions, 536 flow [2023-11-26 12:01:44,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2023-11-26 12:01:44,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:44,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:44,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:01:44,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:44,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash -149754057, now seen corresponding path program 1 times [2023-11-26 12:01:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:44,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828981291] [2023-11-26 12:01:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:44,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828981291] [2023-11-26 12:01:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828981291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:44,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:44,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:01:44,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750055333] [2023-11-26 12:01:44,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:44,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 266 [2023-11-26 12:01:44,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 235 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2023-11-26 12:01:44,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:44,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 266 [2023-11-26 12:01:44,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:46,029 INFO L124 PetriNetUnfolderBase]: 630/4766 cut-off events. [2023-11-26 12:01:46,029 INFO L125 PetriNetUnfolderBase]: For 775/817 co-relation queries the response was YES. [2023-11-26 12:01:46,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 4766 events. 630/4766 cut-off events. For 775/817 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 40231 event pairs, 228 based on Foata normal form. 42/4314 useless extension candidates. Maximal degree in co-relation 4151. Up to 682 conditions per place. [2023-11-26 12:01:46,094 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 37 selfloop transitions, 8 changer transitions 0/251 dead transitions. [2023-11-26 12:01:46,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 251 transitions, 682 flow [2023-11-26 12:01:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 718 transitions. [2023-11-26 12:01:46,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.899749373433584 [2023-11-26 12:01:46,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 718 transitions. [2023-11-26 12:01:46,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 718 transitions. [2023-11-26 12:01:46,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:46,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 718 transitions. [2023-11-26 12:01:46,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 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) [2023-11-26 12:01:46,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:46,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:46,104 INFO L175 Difference]: Start difference. First operand has 232 places, 235 transitions, 536 flow. Second operand 3 states and 718 transitions. [2023-11-26 12:01:46,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 251 transitions, 682 flow [2023-11-26 12:01:46,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 251 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:46,112 INFO L231 Difference]: Finished difference. Result has 233 places, 239 transitions, 562 flow [2023-11-26 12:01:46,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=562, PETRI_PLACES=233, PETRI_TRANSITIONS=239} [2023-11-26 12:01:46,114 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -20 predicate places. [2023-11-26 12:01:46,114 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 239 transitions, 562 flow [2023-11-26 12:01:46,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2023-11-26 12:01:46,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:46,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:46,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:01:46,115 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:46,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash 358028495, now seen corresponding path program 1 times [2023-11-26 12:01:46,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:46,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766885731] [2023-11-26 12:01:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:46,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:46,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:46,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766885731] [2023-11-26 12:01:46,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766885731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:46,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:46,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:46,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569042021] [2023-11-26 12:01:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:46,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:46,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:46,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:46,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 266 [2023-11-26 12:01:46,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 239 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2023-11-26 12:01:46,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:46,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 266 [2023-11-26 12:01:46,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:47,384 INFO L124 PetriNetUnfolderBase]: 1140/5178 cut-off events. [2023-11-26 12:01:47,384 INFO L125 PetriNetUnfolderBase]: For 734/810 co-relation queries the response was YES. [2023-11-26 12:01:47,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7830 conditions, 5178 events. 1140/5178 cut-off events. For 734/810 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 41293 event pairs, 990 based on Foata normal form. 0/4551 useless extension candidates. Maximal degree in co-relation 3509. Up to 2049 conditions per place. [2023-11-26 12:01:47,479 INFO L140 encePairwiseOnDemand]: 263/266 looper letters, 43 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2023-11-26 12:01:47,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 242 transitions, 658 flow [2023-11-26 12:01:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-11-26 12:01:47,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8471177944862155 [2023-11-26 12:01:47,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-11-26 12:01:47,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-11-26 12:01:47,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:47,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-11-26 12:01:47,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2023-11-26 12:01:47,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:47,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:47,490 INFO L175 Difference]: Start difference. First operand has 233 places, 239 transitions, 562 flow. Second operand 3 states and 676 transitions. [2023-11-26 12:01:47,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 242 transitions, 658 flow [2023-11-26 12:01:47,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:01:47,499 INFO L231 Difference]: Finished difference. Result has 233 places, 238 transitions, 556 flow [2023-11-26 12:01:47,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=556, PETRI_PLACES=233, PETRI_TRANSITIONS=238} [2023-11-26 12:01:47,501 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -20 predicate places. [2023-11-26 12:01:47,501 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 238 transitions, 556 flow [2023-11-26 12:01:47,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2023-11-26 12:01:47,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:47,502 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:47,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:01:47,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:47,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:47,503 INFO L85 PathProgramCache]: Analyzing trace with hash -503768973, now seen corresponding path program 1 times [2023-11-26 12:01:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:47,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410924919] [2023-11-26 12:01:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:47,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:47,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:47,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410924919] [2023-11-26 12:01:47,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410924919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:47,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993252008] [2023-11-26 12:01:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:47,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:47,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:47,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:01:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:47,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:01:47,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:01:47,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:47,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993252008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:47,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:47,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:01:47,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760086089] [2023-11-26 12:01:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:47,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 266 [2023-11-26 12:01:47,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 238 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2023-11-26 12:01:47,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:47,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 266 [2023-11-26 12:01:47,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:49,010 INFO L124 PetriNetUnfolderBase]: 1140/5124 cut-off events. [2023-11-26 12:01:49,011 INFO L125 PetriNetUnfolderBase]: For 743/819 co-relation queries the response was YES. [2023-11-26 12:01:49,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 5124 events. 1140/5124 cut-off events. For 743/819 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 41020 event pairs, 990 based on Foata normal form. 0/4498 useless extension candidates. Maximal degree in co-relation 6026. Up to 2049 conditions per place. [2023-11-26 12:01:49,092 INFO L140 encePairwiseOnDemand]: 263/266 looper letters, 43 selfloop transitions, 2 changer transitions 0/241 dead transitions. [2023-11-26 12:01:49,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 241 transitions, 652 flow [2023-11-26 12:01:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-11-26 12:01:49,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8471177944862155 [2023-11-26 12:01:49,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-11-26 12:01:49,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-11-26 12:01:49,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:49,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-11-26 12:01:49,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2023-11-26 12:01:49,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:49,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:49,103 INFO L175 Difference]: Start difference. First operand has 233 places, 238 transitions, 556 flow. Second operand 3 states and 676 transitions. [2023-11-26 12:01:49,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 241 transitions, 652 flow [2023-11-26 12:01:49,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 241 transitions, 648 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:49,115 INFO L231 Difference]: Finished difference. Result has 232 places, 237 transitions, 554 flow [2023-11-26 12:01:49,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=554, PETRI_PLACES=232, PETRI_TRANSITIONS=237} [2023-11-26 12:01:49,117 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -21 predicate places. [2023-11-26 12:01:49,117 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 237 transitions, 554 flow [2023-11-26 12:01:49,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 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) [2023-11-26 12:01:49,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:49,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:49,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:49,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:49,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:49,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash 740618588, now seen corresponding path program 1 times [2023-11-26 12:01:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361342229] [2023-11-26 12:01:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:49,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:49,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361342229] [2023-11-26 12:01:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361342229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:49,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308155909] [2023-11-26 12:01:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:49,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:49,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:49,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:49,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:01:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:49,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 12:01:49,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 12:01:49,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:01:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308155909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:01:49,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 12:01:49,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006095399] [2023-11-26 12:01:49,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:49,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:49,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:01:49,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 266 [2023-11-26 12:01:49,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 237 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2023-11-26 12:01:49,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:49,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 266 [2023-11-26 12:01:49,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:56,265 INFO L124 PetriNetUnfolderBase]: 6387/40769 cut-off events. [2023-11-26 12:01:56,266 INFO L125 PetriNetUnfolderBase]: For 11820/88579 co-relation queries the response was YES. [2023-11-26 12:01:56,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53706 conditions, 40769 events. 6387/40769 cut-off events. For 11820/88579 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 583438 event pairs, 1961 based on Foata normal form. 69/34588 useless extension candidates. Maximal degree in co-relation 45859. Up to 4468 conditions per place. [2023-11-26 12:01:56,749 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 39 selfloop transitions, 10 changer transitions 0/258 dead transitions. [2023-11-26 12:01:56,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 258 transitions, 723 flow [2023-11-26 12:01:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:01:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:01:56,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 725 transitions. [2023-11-26 12:01:56,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9085213032581454 [2023-11-26 12:01:56,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 725 transitions. [2023-11-26 12:01:56,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 725 transitions. [2023-11-26 12:01:56,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:56,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 725 transitions. [2023-11-26 12:01:56,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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) [2023-11-26 12:01:56,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:56,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-11-26 12:01:56,761 INFO L175 Difference]: Start difference. First operand has 232 places, 237 transitions, 554 flow. Second operand 3 states and 725 transitions. [2023-11-26 12:01:56,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 258 transitions, 723 flow [2023-11-26 12:01:56,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 258 transitions, 719 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:01:56,811 INFO L231 Difference]: Finished difference. Result has 234 places, 247 transitions, 638 flow [2023-11-26 12:01:56,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=234, PETRI_TRANSITIONS=247} [2023-11-26 12:01:56,813 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -19 predicate places. [2023-11-26 12:01:56,813 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 247 transitions, 638 flow [2023-11-26 12:01:56,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2023-11-26 12:01:56,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:56,814 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:56,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:57,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:57,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:57,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:57,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1230099206, now seen corresponding path program 1 times [2023-11-26 12:01:57,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:57,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570378482] [2023-11-26 12:01:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:57,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:57,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:57,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570378482] [2023-11-26 12:01:57,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570378482] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:01:57,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682295719] [2023-11-26 12:01:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:57,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:57,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:01:57,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:01:57,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 12:01:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:57,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 12:01:57,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:01:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:57,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:01:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:57,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682295719] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:01:57,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:01:57,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 12:01:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587777233] [2023-11-26 12:01:57,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:01:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 12:01:57,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 12:01:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:01:57,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 266 [2023-11-26 12:01:57,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 247 transitions, 638 flow. Second operand has 10 states, 10 states have (on average 217.5) internal successors, (2175), 10 states have internal predecessors, (2175), 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) [2023-11-26 12:01:57,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:57,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 266 [2023-11-26 12:01:57,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:01:57,883 INFO L124 PetriNetUnfolderBase]: 62/320 cut-off events. [2023-11-26 12:01:57,883 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-26 12:01:57,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 320 events. 62/320 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1134 event pairs, 0 based on Foata normal form. 12/324 useless extension candidates. Maximal degree in co-relation 505. Up to 42 conditions per place. [2023-11-26 12:01:57,885 INFO L140 encePairwiseOnDemand]: 261/266 looper letters, 29 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-11-26 12:01:57,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 76 transitions, 262 flow [2023-11-26 12:01:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 12:01:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 12:01:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1973 transitions. [2023-11-26 12:01:57,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8241436925647452 [2023-11-26 12:01:57,892 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1973 transitions. [2023-11-26 12:01:57,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1973 transitions. [2023-11-26 12:01:57,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:01:57,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1973 transitions. [2023-11-26 12:01:57,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 219.22222222222223) internal successors, (1973), 9 states have internal predecessors, (1973), 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) [2023-11-26 12:01:57,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 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) [2023-11-26 12:01:57,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 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) [2023-11-26 12:01:57,907 INFO L175 Difference]: Start difference. First operand has 234 places, 247 transitions, 638 flow. Second operand 9 states and 1973 transitions. [2023-11-26 12:01:57,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 76 transitions, 262 flow [2023-11-26 12:01:57,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:01:57,909 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 146 flow [2023-11-26 12:01:57,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2023-11-26 12:01:57,910 INFO L281 CegarLoopForPetriNet]: 253 programPoint places, -181 predicate places. [2023-11-26 12:01:57,911 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 146 flow [2023-11-26 12:01:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 217.5) internal successors, (2175), 10 states have internal predecessors, (2175), 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) [2023-11-26 12:01:57,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:57,914 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:57,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 12:01:58,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0387f02d-c793-4151-9ee5-5ad2637c0a08/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:01:58,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-11-26 12:01:58,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash -527945915, now seen corresponding path program 1 times [2023-11-26 12:01:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52369251] [2023-11-26 12:01:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:58,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:01:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:01:58,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:01:58,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 12:01:58,167 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2023-11-26 12:01:58,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2023-11-26 12:01:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2023-11-26 12:01:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2023-11-26 12:01:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2023-11-26 12:01:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2023-11-26 12:01:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2023-11-26 12:01:58,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2023-11-26 12:01:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2023-11-26 12:01:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2023-11-26 12:01:58,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2023-11-26 12:01:58,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2023-11-26 12:01:58,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2023-11-26 12:01:58,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2023-11-26 12:01:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2023-11-26 12:01:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2023-11-26 12:01:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2023-11-26 12:01:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2023-11-26 12:01:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2023-11-26 12:01:58,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2023-11-26 12:01:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2023-11-26 12:01:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2023-11-26 12:01:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2023-11-26 12:01:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2023-11-26 12:01:58,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2023-11-26 12:01:58,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2023-11-26 12:01:58,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2023-11-26 12:01:58,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2023-11-26 12:01:58,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2023-11-26 12:01:58,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 42 remaining) [2023-11-26 12:01:58,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2023-11-26 12:01:58,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2023-11-26 12:01:58,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2023-11-26 12:01:58,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2023-11-26 12:01:58,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2023-11-26 12:01:58,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2023-11-26 12:01:58,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2023-11-26 12:01:58,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2023-11-26 12:01:58,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2023-11-26 12:01:58,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2023-11-26 12:01:58,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2023-11-26 12:01:58,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2023-11-26 12:01:58,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:01:58,176 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:58,177 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-26 12:01:58,177 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-26 12:01:58,226 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-11-26 12:01:58,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 714 flow [2023-11-26 12:01:59,550 INFO L124 PetriNetUnfolderBase]: 544/5962 cut-off events. [2023-11-26 12:01:59,550 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-11-26 12:01:59,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6398 conditions, 5962 events. 544/5962 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 48354 event pairs, 64 based on Foata normal form. 0/4761 useless extension candidates. Maximal degree in co-relation 3403. Up to 192 conditions per place. [2023-11-26 12:01:59,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 714 flow [2023-11-26 12:01:59,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 321 transitions, 714 flow [2023-11-26 12:01:59,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:01:59,665 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=LoopHeads, 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;@334220fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:01:59,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-26 12:01:59,757 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:01:59,757 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-26 12:01:59,757 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 12:01:59,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:01:59,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:01:59,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-26 12:01:59,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:01:59,758 INFO L85 PathProgramCache]: Analyzing trace with hash 333663357, now seen corresponding path program 1 times [2023-11-26 12:01:59,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:01:59,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146371268] [2023-11-26 12:01:59,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:01:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:01:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:01:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:01:59,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:01:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146371268] [2023-11-26 12:01:59,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146371268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:01:59,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:01:59,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:01:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458199597] [2023-11-26 12:01:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:01:59,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:01:59,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:01:59,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:01:59,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:01:59,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 321 [2023-11-26 12:01:59,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 321 transitions, 714 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 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) [2023-11-26 12:01:59,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:01:59,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 321 [2023-11-26 12:01:59,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:08,075 INFO L124 PetriNetUnfolderBase]: 12246/31283 cut-off events. [2023-11-26 12:02:08,075 INFO L125 PetriNetUnfolderBase]: For 8383/10783 co-relation queries the response was YES. [2023-11-26 12:02:08,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53182 conditions, 31283 events. 12246/31283 cut-off events. For 8383/10783 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 309427 event pairs, 10886 based on Foata normal form. 19719/46593 useless extension candidates. Maximal degree in co-relation 38926. Up to 19179 conditions per place. [2023-11-26 12:02:08,894 INFO L140 encePairwiseOnDemand]: 302/321 looper letters, 47 selfloop transitions, 2 changer transitions 0/295 dead transitions. [2023-11-26 12:02:08,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 295 transitions, 760 flow [2023-11-26 12:02:08,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-11-26 12:02:08,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8535825545171339 [2023-11-26 12:02:08,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-11-26 12:02:08,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-11-26 12:02:08,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:08,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-11-26 12:02:08,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2023-11-26 12:02:08,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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) [2023-11-26 12:02:08,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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) [2023-11-26 12:02:08,906 INFO L175 Difference]: Start difference. First operand has 303 places, 321 transitions, 714 flow. Second operand 3 states and 822 transitions. [2023-11-26 12:02:08,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 295 transitions, 760 flow [2023-11-26 12:02:09,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 295 transitions, 760 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:02:09,034 INFO L231 Difference]: Finished difference. Result has 289 places, 295 transitions, 666 flow [2023-11-26 12:02:09,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=666, PETRI_PLACES=289, PETRI_TRANSITIONS=295} [2023-11-26 12:02:09,036 INFO L281 CegarLoopForPetriNet]: 303 programPoint places, -14 predicate places. [2023-11-26 12:02:09,036 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 295 transitions, 666 flow [2023-11-26 12:02:09,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 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) [2023-11-26 12:02:09,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:09,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:09,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 12:02:09,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-26 12:02:09,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:09,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1611749649, now seen corresponding path program 1 times [2023-11-26 12:02:09,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:09,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796291373] [2023-11-26 12:02:09,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:09,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796291373] [2023-11-26 12:02:09,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796291373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:09,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718854179] [2023-11-26 12:02:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:09,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:09,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:09,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 321 [2023-11-26 12:02:09,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 295 transitions, 666 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-11-26 12:02:09,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:09,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 321 [2023-11-26 12:02:09,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:02:22,754 INFO L124 PetriNetUnfolderBase]: 17428/52426 cut-off events. [2023-11-26 12:02:22,754 INFO L125 PetriNetUnfolderBase]: For 7788/8160 co-relation queries the response was YES. [2023-11-26 12:02:23,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81993 conditions, 52426 events. 17428/52426 cut-off events. For 7788/8160 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 564319 event pairs, 12762 based on Foata normal form. 0/48110 useless extension candidates. Maximal degree in co-relation 81960. Up to 22195 conditions per place. [2023-11-26 12:02:24,303 INFO L140 encePairwiseOnDemand]: 298/321 looper letters, 51 selfloop transitions, 11 changer transitions 0/289 dead transitions. [2023-11-26 12:02:24,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 289 transitions, 778 flow [2023-11-26 12:02:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 12:02:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2023-11-26 12:02:24,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8058151609553479 [2023-11-26 12:02:24,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2023-11-26 12:02:24,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2023-11-26 12:02:24,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:02:24,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2023-11-26 12:02:24,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:24,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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) [2023-11-26 12:02:24,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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) [2023-11-26 12:02:24,317 INFO L175 Difference]: Start difference. First operand has 289 places, 295 transitions, 666 flow. Second operand 3 states and 776 transitions. [2023-11-26 12:02:24,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 289 transitions, 778 flow [2023-11-26 12:02:24,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 289 transitions, 774 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:02:24,335 INFO L231 Difference]: Finished difference. Result has 277 places, 283 transitions, 660 flow [2023-11-26 12:02:24,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=660, PETRI_PLACES=277, PETRI_TRANSITIONS=283} [2023-11-26 12:02:24,337 INFO L281 CegarLoopForPetriNet]: 303 programPoint places, -26 predicate places. [2023-11-26 12:02:24,337 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 283 transitions, 660 flow [2023-11-26 12:02:24,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-11-26 12:02:24,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:02:24,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:24,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:02:24,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-11-26 12:02:24,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash 920941943, now seen corresponding path program 1 times [2023-11-26 12:02:24,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:24,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871022363] [2023-11-26 12:02:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:24,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:24,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871022363] [2023-11-26 12:02:24,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871022363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:24,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:24,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286130004] [2023-11-26 12:02:24,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:24,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:24,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 321 [2023-11-26 12:02:24,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 283 transitions, 660 flow. Second operand has 3 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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) [2023-11-26 12:02:24,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:02:24,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 321 [2023-11-26 12:02:24,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand